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grayton downing

Measuring Consciousness | The Scientist Magazine® - 0 views

  • General anesthesia has transformed surgery from a ghastly ordeal to a procedure in which the patient feels no pain.
  • “integrated-information theory,” which holds that consciousness relies on communication between different brain areas, and fades as that communication breaks down.
  • neural markers of consciousness—or more precisely, the loss of consciousness—a group led by Patrick Purdon
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  • The purpose of the surgery was to remove electrodes that had previously been implanted in the patients’ brains to monitor seizures. But before they were taken out, the electrodes enabled the researchers to study the activity of individual neurons in the cortex, in addition to large-scale brain activity from EEG recordings.
  • importance of communication between discrete groups of neurons, both within the cortex and across brain regions, is analogous to a band playing music, said George Mashour, a neuroscientist and anesthesiologist at the University of Michigan, Ann Arbor. “You need musical information to come together either in time or space to really make sense,”
  • “Consciousness and cognitive activity may be similar. If different areas of the brain aren’t in synch or if a critical area that normally integrates cognitive activity isn’t functioning, you could be rendered unconscious.”
  • , Purdon and colleagues were able to discern a more detailed neural signature of loss of unconsciousness, this time by using EEG alone. Monitoring brain activity in healthy patients for 2 hours as they underwent propofol-induced anesthesia, they observed that as responsiveness fades, high-frequency brain waves (12–35 hertz) rippling across the cortex and the thalamus were replaced by two different brain waves superimposed on top on one another: a low-frequency (<1 hertz) wave and an alpha frequency (8–12 hertz) wave. “These two waves pretty much come at loss of consciousness,”
  • “We’ve started to teach our anesthesiologists how to read this signature on the EEG”
  • Anesthesia is not the only state in which consciousness is lost, of course
  • o measure the gradual breakdown of connectivity between neural networks during natural REM sleep and anesthesia, as well as in brain-injured, unresponsive patients. Using an electromagnetic coil to activate neurons in a small patch of the human cortex, then recording EEG output to track the propagation of those signals to other neuronal groups, the researchers can measure the connectivity between collections of neurons in the cortex and other brain regions.
  • minimally conscious patients, the magnetically stimulated signals propagated fairly far and wide, occasionally reaching distant cortical areas, much like activations seen in locked-in but conscious patients. In patients in a persistent vegetative state, on the other hand, propagation was severely limited—a breakdown of connectivity similar to that observed in previous tests of anesthetized patients. What’s more, in three vegetative patients that later recovered consciousness, the test picked up signs of increased connectivity before clinical signs of improvement became evident.
  • “I think understanding consciousness itself is going to help us find successful [measurement] approaches that are universally applicable,” said Pearce.
katedriscoll

Common Knowledge | Poorvu Center for Teaching and Learning - 0 views

  • If you are familiar with the notion of “common knowledge” from earlier writing experiences, you may have noticed that its definition is easy to state, but can be hard to apply in a particular case. The “common” way to talk about common knowledge is to say that it is knowledge that most educated people know or can find out easily in an encyclopedia or dictionary. Thus, you might not know the date of the most recent meeting of the Federal Reserve, but you can find it out quite easily. Further, the term “common knowledge” carries the sense of “communal” knowledge—it is community information that no particular individual can fairly claim to own. One sign that something is community knowledge is that it is stated in 5 or more sources. So, if it’s known to educated people, or can be easily looked up, or appears in many sources, it is likely to be “common knowledge” and so does not need to be cited.
  • Because the notion of “common knowledge” is ambiguous and depends on context, you should always check with a professor or TF if you have any doubts. Some reference books will say “if in doubt, cite it,” but you don’t want to over-cite, so check with your readers to try to fix the line between common and specialized knowledge.
  • This advice about “common knowledge” is true for all disciplines—think about your audience and the course attitude, recognize when you’re writing as an expert, and always check with professors if you’re in doubt. The sciences, however, have a somewhat different notion of “common knowledge,” coming partly out of research practice and partly out of more collaborative work methods. Ideas, findings, and methodologies that are new knowledge (and therefore specialized rather than common knowledge) become old knowledge more quickly in the sciences. The answer, again, is to consider the messages you’re getting from the course about what concepts are common or foundational, and to check in with professors or TFs.
krystalxu

The Power Of Communication: Psychology Of Words And Language Revealed | Science 2.0 - 0 views

  • “I am much more interested in how you feel than how you think. I can change how you think, but how you feel is something deeper and stronger, and it's something that's inside you. How you think is on the outside, how you feel is on the inside, so that's what I need to understand.”
  • Central processing is triggered by certain queues, such as involvement and immediacy.
  • "Someone like me comes around and realizes that it's not an estate tax, it's a death tax, because you're taxed at death. And suddenly something that isn't viable achieves the support of 75 percent of the American people. It's the same tax, but nobody really knows what an estate is. But they certainly know what it means to be taxed when you die."
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  • Instead of referring to global warmer, the concept is dubbed "climate change" which lessens fears associated with global warming.
  • To better understand the way we react to information, research on communication is vital to understanding our reactions, emotions and how they build our behaviors and actions.
clairemann

'At 47, I discovered I am autistic - suddenly so many things made sense' | Life and sty... - 0 views

