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David McGavock

Theory of mind - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Theory_of_mind

mind philosophy cognition awareness scanning

shared by David McGavock on 12 Jul 11 - Cached
  • The emerging field of social neuroscience has also begun to address this debate, by imaging humans while performing tasks demanding the understanding of an intention, belief or other mental state.
    • David McGavock
      David McGavock on 12 Jul 11
       
      Mirror Neurons
  • The theory of mind (ToM) impairment describes a difficulty someone would have with perspective taking. This is also sometimes referred to as mind-blindness.
  • Individuals who experience a theory of mind deficit have difficulty determining the intentions of others, lack understanding of how their behavior affects others, and have a difficult time with social reciprocity.[27]
  • ...5 more annotations...
  • ToM deficits have been observed in people with autism spectrum disorders, schizophrenics, persons under the influence of alcohol and narcotics, sleep-deprived persons, and persons who are experiencing severe emotional or physical pain.
  • Research by Vittorio Gallese, Luciano Fadiga and Giacomo Rizzolatti (reviewed in [51]) has shown that some sensorimotor neurons, which are referred to as mirror neurons, first discovered in the premotor cortex of rhesus monkeys, may be involved in action understanding.
  • Neuropsychological evidence has provided support for neuroimaging results on the neural basis of theory of mind. A study with patients suffering from a lesion of the temporoparietal junction of the brain (between the temporal lobe and parietal lobe) reported that they have difficulty with some theory of mind tasks.[49] This shows that theory of mind abilities are associated with specific parts of the human brain.
  • However, there is also evidence against the link between mirror neurons and theory of mind. First, macaque monkeys have mirror neurons but do not seem to have a 'human-like' capacity to understand theory of mind and belief. Second, fMRI studies of theory of mind typically report activation in the mPFC, temporal poles and TPJ or STS,[54] but these brain areas are not part of the mirror neuron system.
    • David McGavock
      David McGavock on 12 Jul 11
       
      Contrary Mirror Neuron Evidence
  • The presumption that others have a mind is termed a theory of mind because each human can only intuit the existence of his/her own mind through introspection, and no one has direct access to the mind of another.
David McGavock

Interpersonal ties - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Interpersonal_ties

ties Interpersonal PLN social learning culture

shared by David McGavock on 27 Jun 11 - Cached
  • more novel information flows to individuals through weak rather than strong ties.
  • Acquaintances, by contrast, know people that we do not, and thus receive more novel information.[1]
  • the fact that two people may know each other by name does not necessarily qualify the existence of a weak tie. If their interaction is negligible the tie may be absent. The "strength" of an interpersonal tie is a linear combination of the amount of time, the emotional intensity, the intimacy (or mutual confiding), and the reciprocal services which characterize each tie.[2]
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  • In 1954, the Russian mathematical psychologist Anatol Rapoport commented on the "well-known fact that the likely contacts of two individuals who are closely acquainted tend to be more overlapping than those of two arbitrarily selected individuals." This argument became one of the cornerstones of social network theory.
  • In a related line of research in 1969, anthropologist Bruce Kapferer, published "Norms and the Manipulation of Relationships in a Work Context" after doing field work in Africa. In the document, he postulated the existence of multiplex ties, characterized by multiple contexts in a relationship.[4][5]
  • Social networks In social network theory, social relationships are viewed in terms of nodes and ties. Nodes are the individual actors within the networks, and ties are the relationships between the actors. There can be many kinds of ties between the nodes. In its simplest form, a social network is a map of all of the relevant ties between the nodes being studied.
  • David McGavock on 27 Jun 11
     
    "Interpersonal ties From Wikipedia, the free encyclopedia Nodes (individuals) and ties (connections) in social networks. In mathematical sociology, interpersonal ties are defined as information-carrying connections between people. Interpersonal ties, generally, come in three varieties: strong, weak, or absent. Weak social ties, it is argued, are responsible for the majority of the embeddedness and structure of social networks in society as well as the transmission of information through these networks. "
David McGavock

