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Javier E

The Irrational Consumer: Why Economics Is Dead Wrong About How We Make Choices - Derek ... - 4 views

  • Atlantic.displayRandomElement('#header li.business .sponsored-dropdown-item'); Derek Thompson - Derek Thompson is a senior editor at The Atlantic, where he oversees business coverage for the website. More Derek has also written for Slate, BusinessWeek, and the Daily Beast. He has appeared as a guest on radio and television networks, including NPR, the BBC, CNBC, and MSNBC. All Posts RSS feed Share Share on facebook Share on linkedin Share on twitter « Previous Thompson Email Print Close function plusOneCallback () { $(document).trigger('share'); } $(document).ready(function() { var iframeUrl = "\/ad\/thanks-iframe\/TheAtlanticOnline\/channel_business;src=blog;by=derek-thompson;title=the-irrational-consumer-why-economics-is-dead-wrong-about-how-we-make-choices;pos=sharing;sz=640x480,336x280,300x250"; var toolsClicked = false; $('#toolsTop').click(function() { toolsClicked = 'top'; }); $('#toolsBottom').click(function() { toolsClicked = 'bottom'; }); $('#thanksForSharing a.hide').click(function() { $('#thanksForSharing').hide(); }); var onShareClickHandler = function() { var top = parseInt($(this).css('top').replace(/px/, ''), 10); toolsClicked = (top > 600) ? 'bottom' : 'top'; }; var onIframeReady = function(iframe) { var win = iframe.contentWindow; // Don't show the box if there's no ad in it if (win.$('.ad').children().length == 1) { return; } var visibleAds = win.$('.ad').filter(function() { return !($(this).css('display') == 'none'); }); if (visibleAds.length == 0) { // Ad is hidden, so don't show return; } if (win.$('.ad').hasClass('adNotLoaded')) { // Ad failed to load so don't show return; } $('#thanksForSharing').css('display', 'block'); var top; if(toolsClicked == 'bottom' && $('#toolsBottom').length) { top = $('#toolsBottom')[0].offsetTop + $('#toolsBottom').height() - 310; } else { top = $('#toolsTop')[0].offsetTop + $('#toolsTop').height() + 10; } $('#thanksForSharing').css('left', (-$('#toolsTop').offset().left + 60) + 'px'); $('#thanksForSharing').css('top', top + 'px'); }; var onShare = function() { // Close "Share successful!" AddThis plugin popup if (window._atw && window._atw.clb && $('#at15s:visible').length) { _atw.clb(); } if (iframeUrl == null) { return; } $('#thanksForSharingIframe').attr('src', "\/ad\/thanks-iframe\/TheAtlanticOnline\/channel_business;src=blog;by=derek-thompson;title=the-irrational-consumer-why-economics-is-dead-wrong-about-how-we-make-choices;pos=sharing;sz=640x480,336x280,300x250"); $('#thanksForSharingIframe').load(function() { var iframe = this; var win = iframe.contentWindow; if (win.loaded) { onIframeReady(iframe); } else { win.$(iframe.contentDocument).ready(function() { onIframeReady(iframe); }) } }); }; if (window.addthis) { addthis.addEventListener('addthis.ready', function() { $('.articleTools .share').mouseover(function() { $('#at15s').unbind('click', onShareClickHandler); $('#at15s').bind('click', onShareClickHandler); }); }); addthis.addEventListener('addthis.menu.share', function(evt) { onShare(); }); } // This 'share' event is used for testing, so one can call // $(document).trigger('share') to get the thank you for // sharing box to appear. $(document).bind('share', function(event) { onShare(); }); if (!window.FB || (window.FB && !window.FB._apiKey)) { // Hook into the fbAsyncInit function and register our listener there var oldFbAsyncInit = (window.fbAsyncInit) ? window.fbAsyncInit : (function() { }); window.fbAsyncInit = function() { oldFbAsyncInit(); FB.Event.subscribe('edge.create', function(response) { // to hide the facebook comments box $('#facebookLike span.fb_edge_comment_widget').hide(); onShare(); }); }; } else if (window.FB) { FB.Event.subscribe('edge.create', function(response) { // to hide the facebook comments box $('#facebookLike span.fb_edge_comment_widget').hide(); onShare(); }); } }); The Irrational Consumer: Why Economics Is Dead Wrong About How We Make Choices By Derek Thompson he
  • First, making a choice is physically exhausting, literally, so that somebody forced to make a number of decisions in a row is likely to get lazy and dumb.
  • Second, having too many choices can make us less likely to come to a conclusion. In a famous study of the so-called "paradox of choice", psychologists Mark Lepper and Sheena Iyengar found that customers presented with six jam varieties were more likely to buy one than customers offered a choice of 24.
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  • Many of our mistakes stem from a central "availability bias." Our brains are computers, and we like to access recently opened files, even though many decisions require a deep body of information that might require some searching. Cheap example: We remember the first, last, and peak moments of certain experiences.
  • The third check against the theory of the rational consumer is the fact that we're social animals. We let our friends and family and tribes do our thinking for us
  • neurologists are finding that many of the biases behavioral economists perceive in decision-making start in our brains. "Brain studies indicate that organisms seem to be on a hedonic treadmill, quickly habituating to homeostasis," McFadden writes. In other words, perhaps our preference for the status quo isn't just figuratively our heads, but also literally sculpted by the hand of evolution inside of our brains.
  • The popular psychological theory of "hyperbolic discounting" says people don't properly evaluate rewards over time. The theory seeks to explain why many groups -- nappers, procrastinators, Congress -- take rewards now and pain later, over and over again. But neurology suggests that it hardly makes sense to speak of "the brain," in the singular, because it's two very different parts of the brain that process choices for now and later. The choice to delay gratification is mostly processed in the frontal system. But studies show that the choice to do something immediately gratifying is processed in a different system, the limbic system, which is more viscerally connected to our behavior, our "reward pathways," and our feelings of pain and pleasure.
  • the final message is that neither the physiology of pleasure nor the methods we use to make choices are as simple or as single-minded as the classical economists thought. A lot of behavior is consistent with pursuit of self-interest, but in novel or ambiguous decision-making environments there is a good chance that our habits will fail us and inconsistencies in the way we process information will undo us.
  • Our brains seem to operate like committees, assigning some tasks to the limbic system, others to the frontal system. The "switchboard" does not seem to achieve complete, consistent communication between different parts of the brain. Pleasure and pain are experienced in the limbic system, but not on one fixed "utility" or "self-interest" scale. Pleasure and pain have distinct neural pathways, and these pathways adapt quickly to homeostasis, with sensation coming from changes rather than levels
  • Social networks are sources of information, on what products are available, what their features are, and how your friends like them. If the information is accurate, this should help you make better choices. On the other hand, it also makes it easier for you to follow the crowd rather than engaging in the due diligence of collecting and evaluating your own information and playing it against your own preferences
Javier E