  • I knew I was different and I had always been told I was “too sensitive”. But I don’t fit the dated Rain Man stereotype. I’m a CEO, I’m married, I have two children. Autism is often a hidden disability.
  • I always operated with some level of confusion.
  • My mind is always going a million miles an hour and I don’t really have an off switch. I need to finish what I start at any cost. Now I understand that is part of being autistic.
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  • Einstein, Mozart, Michelangelo, Steve Jobs, Bill Gates – all these overachievers are widely believed to be, or have been, on the spectrum.
  • I used recreational drugs to smooth me through the challenges of social communication.
  • With every interaction, verbal or written, I go through a mental checklist: is my response appropriate? Is it relevant? Is this something only I am going to find interesting? Is my tone right? Trying to follow social rules and adapt to an allistic [non-autistic] world is exhausting. No one sees what is going on inside my head.
  • Misunderstandings in communication can blow up quite quickly.
  • I burnt out in my late 20s.
  • My greatest fear has been something I’ve always referred to as “the big alone”. Even when I’ve been in loving relationships, as I am now, there has been a terrible aloneness in not understanding why I am not like other people.
  • I was able to look back at situations and misunderstandings and understand what had happened. I’d been told my communication could be “off” sometimes – a bit intense, a bit abrupt.
  • Autistic children spend a lot of time “masking”, imitating so-called “normal” behaviour. They need to be able to experience their authentic selves.
  • Over the past five or 10 years, the concept of neurodiversity – the idea that these differences in our brains should be celebrated – has become better known. We deserve equality, respect and full social inclusion.
  • We need to start making space for neurodivergent people at school, at work, in life generally. Autistic people bring a whole new set of skills with them.
Javier E

Chief Rabbi: atheism has failed. Only religion can defeat the new barbarians ... - 0 views

  • reading the new atheists.
  • Where is there the remotest sense that they have grappled with the real issues, which have nothing to do with science and the literal meaning of scripture and everything to do with the meaningfulness or otherwise of human life, the existence or non-existence of an objective moral order, the truth or falsity of the idea of human freedom, and the ability or inability of society to survive without the rituals, narratives and shared practices that create and sustain the social bond?
  • religion has social, cultural and political consequences, and you cannot expect the foundations of western civilisation to crumble and leave the rest of the building intact. That is what the greatest of all atheists, Nietzsche, understood
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  • The history of Europe since the 18th century has been the story of successive attempts to find alternatives to God as an object of worship, among them the nation state, race and the Communist Manifesto. After this cost humanity two world wars, a Cold War and a hundred million lives, we have turned to more pacific forms of idolatry, among them the market, the liberal democratic state and the consumer society,
  • This is what a society built on materialism, individualism and moral relativism looks like. It maximises personal freedom but at a cost.
  • This freedom, energising and exciting as it is, is also profoundly disintegrative, making it very difficult for individuals to find any stable communal support, very difficult for any community to count on the responsible participation of its individual members. It opens solitary men and women to the impact of a lowest common denominator, commercial culture.’
  • In one respect the new atheists are right. The threat to western freedom in the 21st century is not from fascism or communism but from a religious fundamentalism combining hatred of the other, the pursuit of power and contempt for human rights.
  • But the idea that this can be defeated by individualism and relativism is naive almost beyond belief. Humanity has been here before.
  • The barbarians win. They always do.
  • The new barbarians are the fundamentalists who seek to impose a single truth on a plural world. Though many of them claim to be religious, they are actually devotees of the will to power. Defeating them will take the strongest possible defence of freedom, and strong societies are always moral societies
  • That does not mean that they need be religious. It is just that, in the words of historian Will Durant, ‘There is no significant example in history, before our time, of a society successfully maintaining moral life without the aid of religion.’
  • I have not yet found a secular ethic capable of sustaining in the long run a society of strong communities and families on the one hand, altruism, virtue, self-restraint, honour, obligation and trust on the other
  • A century after a civilisation loses its soul it loses its freedom also. That should concern all of us, believers and non-believers alike.
sissij

Emotions | Being Human - 2 views

  • They come and go, changing like the weather in April: sunny, rainy, stormy, mild or thunderous. Usually we find a reason why we’re happy or sad, embarrassed, or proud.
  • Although most people feel that emotions are one of the most personal, intimate, private expressions, an evolutionary understanding implies that they are, instead, impersonal mechanisms that we all share.
  • The basic emotions—fear, sorrow, disgust, anger, and joy—evolved as mechanisms to instigate behaviors appropriate to the environments of our distant ancestors.
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  • Guilt signals that we’ve violated morals we believe in; embarrassment shows that we’ve made a fool out of ourselves
  • We evolved lo earn from emotions and they shape our behavior continually. Fundamentally we try to avoid unpleasant emotions and experience pleasant ones because they indicate situations that are either beneficial or harmful for us.
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    I found this article very interesting because it shows me another aspect of emotion, as a very impersonal shared knowledge that's developed by the logic of evolution. I think there are some similarities between emotions and languages as they both shape our behavior continually, and also emotion can be used a tool of communication in a way just like language. Actually, I think emotions serve as the very primitive form of communication in the early phase of human. --Sissi (11/26/2016)
Javier E