…My heart's in Accra » CHI keynote: Desperately Seeking Serendipity - 1 views

www.ethanzuckerman.com/...esperately-seeking-serendipity

filter bubble diversity bias cosmopolitan global local

shared by David McGavock on 07 Jul 11 - No Cached
  • Cities embody political decisions make by their designers.
    • David McGavock
      David McGavock on 07 Jul 11
       
      Sounds like program or be programmed to me
  • It’s much harder to get the architects behind Facebook or Foursquare articulate the behaviors they’re trying to enable and the political assumptions that underly those decisions.
    • David McGavock
      David McGavock on 07 Jul 11
       
      Again - Programmers!
  • An urban planner who wants to make changes to a city’s structure is held in check by a matrix of forces: a desire to preserve history, the needs and interests of businesses and residents in existing communities, the costs associated with executing new projects. Progress is slow,
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  • For those planning the future of Facebook, it’s hard to study what’s succeeded and failed for MySpace, in part because an exodus of users to Facebook is gradually turning MySpace into a ghost town.
  • If we learn from real-world cities instead of abandoned digital ones, what lessons might we take?
    • David McGavock
      David McGavock on 07 Jul 11
       
      Conclusions
  • The Jacobs/Moses debate suggests we need to be cautious of architectures that offer convenience and charge isolation as a price of admission. This is the concern Eli Pariser articulates in his (excellent) new book, “The Filter Bubble“.
  • He worries that between Google’s personalized search and the algorithmic decisions Facebook makes in displaying news from our friends, our online experience is an increasingly isolated one,
  • They’re cars, rather than public transit or busy sidewalks.
  • A map of Vancouver overlaid with my friends’ recommendations is one thing; one that recommends restaurants based on paid advertisements and doesn’t reveal this practice is another entirely.
  • The map I want is the one that lets me shuffle not just through my friends’ preferences but through annotations from different groups: first time visitors to the city; long-time Vancouverites; foodies; visitors from Japan, Korea or China.
    • David McGavock
      David McGavock on 07 Jul 11
       
      A diverse sampling of taste
  • People’s actions inscribe their intentions onto a city.
  • Online spaces are often so anxious to show me how my friends are using a space that they obscure how other audiences are using it.
  • It’s possible to find out what’s popular on Facebook to an audience broader than that of your friends.
    • David McGavock
      David McGavock on 07 Jul 11
       
      Something Google+ should consider
  • One of the reasons curation is such a helpful strategy for wandering is that it reveals community maxima. It can be helpful to know that Times Square is the most popular tourist destination in New York if only so we can avoid it.
  • knowing where Haitian taxi cab drivers go for goat soup is often useful data on where the best Haitian food is to be found.
  • If you want to explore beyond the places your friends think are the most enjoyable, or those the general public thinks are enjoyable, you need to seek out curators who are sufficiently far from you in cultural terms and who’ve annotated their cities in their own ways.
    • David McGavock
      David McGavock on 07 Jul 11
       
      key to breaking the filter bubbles
  • Geocaching is its own peculiar form of community annotation, where the immediate goal is leaving your signature on someone else’s logbook, but the deeper goal is encouraging you to explore in a way you otherwise wouldn’t.
  • SF0, founded by a trio of Chicagoans transplanted to San Francisco, was designed to encourage players to discover things they’d never seen or done in the city, in a way that encouraged independence and exploration.
  • Combining the insights we may find from studying the organization of cities with the ability to reshuffle and sort digitally may let us think about designing online spaces for serendipity in different and powerful ways.
    • David McGavock
      David McGavock on 07 Jul 11
       
      Conclusion?
  • - How do we design physical spaces to encourage serendipity? - What lessons about serendipity in physical spaces can we bring into the virtual realm? - How can we annotate the physical world, digitally, in ways that expand our encounters with the world, rather than limiting them?
    • David McGavock
      David McGavock on 07 Jul 11
       