One of Us - Lapham's Quarterly - 0 views

  • On what seems like a monthly basis, scientific teams announce the results of new experiments, adding to a preponderance of evidence that we’ve been underestimating animal minds, even those of us who have rated them fairly highly
  • an international group of prominent neuroscientists meeting at the University of Cambridge issued “The Cambridge Declaration on Consciousness in Non-Human Animals,” a document stating that “humans are not unique in possessing the neurological substrates that generate consciousness.” It goes further to conclude that numerous documented animal behaviors must be considered “consistent with experienced feeling states.”
  • Only with the Greeks does there enter the notion of a formal divide between our species, our animal, and every other on earth.
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  • there’s that exquisite verse, one of the most beautiful in the Bible, the one that says if God cares deeply about sparrows, don’t you think He cares about you? One is so accustomed to dwelling on the second, human, half of the equation, the comforting part, but when you put your hand over that and consider only the first, it’s a little startling: God cares deeply about the sparrows. Not just that, He cares about them individually. “Are not five sparrows sold for two pennies?” Jesus says. “Yet not one of them is forgotten in God’s sight.”
  • The modern conversation on animal consciousness proceeds, with the rest of the Enlightenment, from the mind of René Descartes, whose take on animals was vividly (and approvingly) paraphrased by the French philosopher Nicolas Malebranche: they “eat without pleasure, cry without pain, grow without knowing it; they desire nothing, fear nothing, know nothing.” Descartes’ term for them was automata
  • In On the Origin of Species, Charles Darwin made the intriguing claim that among the naturalists he knew it was consistently the case that the better a researcher got to know a certain species, the more each individual animal’s actions appeared attributable to “reason and the less to unlearnt instinct.” The more you knew, the more you suspected that they were rational. That marks an important pivot, that thought, insofar as it took place in the mind of someone devoted to extremely close and meticulous study of living animals, a mind that had trained itself not to sentimentalize.
  • The sheer number and variety of experiments carried out in the twentieth century—and with, if anything, a renewed intensity in the twenty-first—exceeds summary. Reasoning, language, neurology, the science of emotions—every chamber where “consciousness” is thought to hide has been probed. Birds and chimps and dolphins have been made to look at themselves in mirrors—to observe whether, on the basis of what they see, they groom or preen (a measure, if somewhat arbitrary, of self-awareness). Dolphins have been found to grieve. Primates have learned symbolic or sign languages and then been interrogated with them. Their answers show thinking but have proved stubbornly open to interpretation on the issue of “consciousness,” with critics warning, as always, about the dangers of anthropomorphism, animal-rights bias, etc.
  • If we put aside the self-awareness standard—and really, how arbitrary and arrogant is that, to take the attribute of consciousness we happen to possess over all creatures and set it atop the hierarchy, proclaiming it the very definition of consciousness (Georg Christoph Lichtenberg wrote something wise in his notebooks, to the effect of: only a man can draw a self-portrait, but only a man wants to)—it becomes possible to say at least the following: the overwhelming tendency of all this scientific work, of its results, has been toward more consciousness. More species having it, and species having more of it than assumed.
  • The animal kingdom is symphonic with mental activity, and of its millions of wavelengths, we’re born able to understand the minutest sliver. The least we can do is have a proper respect for our ignorance.
  • The philosopher Thomas Nagel wrote an essay in 1974 titled, “What Is It Like To Be a Bat?”, in which he put forward perhaps the least overweening, most useful definition of “animal consciousness” ever written, one that channels Spinoza’s phrase about “that nature belonging to him wherein he has his being.” Animal consciousness occurs, Nagel wrote, when “there is something that it is to be that organism—something it is like for the organism.” The strangeness of his syntax carries the genuine texture of the problem. We’ll probably never be able to step far enough outside of our species-reality to say much about what is going on with them, beyond saying how like or unlike us they are. Many things are conscious on the earth, and we are one, and our consciousness feels like this; one of the things it causes us to do is doubt the existence of the consciousness of the other millions of species. But it also allows us to imagine a time when we might stop doing that.
maxwellokolo