The Rediscovery of Character - NYTimes.com - 0 views

  • broken windows was only a small piece of what Wilson contributed, and he did not consider it the center of his work. The best way to understand the core Wilson is by borrowing the title of one of his essays: “The Rediscovery of Character.”
  • When Wilson began looking at social policy, at the University of Redlands, the University of Chicago and Harvard, most people did not pay much attention to character. The Marxists looked at material forces. Darwinians at the time treated people as isolated products of competition. Policy makers of right and left thought about how to rearrange economic incentives. “It is as if it were a mark of sophistication for us to shun the language of morality in discussing the problems of mankind,” he once recalled.
  • during the 1960s and ’70s, he noticed that the nation’s problems could not be understood by looking at incentives
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  • “At root,” Wilson wrote in 1985 in The Public Interest, “in almost every area of important concern, we are seeking to induce persons to act virtuously, whether as schoolchildren, applicants for public assistance, would-be lawbreakers or voters and public officials.”
  • When Wilson wrote about character and virtue, he didn’t mean anything high flown or theocratic. It was just the basics, befitting a man who grew up in the middle-class suburbs of Los Angeles in the 1940s: Behave in a balanced way. Think about the long-term consequences of your actions. Cooperate. Be decent.
  • Wilson argued that American communities responded to the stresses of industrialization by fortifying self-control.
  • It was habituated by practicing good manners, by being dependable, punctual and responsible day by day.
  • Wilson set out to learn how groups created a good order, why that order sometimes frayed.
  • In “The Moral Sense,” he brilliantly investigated the virtuous sentiments we are born with and how they are cultivated by habit. Wilson’s broken windows theory was promoted in an essay with George Kelling called “Character and Community.” Wilson and Kelling didn’t think of crime primarily as an individual choice. They saw it as something that emerged from the social psychology of a community. When neighborhoods feel disorganized and scary, crime increases.
  • he emphasized that character was formed in groups. As he wrote in “The Moral Sense,” his 1993 masterpiece, “Order exists because a system of beliefs and sentiments held by members of a society sets limits to what those members can do.”
  • But America responded to the stresses of the information economy by reducing the communal buttresses to self-control, with unfortunate results.
  • Wilson was not a philosopher. He was a social scientist. He just understood that people are moral judgers and moral actors, and he reintegrated the vocabulary of character into discussions of everyday life.
carolinewren

How Media Bias Is Killing Black America - The Root - 0 views

  • leads to both the erasure and criminalization of marginalized communities, has had dire consequences for both the psyches and lived experiences of black people in the United States since at least the 18th century,
  • “This is the press, an irresponsible press,” he said. “It will make the criminal look like he’s the victim and make the victim look like he’s the criminal. If you aren’t careful, the newspapers will have you hating the people who are being oppressed and loving the people who are doing the oppressing.”
  • Many studies have tackled implicit racial bias in law enforcement, health care and the legal field. In recent years, the phrase has become a buzzword used to broadly frame bigotry and racism as something so entrenched that some people aren’t aware that they subconsciously harbor racist feelings, associating black skin with negative behavior
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  • their “conditioning has been conditioned,” and marginalized groups are often left to pick up the pieces in the wake of brutality and/or neglect by those in positions of power, trust and influence.
  • tackles media bias (pdf) and how it indiscriminately pathologizes communities of color for mass consumption.
  • “Implicit bias impacts the way black communities are treated across practically all sectors of life in America, from courtrooms to doctors’ offices,
  • “The media is no different, whether it be the use of pejorative terms like ‘thug’ and ‘animal’ to describe protesters in Ferguson and Baltimore, or the widespread overreporting of crime stories involving black suspects in New York City.”
  • Media bias not only negatively impacts black America’s relationship with law enforcement and the judicial system (pdf) but also extends to how African Americans are perceived in society at large.
  • “Television newsrooms are nearly 80 percent white, according to the Radio and Television News Directors Association, while radio newsrooms are 92 percent white,”
  • “The percentage of minority journalists has remained between 12 and 14 percent for more than a decade.”
  • This lays the groundwork for an intrinsically racist media structure that, according to The Atlantic’s Riva Gold, means “news organizations are losing their ability to empower, represent, and—especially in cases where language ability is crucial—even to report on minority populations in their communities.”
caelengrubb

Why it's time to stop worrying about the decline of the English language | Language | T... - 0 views

  • Now imagine that something even more fundamental than electricity or money is at risk: a tool we have relied on since the dawn of human history, enabling the very foundations of civilisation to be laid
  • I’m talking about our ability to communicate – to put our thoughts into words, and to use those words to forge bonds, to deliver vital information, to learn from our mistakes and build on the work done by others.
  • “Their language is deteriorating. They are lowering the bar. Our language is flying off at all tangents, without the anchor of a solid foundation.
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  • Although it is at pains to point out that it does not believe language can be preserved unchanged, it worries that communication is at risk of becoming far less effective. “Some changes would be wholly unacceptable, as they would cause confusion and the language would lose shades of meaning
  • “Without grammar, we lose the agreed-upon standards about what means what. We lose the ability to communicate when respondents are not actually in the same room speaking to one another. Without grammar, we lose the precision required to be effective and purposeful in writing.”
  • At the same time, our laziness and imprecision are leading to unnecessary bloating of the language – “language obesity,”
  • That’s five writers, across a span of 400 years, all moaning about the same erosion of standards. And yet the period also encompasses some of the greatest works of English literature.
  • Since then, the English-speaking world has grown more prosperous, better educated and more efficiently governed, despite an increase in population. Most democratic freedoms have been preserved and intellectual achievement intensified.
  • Linguistic decline is the cultural equivalent of the boy who cried wolf, except the wolf never turns up
  • Our language will always be as flexible and sophisticated as it has been up to now. Those who warn about the deterioration of English haven’t learned about the history of the language, and don’t understand the nature of their own complaints – which are simply statements of preference for the way of doing things they have become used to.
  • But the problem is that writers at that time also felt they were speaking a degraded, faltering tongue
  • Seventy-odd years ago, people knew their grammar and knew how to talk clearly. And, if we follow the logic, they must also have been better at organising, finding things out and making things work.
  • Hand-wringing about standards is not restricted to English. The fate of every language in the world has been lamented by its speakers at some point or another.
  • “For more than 2,000 years, complaints about the decay of respective languages have been documented in literature, but no one has yet been able to name an example of a ‘decayed language’.” He has a point.
  • One common driver of linguistic change is a process called reanalysis.
  • Another form that linguistic change often takes is grammaticalisation: a process in which a common phrase is bleached of its independent meaning and made into a word with a solely grammatical function
  • One instance of this is the verb “to go”, when used for an action in the near future or an intention.
  • Human anatomy makes some changes to language more likely than others. The simple mechanics of moving from a nasal sound (m or n) to a non-nasal one can make a consonant pop up in between
  • The way our brain divides up words also drives change. We split them into phonemes (building blocks of sound that have special perceptual significance) and syllables (groups of phonemes).
  • ound changes can come about as a result of social pressures: certain ways of saying things are seen as having prestige, while others are stigmatised. We gravitate towards the prestigious, and make efforts to avoid saying things in a way that is associated with undesirable qualities – often just below the level of consciousnes
  • The problem arises when deciding what might be good or bad. There are, despite what many people feel, no objective criteria by which to judge what is better or worse in communication
  • Though we are all capable of adaptation, many aspects of the way we use language, including stylistic preferences, have solidified by our 20s. If you are in your 50s, you may identify with many aspects of the way people spoke 30-45 years ago.
  • The irony is, of course, that the pedants are the ones making the mistakes. To people who know how language works, pundits such as Douglas Rushkoff only end up sounding ignorant, having failed to really interrogate their views
krystalxu