      Questions over conclusion
  • We hope that cities are serendipity engines. By putting a diverse set of people and things together in a confined place, we increase the chances that we’re going to stumble onto the unexpected. It’s worth asking the question: do cities actually work this way?
  • Most of us are fairly predictable
  • We hope for random encounter with a diverse citizenry to build a web of weak ties that increases our sense of involvement in the community, as Bob Putnam suggested in Bowling Alone. And we worry that we may instead isolate and cocoon ourselves when faced with a situation where we feel like outsiders, as Putnam’s recent research suggests.
  • “Census data can describe the segregation of my block, but how about telling me how segregated my life is? Location data points in that direction.
  • Nathan Eagle, who has worked with Sandy Pentland at MIT’s Media Lab on the idea of “reality mining”, digesting huge sets of data like mobile phone records, estimates that he can predict the location of “low-entropy individuals” with 90-95% accuracy based on this type of data
  • We all filter the places we live into the places where we’re regulars and the ones we avoid, the parts of town where we feel familiar and where we feel foreign. We do this based on where we live, where we work, and who we like to spend time with.
  • I’m less concerned about left-right polarization in the US, and more concerned about us/them polarization around the world
  • through the design of the systems we use and our behavior with those systems, I see reasons to worry that our use of the internet may be less cosmopolitan and more isolated that we would hope.
  • There were – and are – reasons to distrust curators, but there’s a critical aspect of their work I believe we need to preserve as we move towards new models for organizing news.
    • David McGavock
      David McGavock on 07 Jul 11
       
      interesting view of curation
  • Countries that have more than 40 million or more internet users generally have a very strong bias towards local sources – the mean is roughly 95%/5%, which makes Americans look (slightly) cosmopolitan in comparison.
  • US broadcast media focuses much more on entertainment stories than on international news.)
  • What’s striking to me about this preference data is that there’s so little effort required to access international news sources like BBC, the Times of India or the Mail and Guardian – they’re one click away and don’t require crossing a language barrier – and how strong the “local” bias for national news sources appears to be.
  • on January 12th, I published “What if Tunisia had a revolution, but nobody watched?“… and I got a lot of phone calls when Ben Ali fled the country two days later.
  • The revolution in Tunisia caught intelligence and diplomatic services around the world flat-footed. It didn’t have to – there was a wealth of information being published on Tunisian Facebook pages
  • I’m forced to admit that there’s no way I would have known about the revolution brewing if I didn’t have close Tunisian friends.
  • I’m less interested in the ways in which we limit our paths through cities than in how we constrain what we do and don’t encounter online.
    • David McGavock
      David McGavock on 07 Jul 11
       
      key point
  • On the other hand, curators invariably have biases
  • We need mechanisms to ensure that search gets complemented with serendipity.
    • David McGavock
      David McGavock on 07 Jul 11
       
      Point we have been discussing. Filter bubbles
  • Facebook offers a different answer to the question, “What do I need to know?” – “You need to know what your friends and your friends of friends already know that you do not.”
    • David McGavock
      David McGavock on 07 Jul 11
       
      Facebook world = ummm....
  • there’s a decent chance that their collective intelligence has some blind spots
  • The problem, of course, is that if your friends don’t know about a revolution in Tunisia or a great new Vietnamese restaurant, you may not know either.
  • It’s worth asking whether that bubble is able to provide us with the serendipity we hope for from the web.
  • Serendipity, at first glance, looks like the positive side of unintended consequences, the happy accident. But that’s not what the term meant, at least originally.
  • The word was coined by Horace Walpole, an 18th century British aristocrat,
  • A Google search turns up 11 million pages with the term, including restaurants, movies and gift shops named “serendipity”, but very few on unexpected discovery through sagacity.
    • David McGavock
      David McGavock on 07 Jul 11
       
      Serendipity vs. Sagacity
  • he refers to a Persian fairy tale, The Three Princes of Serendip, in which the titular characters were “always making discoveries, by accidents and sagacity, of things they were not in quest of.”
  • Louis Pasteur observed, “In the fields of observation chance favors only the prepared mind.”
  • In “The Travels and Adventures of Serendipity”, he and Barber explore discovery in a General Electric laboratory under the leadership of Willis Whitney, who encouraged a work environment that focused as much on fun as it did on discovery.
    • David McGavock
      David McGavock on 07 Jul 11
       
      Sounds like Google. Tinkering, time to play, time to work.
  • If we want to create online spaces to encourage serendipity, we might start by learning from cities.
    • David McGavock
      David McGavock on 07 Jul 11
       