Are Cholesterol-Lowering Statins Associated With Reduced Alzheimer's Risk? - 0 views

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    Neuroscience News has recent neuroscience research articles, brain research news, neurology studies and neuroscience resources for neuroscientists, students, and science fans and is always free to join. Our neuroscience social network has science groups, discussion forums, free books, resources, science videos and more.
maxwellokolo

Evolving Deep Brain Stimulation Patterns - 0 views

  •  
    Neuroscience News has recent neuroscience research articles, brain research news, neurology studies and neuroscience resources for neuroscientists, students, and science fans and is always free to join. Our neuroscience social network has science groups, discussion forums, free books, resources, science videos and more.
markfrankel18

The Cambridge Declaration on Consciousness - Shunya's Notes - 0 views

  • A congregation of scientists in Cambridge, UK, recently issued a formal declaration that lots of non-human animals, including mammals, birds, and likely even octopuses are conscious beings. What do they mean by consciousness, you ask? It's a state of awareness of one's body and one's environment, anywhere from basic perceptual awareness to the reflective self-awareness of humans. This declaration will surely strike many of us as ancient news and a long overdue recognition, even as it may annoy the stubborn skeptics among us. 
  • We declare the following: “The absence of a neocortex does not appear to preclude an organism from experiencing affective states. Convergent evidence indicates that non-human animals have the neuroanatomical, neurochemical, and neurophysiological substrates of conscious states along with the capacity to exhibit intentional behaviors. Consequently, the weight of evidence indicates that humans are not unique in possessing the neurological substrates that generate consciousness. Non- human animals, including all mammals and birds, and many other creatures, including octopuses, also possess these neurological substrates.
Javier E

This is what your brain looks like on magic mushrooms (Wired UK) - 0 views

  • In recent years, a focus on brain structures and regions has given way to an emphasis on neurological networks: how cells and regions interact, with consciousness shaped not by any given set of brain regions, but by their interplay.
  • Understanding the networks, however, is no easy task
  • In mathematical terms, said Petri, normal brains have a well-ordered correlation state. There's not much cross-linking between networks. That changes after the psilocybin dose. Suddenly the networks are cross-linking like crazy, but not in random ways. New types of order emerge.
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  • Perhaps some aspects of consciousness arise from these meta-networks -- and to investigate the proposition, the researchers analysed fMRI scans of 15 people after being injected with psilocybin, the active ingredient in magic mushrooms, and compared them to scans of their brain activity after receiving a placebo.
  • "One possible by-product of this greater communication across the whole brain is the phenomenon of synaesthesia" -- the experience, common during psychedelic experiences, of sensory mix-up: tasting colours, feeling sounds, seeing smells, and so on.
  • A truer way of visualising it, he said, would be in three dimensions, with connections between networks forming a sponge-like topography.
  • "The big question in neuroscience is where consciousness comes from," Petri said. For now, he said, "We don't know."
carolinewren

How movies influence perceptions of brain disorders - The Globe and Mail - 0 views