The Key to Good Politics? Good Communication | Center on Representative Government - 0 views

  • chief among them is the ability to communicate. Politics — both getting elected and making a meaningful contribution to public life — is largely about interaction with other people.
  • lots of us it's a skill we learn with practice, and it's invaluable to a politician. 
  • More than a few times, I've prepared for a public appearance only to have my speech become irrelevant when some national issue became the only topic people were interested in discussing. 
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  • They prefer dialogue with their elected representative rather than a set speech. 
  • Any public policy debate of consequence will have good points on both sides, and learning to welcome multiple perspectives is vital. 
charlottedonoho

Big Gap between What Scientists Say and Americans Think about Climate Change - Scientif... - 1 views

  • There is good and bad news for climate scientists. The good news: Most Americans (79 percent) say that science and scientists are invaluable
  • a significant number of Americans do not use science to inform their views. Instead, they use political orientation and ideology, which are reflected in their level of education, to decide whether humans are driving planetary warming.
  • the vast majority (87 percent) of scientists said that human activity is driving global warming, and yet only half the American public ascribed to that view. And 77 percent of scientists said climate change is a very serious problem. In comparison, only 33 percent of the general public said it was a very serious problem in a 2013 poll.
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  • This could be interpreted as a failure by scientists to better communicate with the public, said Alan Leshner, chief executive officer of AAAS
  • Leshner said scientists should not shy away from polarizing topics in public.
Javier E