      Moving to the point of online learning
  • Our loss, I believe, is that we’ve lost sight of the idea that we could prepare ourselves for serendipity, both personally and structurally.
  • vibrancy comes from the ongoing chance encounter between people using a neighborhood for different purposes, encountering one another as their paths intersect and cross.
  • The neighborhoods Jacobs celebrates are certainly not the most efficient in terms of an individual’s ability to move quickly and independently. Vibrancy and efficiency may not be diametrically opposed, but it’s likely that the forces are in tension.
David McGavock

As Above, So Below: The Worldview of Lynn Margulis | Reality Sandwich - 2 views

realitysandwich.com/..._below_worldview_lynn_margulis

Gaia Margulis evolution process

shared by David McGavock on 30 Mar 14 - No Cached
  • This journey led her to emphasize in all her scientific work two phenomena -- the fusing of distinct beings into a single being: symbiosis; and the interaction of organisms and their environments to create relational "loops" that led to regulation of many Earth systems: Gaia Theory.
  • Bacteria were here first and are with us still, comprising a major part of the biosphere.  They are unseen with the naked eye, they lack nuclei (for this reason, they are called prokaryotes -- "pro" = before,  "karyon" = nucleus). Their forms were legion and their metabolisms were (and continue to be) strange.
  • What is known is that the spirochete didn't digest the thermoplasmid and the thermoplasmid did not digest the spirochete.  As Margulis was fond of saying, "1 + 1 = 1."  There was a union of the two, resulting in an entirely new being.  They were inseparable, literally.  The thermoplasmid had a rotor now, and the spirochete had a "head".
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  • Margulis, inspired by the work of little-known biologists, revealed and proved these mergers for us.  At first, her worked was rejected and scoffed at.  It did not fit the still-dominant neo-Darwinian paradigm that tells us all evolutionary novelty comes from natural selection acting on genes and the gradual accumulation of random genetic mutation.  But eventually these symbioses were accepted because they could not be ignored
  • our physical selves are universes composed of the movemenst, biological agreements, and interactions of these beings.
  • "Identity is not an object; it is a process with addresses for all the different directions and dimensions in which it moves..." Margulis once stated, with her colleague Ricardo Guerrero.
  • Indeed, symbiogenesis has been observed in the lab.  An amoeba population, accidentally infected with bacteria was observed over long periods of time, and soon enough, the infecting bacteria could not be removed from the infected amoeba without killing the organism. 
  • Gaia is the work of the relational loops of push and pull between bacteria, other organisms, and the environment
  • But Lovelock came up with an understandable and accesible metaphor in the form of a computer program called Daisyworld.  Daisyworld is not the "proof" of Gaia: Lovelock and his colleague Andrew Watson devised the program to see if living and environmental factors could theoretically interact without intention. 
  • "Gaia," Margulis's former student Greg Hinkle said, "is just symbiosis as seen from space."
  • Gaia processes are real and observable (and sometimes referred to as "biogeochemistry", a term more acceptable to mainstream science).  Furthermore, the five kingdoms (bacteria, protoctists, fungi, plants, animals) of life are all touched by symbiosis
  • After she found James Lovelock, they worked on making those processes known.  Their collaboration resulted in Gaia Theory, which was a disciplinary symbiosis -- the theoretical expression of Margulis's interdisciplinary life.
  • All animals have symbiotic partners in their guts.  Remove these symbionts and the animals die.
  • Microcosmos show us a bacterial view of the world.  Bacteria exchange their genes laterally.  This means they don't pass their genomic information only when they reproduce (though this can happen), but also  through their simple existence.
  • Along with the many detailed examples of bacterial mergers at varying levels of cellular complexity, the world revealed by Acquiring Genomes is also a world of mating between distinct phyla
  • What is definite is that the merging of beings is key, and symbiogenesis offers a clearly observable alternative to the consistent but woefully incomplete neo-Darwinian paradigm.
  • David Bohm, who said
  • "Science is the search for truth...whether we like it or not."
  • Many neo-Darwinist concerns circled nervously around words like "Gaia" and "cooperation" (which Margulis did not like to use).  They were, perhaps rightly, concerned that these terms were ripe for religious appropriation.  But Margulis herself was outspoken against such mishandling of her research. 
    • David McGavock
      David McGavock on 30 Mar 14
       