  • Blockbusters, from the 2002 action thriller The Bourne Identity to last year’s Scarlett Johansson vehicle Lucy, reinforce pervading misconceptions about how the brain works.
  • “Watching movies about neurological disorders, if they’re done well, I think gives people an appreciation for what the characters may go through,” she says, while films that promote stereotypes “can actually be a little bit more hurtful to people who have those disorders.”
  • this 2003 Disney film offers surprisingly solid insight about a neurological disorder.
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  • Dory, voiced by comedian Ellen DeGeneres, suffers classic symptoms of anterograde amnesia, which is typically associated with damage to the hippocampus, the area of the brain involved in encoding memories.
  • the portrayal of the condition is spot on. She has difficulty remembering names and retaining new information, but her condition doesn’t affect her sense of identity.
  • Jason Bourne, the amnesiac main character of this action flick, exhibits no trouble with short-term memories, but wakes up after suffering an unspecified injury to the brain with no recollection of who he is.
  • it’s just a perfect example of the neuromyth
  • explaining that the “double conk” myth – the idea that someone can lose their identity after being hit in the head and regain it after a second blow or psychological trigger – is actually a conflation of two ideas.
  • Identity loss is more closely associated with psychogenic amnesia, an extremely rare and controversial diagnosis, whose origins, some experts believe, may be influenced by culture.
  • This sci-fi action film relies on the conceit that humans only use 10 per cent of their brains.
  • Sure, filmmakers may take artistic licence, she says, but the trouble is many people actually believe we only use a portion of our brains.
  • she notes that due to its success, the film may have inadvertently contributed to the stereotype of the autistic savant – the notion that people with autism excel in a specific area, which, in the case of Hoffman’s character, involved dealing in numbers. In reality, Spiers says, this is very rare.
ilanaprincilus06

'Brain fog': the people struggling to think clearly months after Covid | World news | T... - 1 views

  • Seven months later, the rollercoaster is far from over: the 36-year-old from Byron Bay, Australia is still experiencing symptoms – including difficulties with thinking that are often described as “brain fog”.
  • “Brain fog seems like such an inferior description of what is actually going on. It’s completely crippling. I am unable to think clearly enough to [do] anything,”
  • “When I get tired it becomes much worse and sometimes all I can do is lay in bed and watch TV.” Brain fog has made her forgetful to the point that she says she burns pots while cooking.
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  • “I feel like a shadow of my former self. I am not living right now, I am simply existing.”Nicholson-McKellar is far from alone.
  • “Doctors and scientists wouldn’t necessarily use [brain fog] as a diagnosis as it doesn’t exactly tell you what the problem is and what could be causing that,” says Zandi.
  • Zandi says there could be many causes of brain fog in Covid survivors, from inflammation in the body to a lack of oxygen to the brain – the latter is a particular concern for those who spent time on ventilators.
  • terms similar to “brain fog” have previously been used in connection with extreme tiredness, low mood and conditions such as post-traumatic stress disorder (PTSD) – the latter of which is thought to affect about a quarter of Covid survivors who were in intensive care.
  • The aim of the new work, he says, is to explore whether even those without neurological symptoms show markers of neurological damage, and to what extent any processes are ongoing.
  • “I’m just existing in this haze-like frame of mind in which I’m constantly on autopilot,” she says.
  • “What we don’t know is how long it will go on for,” says Zandi. “But we have seen patients who get better and are functioning.”
anonymous

Human Brain: facts and information - 0 views

  • The human brain is more complex than any other known structure in the universe.
  • Weighing in at three pounds, on average, this spongy mass of fat and protein is made up of two overarching types of cells—called glia and neurons—and it contains many billions of each.
  • The cerebrum is the largest part of the brain, accounting for 85 percent of the organ's weight. The distinctive, deeply wrinkled outer surface is the cerebral cortex. It's the cerebrum that makes the human brain—and therefore humans—so formidable. Animals such as elephants, dolphins, and whales actually have larger brains, but humans have the most developed cerebrum. It's packed to capacity inside our skulls, with deep folds that cleverly maximize the total surface area of the cortex.
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  • The cerebrum has two halves, or hemispheres, that are further divided into four regions, or lobes. The frontal lobes, located behind the forehead, are involved with speech, thought, learning, emotion, and movement.
  • Behind them are the parietal lobes, which process sensory information such as touch, temperature, and pain.
  • At the rear of the brain are the occipital lobes, dealing with vision
  • Lastly, there are the temporal lobes, near the temples, which are involved with hearing and memory.
  • The second-largest part of the brain is the cerebellum, which sits beneath the back of the cerebrum.
  • diencephalon, located in the core of the brain. A complex of structures roughly the size of an apricot, its two major sections are the thalamus and hypothalamus
  • The brain is extremely sensitive and delicate, and so it requires maximum protection, which is provided by the hard bone of the skull and three tough membranes called meninges.
  • Want more proof that the brain is extraordinary? Look no further than the blood-brain barrier.
  • This led scientists to learn that the brain has an ingenious, protective layer. Called the blood-brain barrier, it’s made up of special, tightly bound cells that together function as a kind of semi-permeable gate throughout most of the organ. It keeps the brain environment safe and stable by preventing some toxins, pathogens, and other harmful substances from entering the brain through the bloodstream, while simultaneously allowing oxygen and vital nutrients to pass through.
  • One in five Americans suffers from some form of neurological damage, a wide-ranging list that includes stroke, epilepsy, and cerebral palsy, as well as dementia.
  • Alzheimer’s disease, which is characterized in part by a gradual progression of short-term memory loss, disorientation, and mood swings, is the most common cause of dementia. It is the sixth leading cause of death in the United States
  • 50 million people suffer from Alzheimer’s or some form of dementia. While there are a handful of drugs available to mitigate Alzheimer’s symptoms, there is no cure.
  • Unfortunately, negative attitudes toward people who suffer from mental illness are widespread. The stigma attached to mental illness can create feelings of shame, embarrassment, and rejection, causing many people to suffer in silence.
  • In the United States, where anxiety disorders are the most common forms of mental illness, only about 40 percent of sufferers receive treatment. Anxiety disorders often stem from abnormalities in the brain’s hippocampus and prefrontal cortex.
  • Attention-deficit/hyperactivity disorder, or ADHD, is a mental health condition that also affects adults but is far more often diagnosed in children.
  • ADHD is characterized by hyperactivity and an inability to stay focused.
  • Depression is another common mental health condition. It is the leading cause of disability worldwide and is often accompanied by anxiety. Depression can be marked by an array of symptoms, including persistent sadness, irritability, and changes in appetite.
  • The good news is that in general, anxiety and depression are highly treatable through various medications—which help the brain use certain chemicals more efficiently—and through forms of therapy
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    Here is some anatomy of the brain and descriptions of diseases like Alzheimer's and conditions like ADHD, depression, anxiety.
katedriscoll