How Did Consciousness Evolve? - The Atlantic - 0 views

  • Theories of consciousness come from religion, from philosophy, from cognitive science, but not so much from evolutionary biology. Maybe that’s why so few theories have been able to tackle basic questions such as: What is the adaptive value of consciousness? When did it evolve and what animals have it?
  • The Attention Schema Theory (AST), developed over the past five years, may be able to answer those questions.
  • The theory suggests that consciousness arises as a solution to one of the most fundamental problems facing any nervous system: Too much information constantly flows in to be fully processed. The brain evolved increasingly sophisticated mechanisms for deeply processing a few select signals at the expense of others, and in the AST, consciousness is the ultimate result of that evolutionary sequence
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  • Even before the evolution of a central brain, nervous systems took advantage of a simple computing trick: competition.
  • It coordinates something called overt attention – aiming the satellite dishes of the eyes, ears, and nose toward anything important.
  • Selective enhancement therefore probably evolved sometime between hydras and arthropods—between about 700 and 600 million years ago, close to the beginning of complex, multicellular life
  • The next evolutionary advance was a centralized controller for attention that could coordinate among all senses. In many animals, that central controller is a brain area called the tectum
  • At any moment only a few neurons win that intense competition, their signals rising up above the noise and impacting the animal’s behavior. This process is called selective signal enhancement, and without it, a nervous system can do almost nothing.
  • All vertebrates—fish, reptiles, birds, and mammals—have a tectum. Even lampreys have one, and they appeared so early in evolution that they don’t even have a lower jaw. But as far as anyone knows, the tectum is absent from all invertebrates
  • According to fossil and genetic evidence, vertebrates evolved around 520 million years ago. The tectum and the central control of attention probably evolved around then, during the so-called Cambrian Explosion when vertebrates were tiny wriggling creatures competing with a vast range of invertebrates in the sea.
  • The tectum is a beautiful piece of engineering. To control the head and the eyes efficiently, it constructs something called an internal model, a feature well known to engineers. An internal model is a simulation that keeps track of whatever is being controlled and allows for predictions and planning.
  • The tectum’s internal model is a set of information encoded in the complex pattern of activity of the neurons. That information simulates the current state of the eyes, head, and other major body parts, making predictions about how these body parts will move next and about the consequences of their movement
  • In fish and amphibians, the tectum is the pinnacle of sophistication and the largest part of the brain. A frog has a pretty good simulation of itself.
  • With the evolution of reptiles around 350 to 300 million years ago, a new brain structure began to emerge – the wulst. Birds inherited a wulst from their reptile ancestors. Mammals did too, but our version is usually called the cerebral cortex and has expanded enormously
  • The cortex also takes in sensory signals and coordinates movement, but it has a more flexible repertoire. Depending on context, you might look toward, look away, make a sound, do a dance, or simply store the sensory event in memory in case the information is useful for the future.
  • The most important difference between the cortex and the tectum may be the kind of attention they control. The tectum is the master of overt attention—pointing the sensory apparatus toward anything important. The cortex ups the ante with something called covert attention. You don’t need to look directly at something to covertly attend to it. Even if you’ve turned your back on an object, your cortex can still focus its processing resources on it
  • The cortex needs to control that virtual movement, and therefore like any efficient controller it needs an internal model. Unlike the tectum, which models concrete objects like the eyes and the head, the cortex must model something much more abstract. According to the AST, it does so by constructing an attention schema—a constantly updated set of information that describes what covert attention is doing moment-by-moment and what its consequences are
  • Covert attention isn’t intangible. It has a physical basis, but that physical basis lies in the microscopic details of neurons, synapses, and signals. The brain has no need to know those details. The attention schema is therefore strategically vague. It depicts covert attention in a physically incoherent way, as a non-physical essence
  • this, according to the theory, is the origin of consciousness. We say we have consciousness because deep in the brain, something quite primitive is computing that semi-magical self-description.
  • I’m reminded of Teddy Roosevelt’s famous quote, “Do what you can with what you have where you are.” Evolution is the master of that kind of opportunism. Fins become feet. Gill arches become jaws. And self-models become models of others. In the AST, the attention schema first evolved as a model of one’s own covert attention. But once the basic mechanism was in place, according to the theory, it was further adapted to model the attentional states of others, to allow for social prediction. Not only could the brain attribute consciousness to itself, it began to attribute consciousness to others.
  • In the AST’s evolutionary story, social cognition begins to ramp up shortly after the reptilian wulst evolved. Crocodiles may not be the most socially complex creatures on earth, but they live in large communities, care for their young, and can make loyal if somewhat dangerous pets.
  • If AST is correct, 300 million years of reptilian, avian, and mammalian evolution have allowed the self-model and the social model to evolve in tandem, each influencing the other. We understand other people by projecting ourselves onto them. But we also understand ourselves by considering the way other people might see us.
  • t the cortical networks in the human brain that allow us to attribute consciousness to others overlap extensively with the networks that construct our own sense of consciousness.
  • Language is perhaps the most recent big leap in the evolution of consciousness. Nobody knows when human language first evolved. Certainly we had it by 70 thousand years ago when people began to disperse around the world, since all dispersed groups have a sophisticated language. The relationship between language and consciousness is often debated, but we can be sure of at least this much: once we developed language, we could talk about consciousness and compare notes
  • Maybe partly because of language and culture, humans have a hair-trigger tendency to attribute consciousness to everything around us. We attribute consciousness to characters in a story, puppets and dolls, storms, rivers, empty spaces, ghosts and gods. Justin Barrett called it the Hyperactive Agency Detection Device, or HADD
  • the HADD goes way beyond detecting predators. It’s a consequence of our hyper-social nature. Evolution turned up the amplitude on our tendency to model others and now we’re supremely attuned to each other’s mind states. It gives us our adaptive edge. The inevitable side effect is the detection of false positives, or ghosts.
kushnerha

New Ways Into the Brain's 'Music Room' - The New York Times - 5 views

  • Every culture ever studied has been found to make music, and among the oldest artistic objects known are slender flutes carved from mammoth bone some 43,000 years ago — 24,000 years before the cave paintings of Lascaux.
  • And though the survival value that music held for our ancestors may not be as immediately obvious as the power to recognize words, Dr. Rauschecker added, “music works as a group cohesive. Music-making with other people in your tribe is a very ancient, human thing to do.”
  • devised a radical new approach to brain imaging that reveals what past studies had missed. By mathematically analyzing scans of the auditory cortex and grouping clusters of brain cells with similar activation patterns, the scientists have identified neural pathways that react almost exclusively to the sound of music — any music. It may be Bach, bluegrass, hip-hop, big band, sitar or Julie Andrews. A listener may relish the sampled genre or revile it. No matter. When a musical passage is played, a distinct set of neurons tucked inside a furrow of a listener’s auditory cortex will fire in response.Other sounds, by contrast — a dog barking, a car skidding, a toilet flushing — leave the musical circuits unmoved.
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  • “Why do we have music?” Dr. Kanwisher said in an interview. “Why do we enjoy it so much and want to dance when we hear it? How early in development can we see this sensitivity to music, and is it tunable with experience? These are the really cool first-order questions we can begin to address.”
  • Dr. McDermott said the new method could be used to computationally dissect any scans from a functional magnetic resonance imaging device, or F.M.R.I. — the trendy workhorse of contemporary neuroscience — and so may end up divulging other hidden gems of cortical specialization. As proof of principle, the researchers showed that their analytical protocol had detected a second neural pathway in the brain for which scientists already had evidence — this one tuned to the sounds of human speech.
  • Importantly, the M.I.T. team demonstrated that the speech and music circuits are in different parts of the brain’s sprawling auditory cortex, where all sound signals are interpreted, and that each is largely deaf to the other’s sonic cues, although there is some overlap when it comes to responding to songs with lyrics.
  • In fact, Dr. Rauschecker said, music sensitivity may be more fundamental to the human brain than is speech perception. “There are theories that music is older than speech or language,” he said. “Some even argue that speech evolved from music.”
  • , many researchers had long assumed that the human brain must be equipped with some sort of music room, a distinctive piece of cortical architecture dedicated to detecting and interpreting the dulcet signals of song. Yet for years, scientists failed to find any clear evidence of a music-specific domain through conventional brain-scanning technology
  • when previous neuroscientists failed to find any anatomically distinct music center in the brain, they came up with any number of rationales to explain the results.“The story was, oh, what’s special about music perception is how it recruits areas from all over the brain, how it draws on the motor system, speech circuitry, social understanding, and brings it all together,” she said. Some researchers dismissed music as “auditory cheesecake,” a pastime that co-opted other essential communicative urges. “This paper says, no, when you peer below the cruder level seen with some methodologies, you find very specific circuitry that responds to music over speech.”
  • The researchers wondered if the auditory system might be similarly organized to make sense of the soundscape through a categorical screen. If so, what would the salient categories be? What are the aural equivalents of a human face or a human leg — sounds or sound elements so essential the brain assigns a bit of gray matter to the task of detecting them?
  • Focusing on the brain’s auditory region — located, appropriately enough, in the temporal lobes right above the ears — the scientists analyzed voxels, or three-dimensional pixels, of the images mathematically to detect similar patterns of neuronal excitement or quietude.“The strength of our method is that it’s hypothesis-neutral,” Dr. McDermott said. “We just present a bunch of sounds and let the data do the talking.”
  • Matching sound clips to activation patterns, the researchers determined that four of the patterns were linked to general physical properties of sound, like pitch and frequency. The fifth traced the brain’s perception of speech, and for the sixth the data turned operatic, disclosing a neuronal hot spot in the major crevice, or sulcus, of the auditory cortex that attended to every music clip the researchers had played.
  • “The sound of a solo drummer, whistling, pop songs, rap, almost everything that has a musical quality to it, melodic or rhythmic, would activate it,” Dr. Norman-Haignere said. “That’s one reason the result surprised us. The signals of speech are so much more homogeneous.”
  • The researchers have yet to determine exactly which acoustic features of music stimulate its dedicated pathway. The relative constancy of a musical note’s pitch? Its harmonic overlays? Even saying what music is can be tricky.
dpittenger

Social Media Is Not Making You a Ball of Stress - 1 views

  • “This awareness and sharing can have positive impacts on our psychosocial lives," says Murthy. "Specifically, if we—in our very busy and increasingly individualized lives—become more social via social media, this could reduce our stress levels, as sharing and more communal behaviors have historically been tied to better mental health.”
  • However, the Pew report suggests that social media can make users more aware of negative events in the lives of friends and family. And when users learn about deaths, illness, job loss or other problems among their circle of friends, they in turn feel additional stress they might have otherwise avoided.
  • No matter the platform, though, the work supports the notion that stress can act like a contagion, and it seems social media can facilitate its spread: “Increased social awareness can of course be double edged,” Murthy says.
oliviaodon

Of bears and biases: scientific judgment and the fate of Yellowstone's grizzlies | The ... - 0 views

  • In March, the U.S. Fish and Wildlife Service (USFWS) announced its intent to remove protections afforded by the U.S. Endangered Species Act (ESA) to grizzly bears in the Greater Yellowstone Ecosystem
  • However, conservation organizations oppose “delisting” GYE grizzlies. They cite persistent threats to grizzlies, public opposition to delisting and ongoing scientific uncertainty regarding the population’s viability. Indeed, scientific uncertainty, especially threats posed by a changing climate, is one reason a federal court reversed a similar decision back in 2009, returning federal protections to GYE grizzlies.
  • According to the ESA, decisions about the listing of species are to be made “solely on the basis of the best scientific and commercial data available.”
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  • Numerous environmental statutes mandate that government agencies consider “the best available science” when making decisions. And agencies routinely consult with scientific experts to fullfill such mandates.
  • Such provisions work reasonably well when science offers clear and simple, black-and-white answers. But when there is uncertainty, is the expectation of scientific objectivity realistic?
  • To gain insight into what role bias may play in listing decisions, we surveyed a group of grizzly bear researchers. We found that experts’ judgments were associated with a number of factors outside the “best commercial and scientific data,” including their professional affiliations and social norms. Furthermore, we found that while there is no consensus in the scientific community regarding the threats to grizzly bears, the majority of scientists support continued listing.
oliviaodon

The Cult of Coincidence | The Huffington Post - 0 views

  • Most people readily believe that they themselves are essentially fully independent thinkers, and that closed-mindedness, intellectual inflexibility and an irrational commitment to pre-conceived thinking dwells only in the feeble minds of others. Think about it: When was the last time in the course of discussion that someone admitted to you something like, “You’re right, I have just blindly swallowed all of the positions and cultural mores of my milieu” or, “Yes, I agree that no amount of oppositional information will ever dissuade me from the beliefs I hold?” No one is immune from this state of affairs, and it requires courage and perpetual vigilance to even venture outside of the intellectual echo chamber that most of us inhabit.
  • There are those who believe that the scientific community is uniquely positioned to avoid these pitfalls. They suggest that the system of peer review is inherently self-critical, and as such is structurally quarantined from bias. Some scientists think otherwise and note that science, in as much as it is conducted by human beings, is subject to the same partiality as every other endeavor.
  • like the communist party under Lenin, science is [in its own eyes] infallible because its judgments are collective. Critics are unneeded, and since they are unneeded, they are not welcome.
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  • A classic example of this endemic bias at work is illustrated through Einstein. He was disturbed by the implications of an expanding universe. For thousands of years it was assumed — outside of some theological circles — that matter was eternal. The notion that it came into being at a discreet point in time naturally implied that something had caused it and quite possibly that that something had done it on purpose. Not willing to accept this new information, Einstein added a now famous “fudge factor” to his equations to maintain the solid state universe that he was comfortable with — something he would later describe as “the greatest blunder of my career.”
  • If there is great resistance to notions of design and causality in science, it is exponentially greater when it comes to theology.
Javier E