Phantom limb pain: A literature review - 0 views

  • . The purpose of this review article is to summarize recent researches focusing on phantom limb in order to discuss its definition, mechanisms, and treatments.
  • The incidence of phantom limb pain has varied from 2% in earlier records to higher rates today. Initially, patients were less likely to mention pain symptoms than today which is a potential explanation for the discrepancy in incidence rates. However, Sherman et al.4 discuss that only 17% phantom limb complaints were initiated treated by physicians. Consequently, it is important to determine what constitutes phantom pain in order to provide efficacious care. Phantom pain is pain sensation to a limb, organ or other tissue after amputation and/or nerve injury.5 In podiatry, the predominant cause of phantom limb pain is after limb amputation due to diseased state presenting with an unsalvageable limb. Postoperative pain sensations from stump neuroma pain, prosthesis, fibrosis, and residual local tissue inflammation can be similar to phantom limb pain (PLP). Patients with PLP complain of various sensations including burning, stinging, aching, and piercing pain with changing warmth and cold sensation to the amputated area which waxes and wanes.6 Onset of symptoms may be elicited by environmental, emotional, or physical changes.
  • The human body encompasses various neurologic mechanisms allowing reception, transport, recognition, and response to numerous stimuli. Pain, temperature, crude touch, and pressure sensory information are carried to the central nervous system via the anterolateral system, with pain & temperature information transfer via lateral spinothalamic tracts to the parietal lobe. In detail, pain sensation from the lower extremity is transported from a peripheral receptor to a first degree pseudounipolar neurons in the dorsal root ganglion and decussate and ascend to the third-degree neurons within the thalamus.7 This sensory information will finally arrive at the primary sensory cortex in the postcentral gyrus of the parietal lobe which houses the sensory homunculus.8 It is unsurprising that with an amputation that such an intricate highway of information transport to and from the periphery may have the potential for problematic neurologic developments.
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  • How does pain sensation, a protection mechanism for the human body, become chronic and unrelenting after limb loss? This is a question researchers still ask today with no concise conclusion. Phantom limb pain occurs more frequently in patients who also experience longer periods of stump pain and is more likely to subside as the stump pain subsides.9 Researchers have also found dorsal root ganglion cells change after a nerve is completely cut. The dorsal root ganglion cells become more active and sensitive to chemical and mechanical changes with potential for plasticity development at the dorsal horn and other areas.10 At the molecular level, increasing glutamate and NMDA (N-methyl d-aspartate) concentrations correlate to increased sensitivity which contributes to allodynia and hyperalgesia.11 Flor et al.12 further described the significance of maladaptive plasticity and the development of memory for pain and phantom limb pain. They correlated it to the loss of GABAergic inhibition and the development of glutamate induced long-term potentiation changes and structural changes like myelination and axonal sprouting.
  • Phantom limb pain in some patients may gradually disappear over the course of a few months to one year if not treated, but some patients suffer from phantom limb pain for decades. Treatments include pharmacotherapy, adjuvant therapy, and surgical intervention. There are a variety of medications to choose from, which includes tricyclic antidepressants, opioids, and NSAIDs, etc. Among these medications, Tricyclic antidepressant is one of the most common treatments. Studies have shown that Amitriptyline (a tricyclic antidepressant) has a good effect on relieving neuropathic pain.25
  • Phantom limb pain is very common in amputees. As a worldwide issue, it has been studied by a lot of researchers. Although phantom limb sensation has already been described and proposed by French military surgeon Ambroise Pare 500 years ago, there is still no detailed explanation of its mechanisms. Therefore, more research will be needed on the different types of mechanisms of phantom limb pain. Once researchers and physicians are able to identify the mechanism of phantom limb pain, mechanism-based treatment will be rapidly developed. As a result, more patients will be benefit from it in the long run.
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    One of the articles we read mentioned phantom limbs. This article goes more indepth on what a phantom limb is, why it happens and some cures.
manhefnawi

Why Coloring and Doodling Make Us Feel Good | Mental Floss - 0 views

  • there was a neurological basis for the relaxation-inducing powers of coloring, doodling, and drawing
  • All three activities produced an increase in blood flow to the prefrontal cortex, a region that plays a central part in the brain’s reward system. During rest periods, blood flow slowed until it reached normal resting rates.
  • Sometimes, we tend to be very critical of what we do because we have internalized, societal judgments of what is good or bad art and, therefore, who is skilled and who is not," she said. "We might be reducing or neglecting a simple potential source of rewards perceived by the brain. And this biological proof could potentially challenge some of our assumptions about ourselves
manhefnawi

Nabokov's Synesthetic Alphabet: From the Weathered Wood of A to the Thundercloud of Z -... - 0 views

  • Metaphorical thinking is the wellspring of the human imagination — that virtuosic cognitive pivot of describing what a thing is through something it is not. “Everything which distinguishes man from the animals depends upon this ability to volatilize perceptual metaphors in a schema, and thus to dissolve an image into a concept,” Nietzsche proclaimed in his meditation on metaphor and reality.
  • Some of our mightiest metaphors draw on color to describe our perceptual and psychoemotional reality
  • unmistakable color in their mind’s eye
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  • Synesthesia is a neurological crossing of the senses
manhefnawi

The Fascinating Science Behind Why We See 'Faces' In Objects | Mental Floss - 0 views

  • People can discern faces in meaningless clouds
  • There's a name for this uncanny ability to see faces everywhere: pareidolia (roughly, from the Greek for "wrong shape").
  • Human brains are exquisitely attuned to perceiving faces—in fact, there's an entire region of the brain called the fusiform gyrus that is dedicated to it. Its functions are evident even from early childhood: Studies have shown that shortly after birth, babies display more interest in cartoon faces with properly placed features than in similar images where the features are scrambled.
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  • Others have found that paranormal and religious believers are more prone to pareidolia than skeptics and nonbelievers. Although believers and nonbelievers had equivalent sensitivity to faces, the paranormal and religious believers had lower thresholds for reporting that a face was present than nonbelievers did, possibly due to being more open to the suggestion that the images might contain faces.
  • Pareidolia can be exacerbated in cases of fatigue and in some neurological diseases, such as Lewy body dementia
  • It may not be a strictly human phenomenon either. Research has shown that rhesus monkeys see illusory facial features on inanimate objects such as toasters or sliced vegetables.
  • Pareidolia extends beyond human likenesses: In 2007, a "monkey tree" in Singapore attracted thousands of visitors, who swore that a bizarrely shaped callus growing on a tree was a manifestation of either the Chinese deity Sun Wukong (also known as the Monkey King) or the Hindu monkey god Hanuman.
  • the brain makes much ado about nothing.
Javier E

Opinion | Transgender biology debates should focus on the brain, not the body - The Was... - 0 views

  • what, then, is a biological male, or female? What determines this supposedly simple truth? It’s about chromosomes, right?
  • The study found that adolescent boys and girls who described themselves as trans responded like the peers of their perceived gender.
  • It may be that what’s in your pants is less important than what’s between your ears.
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  • What the research has found is that the brains of trans people are unique: neither female nor male, exactly, but something distinct.
  • But what does that mean, a male brain, or a female brain, or even a transgender one?
  • It’s a fraught topic, because brains are a collection of characteristics, rather than a binary classification of either/or
  • yet scientists continue to study the brain in hopes of understanding whether a sense of the gendered self can, at least in part, be the result of neurology
  • Well, not entirely. Because not every person with a Y chromosome is male, and not every person with a double X is female. The world is full of people with other combinations: XXY (or Klinefelter Syndrome), XXX (or Trisomy X), XXXY, and so on. There’s even something called Androgen Insensitivity Syndrome, a condition that keeps the brains of people with a Y from absorbing the information in that chromosome. Most of these people develop as female, and may not even know about their condition until puberty — or even later.
  • t there’s a problem with using neurology as an argument for trans acceptance — it suggests that, on some level, there is something wrong with transgender people, that we are who we are as a result of a sickness or a biological hiccup.
  • trying to open people’s hearts by saying “Check out my brain!” can do more harm than good, because this line of argument delegitimizes the experiences of many trans folks. It suggests that there’s only one way to be trans — to feel trapped in the wrong body, to go through transition, and to wind up, when all is said and done, on the opposite-gender pole. It suggests that the quest trans people go on can only be considered successful if it ends with fitting into the very society that rejected us in the first place.
  • All the science tells us, in the end, is that a biological male — or female — is not any one thing, but a collection of possibilities.
  • No one who embarks upon a life as a trans person in this country is doing so out of caprice, or a whim, or a delusion. We are living these wondrous and perilous lives for one reason only — because our hearts demand it.
  • what we need now is not new legislation to make things harder. What we need now is understanding, not cruelty. What we need now is not hatred, but love.
  • the important thing is not that they feel like a woman, or a man, or something else. What matters most is the plaintive desire, to be free to feel the way I feel.
Javier E