I Had My DNA Picture Taken, With Varying Results - NYTimes.com - 0 views

  • Scientists have identified about 10 million SNPs within our three billion nucleotides. But an entire genome sequencing — looking at all three billion nucleotides — would cost around $3,000; the tests I took examined fewer than a million SNPs.
  • “Imagine if you took a book and you only looked at the first letter of every other page,” said Dr. Robert Klitzman, a bioethicist and professor of clinical psychiatry at Columbia. (I am a graduate student there in his Master of Bioethics program.) “You’re missing 99.9 percent of the letters that make the genome. The information is going to be limited.”
  • the major issue, experts say, is that the causes of most common diseases remain unknown. Genes account for just 5 to 20 percent of the whole picture.
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  • “Your results are not the least bit surprising,” he told me. “Anything short of sequencing is going to be short on accuracy — and even then, there’s almost no comprehensive data sets to compare to.”
  • “Even if they are accurately looking at 5 percent of the attributable risk, they’ve ignored the vast majority of the other risk factors — the dark matter for genetics — because we as a scientific community haven’t yet identified those risk factors,”
  • There are only 23 diseases that start in adulthood, can be treated, and for which highly predictive tests exist. All are rare, with hereditary breast cancer the most common. “A small percentage of people who get tested will get useful information,” Dr. Klitzman said. “But for most people, the results are not clinically useful, and they may be misleading or confusing.”
  • To be sure, my tests did provide some beneficial information. They all agreed that I lack markers associated with an increased risk of breast cancer and Alzheimer’s. That said, they were testing for only a small fraction of the genetic risks for these diseases, not for rare genetic variants that confer much of the risk. I could still develop those diseases, of course, but I don’t have reason to pursue aggressive screenings as I age.
  • He added: “If you want to spend money wisely to protect your health and you have a few hundred dollars, buy a scale, stand on it, and act accordingly.”
Javier E

Measles Proves Delicate Issue to G.O.P. Field - NYTimes.com - 0 views

  • The politics of medicine, morality and free will have collided in an emotional debate over vaccines and the government’s place in requiring them, posing a challenge for Republicans who find themselves in the familiar but uncomfortable position of reconciling modern science with the skepticism of their core conservative voters.
  • the national debate is forcing the Republican Party’s 2016 presidential hopefuls to confront questions about whether it is in the public’s interest to allow parents to decide for themselves.
  • The vaccination controversy is a twist on an old problem for the Republican Party: how to approach matters that have largely been settled among scientists but are not widely accepted by conservatives.
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  • It is a dance Republican candidates often do when they hedge their answers about whether evolution should be taught in schools. It is what makes the fight over global warming such a liability for their party, and what led last year to a widely criticized response to the Ebola scare.
  • There is evidence that vaccinations have become more of a political issue in recent years. Pew Research Center polls show that in 2009, 71 percent of both Republicans and Democrats favored requiring the vaccination of children. Five years later, Democratic support had grown to 76 percent, but Republican support had fallen to 65 percent.
  • The debate does not break entirely along right-left lines. The movement to forgo vaccinations has been popular in more liberal and affluent communities where some parents are worried that vaccines cause autism or other disorders among children.
  • Howard Dean, a presidential candidate in 2004 and a former chairman of the Democratic National Committee, said there are three groups of people who object to required vaccines: “One is people who are very much scared about their kids getting autism, which is an idea that has been completely discredited. Two, is entitled people who don’t want to put any poison in their kids and view this as poison, which is ignorance more than anything else. And three, people who are antigovernment in any way.”
  • The issue has more political potency among conservative voters who are highly skeptical of anything required by the government.
  • for Republicans like Mr. Paul who appeal to the kind of libertarian conservatives who are influential in states like Iowa and New Hampshire, which hold the first two contests in the battle for the nomination, there is an appeal in framing the issue as one of individual liberty.Asked about immunizations again later on Monday, Mr. Paul was even more insistent, saying it was a question of “freedom.” He grew irritated with a CNBC host who pressed him and snapped: “The state doesn’t own your children. Parents own the children.”
Javier E

Opinion | Is There Such a Thing as an Authoritarian Voter? - The New York Times - 0 views