Psychological nativism - Wikipedia - 0 views

  • In the field of psychology, nativism is the view that certain skills or abilities are "native" or hard-wired into the brain at birth. This is in contrast to the "blank slate" or tabula rasa view, which states that the brain has inborn capabilities for learning from the environment but does not contain content such as innate beliefs.
  • Some nativists believe that specific beliefs or preferences are "hard-wired". For example, one might argue that some moral intuitions are innate or that color preferences are innate. A less established argument is that nature supplies the human mind with specialized learning devices. This latter view differs from empiricism only to the extent that the algorithms that translate experience into information may be more complex and specialized in nativist theories than in empiricist theories. However, empiricists largely remain open to the nature of learning algorithms and are by no means restricted to the historical associationist mechanisms of behaviorism.
  • Nativism has a history in philosophy, particularly as a reaction to the straightforward empiricist views of John Locke and David Hume. Hume had given persuasive logical arguments that people cannot infer causality from perceptual input. The most one could hope to infer is that two events happen in succession or simultaneously. One response to this argument involves positing that concepts not supplied by experience, such as causality, must exist prior to any experience and hence must be innate.
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  • The philosopher Immanuel Kant (1724–1804) argued in his Critique of Pure Reason that the human mind knows objects in innate, a priori ways. Kant claimed that humans, from birth, must experience all objects as being successive (time) and juxtaposed (space). His list of inborn categories describes predicates that the mind can attribute to any object in general. Arthur Schopenhauer (1788–1860) agreed with Kant, but reduced the number of innate categories to one—causality—which presupposes the others.
  • Modern nativism is most associated with the work of Jerry Fodor (1935–2017), Noam Chomsky (b. 1928), and Steven Pinker (b. 1954), who argue that humans from birth have certain cognitive modules (specialised genetically inherited psychological abilities) that allow them to learn and acquire certain skills, such as language.
  • For example, children demonstrate a facility for acquiring spoken language but require intensive training to learn to read and write. This poverty of the stimulus observation became a principal component of Chomsky's argument for a "language organ"—a genetically inherited neurological module that confers a somewhat universal understanding of syntax that all neurologically healthy humans are born with, which is fine-tuned by an individual's experience with their native language
  • In The Blank Slate (2002), Pinker similarly cites the linguistic capabilities of children, relative to the amount of direct instruction they receive, as evidence that humans have an inborn facility for speech acquisition (but not for literacy acquisition).
  • A number of other theorists[1][2][3] have disagreed with these claims. Instead, they have outlined alternative theories of how modularization might emerge over the course of development, as a result of a system gradually refining and fine-tuning its responses to environmental stimuli.[4]
  • Many empiricists are now also trying to apply modern learning models and techniques to the question of language acquisition, with marked success.[20] Similarity-based generalization marks another avenue of recent research, which suggests that children may be able to rapidly learn how to use new words by generalizing about the usage of similar words that they already know (see also the distributional hypothesis).[14][21][22][23]
  • The term universal grammar (or UG) is used for the purported innate biological properties of the human brain, whatever exactly they turn out to be, that are responsible for children's successful acquisition of a native language during the first few years of life. The person most strongly associated with the hypothesising of UG is Noam Chomsky, although the idea of Universal Grammar has clear historical antecedents at least as far back as the 1300s, in the form of the Speculative Grammar of Thomas of Erfurt.
  • This evidence is all the more impressive when one considers that most children do not receive reliable corrections for grammatical errors.[9] Indeed, even children who for medical reasons cannot produce speech, and therefore have no possibility of producing an error in the first place, have been found to master both the lexicon and the grammar of their community's language perfectly.[10] The fact that children succeed at language acquisition even when their linguistic input is severely impoverished, as it is when no corrective feedback is available, is related to the argument from the poverty of the stimulus, and is another claim for a central role of UG in child language acquisition.
  • Researchers at Blue Brain discovered a network of about fifty neurons which they believed were building blocks of more complex knowledge but contained basic innate knowledge that could be combined in different more complex ways to give way to acquired knowledge, like memory.[11
  • experience, the tests would bring about very different characteristics for each rat. However, the rats all displayed similar characteristics which suggest that their neuronal circuits must have been established previously to their experiences. The Blue Brain Project research suggests that some of the "building blocks" of knowledge are genetic and present at birth.[11]
  • modern nativist theory makes little in the way of specific falsifiable and testable predictions, and has been compared by some empiricists to a pseudoscience or nefarious brand of "psychological creationism". As influential psychologist Henry L. Roediger III remarked that "Chomsky was and is a rationalist; he had no uses for experimental analyses or data of any sort that pertained to language, and even experimental psycholinguistics was and is of little interest to him".[13]
  • , Chomsky's poverty of the stimulus argument is controversial within linguistics.[14][15][16][17][18][19]
  • Neither the five-year-old nor the adults in the community can easily articulate the principles of the grammar they are following. Experimental evidence shows that infants come equipped with presuppositions that allow them to acquire the rules of their language.[6]
  • Paul Griffiths, in "What is Innateness?", argues that innateness is too confusing a concept to be fruitfully employed as it confuses "empirically dissociated" concepts. In a previous paper, Griffiths argued that innateness specifically confuses these three distinct biological concepts: developmental fixity, species nature, and intended outcome. Developmental fixity refers to how insensitive a trait is to environmental input, species nature reflects what it is to be an organism of a certain kind, and the intended outcome is how an organism is meant to develop.[24]
Javier E