  • Jonathan Weiler, a political scientist at the University of North Carolina at Chapel Hill, has spent much of his career studying the appeal of authoritarian figures: politicians who preach xenophobia, beat up on the press and place themselves above the law while extolling “law and order” for everyone else.
  • He is one of many scholars who believe that deep-seated psychological traits help explain voters’ attraction to such leaders. “These days,” he told me, “audiences are more receptive to the idea” than they used to be.
  • “In 2018, the sense of fear and panic — the disorientation about how people who are not like us could see the world the way they do — it’s so elemental,” Mr. Weiler said. “People understand how deeply divided we are, and they are looking for explanations that match the depth of that division.”
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  • Moreover, using the child-rearing questionnaire, African-Americans score as far more authoritarian than whites
  • what, exactly, is an “authoritarian” personality? How do you measure it?
  • for more than half a century — social scientists have tried to figure out why some seemingly mild-mannered people gravitate toward a strongman
  • the philosopher (and German refugee) Theodor Adorno collaborated with social scientists at the University of California at Berkeley to investigate why ordinary people supported fascist, anti-Semitic ideology during the war. They used a questionnaire called the F-scale (F is for fascism) and follow-up interviews to analyze the “total personality” of the “potentially antidemocratic individual.”
  • The resulting 1,000-page tome, “The Authoritarian Personality,” published in 1950, found that subjects who scored high on the F-scale disdained the weak and marginalized. They fixated on sexual deviance, embraced conspiracy theories and aligned themselves with domineering leaders “to serve powerful interests and so participate in their power,”
  • “Globalized free trade has shafted American workers and left us looking for a strong male leader, a ‘real man,’” he wrote. “Trump offers exactly what my maladapted unconscious most craves.”
  • one of the F-scale’s prompts: “Obedience and respect for authority are the most important virtues children should learn.” Today’s researchers often diagnose latent authoritarians through a set of questions about preferred traits in children: Would you rather your child be independent or have respect for elders? Have curiosity or good manners? Be self-reliant or obedient? Be well behaved or considerate?
  • a glance at the Christian group Focus on the Family’s “biblical principles for spanking” reminds us that your approach to child rearing is not pre-political; it is shorthand for your stance in the culture wars.
  • “All the social sciences are brought to bear to try to explain all the evil that persists in the world, even though the liberal Enlightenment worldview says that we should be able to perfect things,” said Mr. Strouse, the Trump voter
  • what should have been obvious:
  • “Trump’s electoral strength — and his staying power — have been buoyed, above all, by Americans with authoritarian inclinations,” wrote Matthew MacWilliams, a political consultant who surveyed voters during the 2016 election
  • The child-trait test, then, is a tool to identify white people who are anxious about their decline in status and power.
  • new book, “Prius or Pickup?,” by ditching the charged term “authoritarian.” Instead, they divide people into three temperamental camps: fixed (people who are wary of change and “set in their ways”), fluid (those who are more open to new experiences and people) and mixed (those who are ambivalent).
  • “The term ‘authoritarian’ connotes a fringe perspective, and the perspective we’re describing is far from fringe,” Mr. Weiler said. “It’s central to American public opinion, especially on cultural issues like immigration and race.”
  • Other scholars apply a typology based on the “Big Five” personality traits identified by psychologists in the mid-20th century: extroversion, agreeableness, conscientiousness, neuroticism and openness to experience. (It seems that liberals are open but possibly neurotic, while conservatives are more conscientious.)
  • Historical context matters — it shapes who we are and how we debate politics. “Reason moves slowly,” William English, a political economist at Georgetown, told me. “It’s constituted sociologically, by deep community attachments, things that change over generations.”
  • “it is a deep-seated aspiration of many social scientists — sometimes conscious and sometimes unconscious — to get past wishy-washy culture and belief. Discourses that can’t be scientifically reduced are problematic” for researchers who want to provide “a universal account of behavior.”
  • in our current environment, where polarization is so unyielding, the apparent clarity of psychological and biological explanations becomes seductive
  • Attitudes toward parenting vary across cultures, and for centuries African-Americans have seen the consequences of a social and political hierarchy arrayed against them, so they can hardly be expected to favor it — no matter what they think about child rearing
  • — we know that’s not going to happen. People have wicked tendencies.”
  • as the social scientific portrait of humanity grows more psychological and irrational, it comes closer and closer to approximating the old Adam of traditional Christianity: a fallen, depraved creature, unable to see himself clearly except with the aid of a higher power
  • The conclusions of political scientists should inspire humility rather than hubris. In the end, they have confirmed what so many observers of our species have long suspected: None of us are particularly free or rational creatures.
  • Allen Strouse is not the archetypal Trump voter whom journalists discover in Rust Belt diners. He is a queer Catholic poet and scholar of medieval literature who teaches at the New School in New York City. He voted for Mr. Trump “as a protest against the Democrats’ failures on economic issues,” but the psychological dimensions of his vote intrigue him. “Having studied Freudian analysis, and being in therapy for 10 years, I couldn’t not reflexively ask myself, ‘How does this decision have to do with my psychology?’” he told me.
  • their preoccupation with childhood and “primitive and irrational wishes and fears” have influenced the study of authoritarianism ever since.
anonymous

Holding hands can sync brainwaves, ease pain, study shows -- ScienceDaily - 0 views

  • Reach for the hand of a loved one in pain and not only will your breathing and heart rate synchronize with theirs, your brain wave patterns will couple up too, according to a study published this week in the Proceedings of the National Academy of Sciences (PNAS).The study, by researchers with the University of Colorado Boulder and University of Haifa, also found that the more empathy a comforting partner feels for a partner in pain, the more their brainwaves fall into sync. And the more those brain waves sync, the more the pain goes away.
  • The study is the latest in a growing body of research exploring a phenomenon known as "interpersonal synchronization," in which people physiologically mirror the people they are with. It is the first to look at brain wave synchronization in the context of pain, and offers new insight into the role brain-to-brain coupling may play in touch-induced analgesia, or healing touch.
  • He and his colleagues at University of Haifa recruited 22 heterosexual couples, age 23 to 32 who had been together for at least one year and put them through several two-minute scenarios as electroencephalography (EEG) caps measured their brainwave activity. The scenarios included sitting together not touching; sitting together holding hands; and sitting in separate rooms. Then they repeated the scenarios as the woman was subjected to mild heat pain on her arm.Merely being in each other's presence, with or without touch, was associated with some brain wave synchronicity in the alpha mu band, a wavelength associated with focused attention. If they held hands while she was in pain, the coupling increased the most.
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  • The study did not explore whether the same effect would occur with same-sex couples, or what happens in other kinds of relationships. The takeaway for now, Pavel said: Don't underestimate the power of a hand-hold."You may express empathy for a partner's pain, but without touch it may not be fully communicated," he said.
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