Heaven Is Real: A Doctor's Experience With the Afterlife - Print View - The Daily Beast - 0 views

  • As a neurosurgeon, I did not believe in the phenomenon of near-death experiences. I grew up in a scientific world, the son of a neurosurgeon. I followed my father’s path and became an academic neurosurgeon, teaching at Harvard Medical School and other universities. I understand what happens to the brain when people are near death, and I had always believed there were good scientific explanations for the heavenly out-of-body journeys described by those who narrowly escaped death.
  • In the fall of 2008, however, after seven days in a coma during which the human part of my brain, the neocortex, was inactivated, I experienced something so profound that it gave me a scientific reason to believe in consciousness after death.
  • All the chief arguments against near-death experiences suggest that these experiences are the results of minimal, transient, or partial malfunctioning of the cortex. My near-death experience, however, took place not while my cortex was malfunctioning, but while it was simply off. This is clear from the severity and duration of my meningitis, and from the global cortical involvement documented by CT scans and neurological examinations. According to current medical understanding of the brain and mind, there is absolutely no way that I could have experienced even a dim and limited consciousness during my time in the coma, much less the hyper-vivid and completely coherent odyssey I underwent.
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  • What happened to me demands explanation. Modern physics tells us that the universe is a unity—that it is undivided. Though we seem to live in a world of separation and difference, physics tells us that beneath the surface, every object and event in the universe is completely woven up with every other object and event. There is no true separation. Before my experience these ideas were abstractions. Today they are realities. Not only is the universe defined by unity, it is also—I now know—defined by love. The universe as I experienced it in my coma is—I have come to see with both shock and joy—the same one that both Einstein and Jesus were speaking of in their (very) different ways.
  • Today many believe that the living spiritual truths of religion have lost their power, and that science, not faith, is the road to truth. Before my experience I strongly suspected that this was the case myself. But I now understand that such a view is far too simple. The plain fact is that the materialist picture of the body and brain as the producers, rather than the vehicles, of human consciousness is doomed. In its place a new view of mind and body will emerge, and in fact is emerging already. This view is scientific and spiritual in equal measure and will value what the greatest scientists of history themselves always valued above all: truth.
maxwellokolo

Depressive Behaviors Caused by Disrupting Brain's Internal Clock: Mouse Study - 0 views

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    Neuroscience News has recent neuroscience research articles, brain research news, neurology studies and neuroscience resources for neuroscientists, students, and science fans and is always free to join. Our neuroscience social network has science groups, discussion forums, free books, resources, science videos and more.
maxwellokolo

Depression is Driven by Network of Genes That Spans Brain Circuits - 0 views

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    Neuroscience News has recent neuroscience research articles, brain research news, neurology studies and neuroscience resources for neuroscientists, students, and science fans and is always free to join. Our neuroscience social network has science groups, discussion forums, free books, resources, science videos and more.
maxwellokolo

Forever Young: Meditation Might Slow the Age-Related Loss of Gray Matter in the Brain - 0 views

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    Neuroscience News has recent neuroscience research articles, brain research news, neurology studies and neuroscience resources for neuroscientists, students, and science fans and is always free to join. Our neuroscience social network has science groups, discussion forums, free books, resources, science videos and more.
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