      Cooperation - not God - meets Gaia
  • it's much more complex than that -- there is something "in it" for every symbiont,
  • "Gaia is not merely an organism."  The Earth is beyond stale conception.  It is more magnificent and active than we can imagine.  Gaia is object and process.
  • this complexity is impossible to incorporate in a linear and reductive understanding.
    • David McGavock
      David McGavock on 30 Mar 14
       
      This is a question that I often wonder - how different thinkers (using different modes of understanding) come to different conclusions.  What is it that separates the linear (reductive) thinker from the holistic (systemic) thinker?
  • If Gaia is conscious, it possesses a consciousness of a different magnitude, probably of a different order all together.
  • Perhaps as we -- in the newly and deeply connected world of the internet, social profiles, and globalization -- witness the dissolution of the cult of isolated individuality and embark on understanding a clearer and more nuanced view of individuality, so to will we ready ourselves for a clearer view of evolution and life.
    • David McGavock
      David McGavock on 30 Mar 14
       
      This is a good question; how does this connected world reframe our conception of ourselves as individuals? Can we, at once, become humbled while we contribute? Can we imagine ourselves as less important while we excel in our pursuits?
  • Dawkins, who claims to be an atheist, relies on a host of selfish angels within us and the possibility for meme-salvation to justify his theory.  He substantiates his magical worldview on a meager past of scientific work.
  • To encompass complex systems with our thinking, we must imagine a model that is less like "cause-effect" more like "being-manifestation."  That is, multiple layers and numerous agents of forces unconsciously conspire together, and their conspiring is so intermingled, that it is simultaneously cause and effect, and thus beyond both. 
  • Now that Margulis has died, it remains our choice to catch up with what she and her life's work have set in motion.  To do so, we must bring together the many fields of knowledge she embodied.  Biologists must talk to physicists, virologists must talk to geologists, cosmologists must talk to microbiologists, and scientists musty talk to non-scientists.  This motion of meeting and exchanging ideas, if we act with it, will evolve our thinking.
  • David McGavock on 30 Mar 14
     
    " Now that Margulis has died, it remains our choice to catch up with what she and her life's work have set in motion.  To do so, we must bring together the many fields of knowledge she embodied.  Biologists must talk to physicists, virologists must talk to geologists, cosmologists must talk to microbiologists, and scientists musty talk to non-scientists.  This motion of meeting and exchanging ideas, if we act with it, will evolve our thinking. "
David McGavock

New Device Allows Brain to Bypass Spinal Cord, Move Paralyzed Limbs - ScienceNewsline - 0 views

www.sciencenewsline.com/...2014062610429000.html

device brain bypass spinal brain-body augmentation medicine neuroscience

shared by David McGavock on 29 Jun 14 - No Cached
  • For the first time ever, a paralyzed man can move his fingers and hand with his own thoughts thanks to an innovative partnership between The Ohio State University Wexner Medical Center and Battelle.
  • “It’s much like a heart bypass, but instead of bypassing blood, we’re actually bypassing electrical signals,” said Chad Bouton, research leader at Battelle. “We’re taking those signals from the brain, going around the injury, and actually going directly to the muscles.”
    • David McGavock
      David McGavock on 29 Jun 14
       
      Like bypass
  • Ian’s brain signals bypass his injured spinal cord and move his hand, hence the name Neurobridge.
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  • During a three-hour surgery on April 22, Rezai implanted a chip smaller than a pea onto the motor cortex of Burkhart’s brain. The tiny chip interprets brain signals and sends them to a computer, which recodes and sends them to the high-definition electrode stimulation sleeve that stimulates the proper muscles to execute his desired movements. Within a tenth of a second, Burkhart’s thoughts are translated into action.
  • Battelle also developed a non-invasive neurostimulation technology in the form of a wearable sleeve that allows for precise activation of small muscle segments in the arm to enable individual finger movement, along with software that forms a ‘virtual spinal cord’ to allow for coordination of dynamic hand and wrist movements.
  • As part of the study, Burkhart worked for months using the electrode sleeve to stimulate his forearm to rebuild his atrophied muscles so they would be more responsive to the electric stimulation.
  • David McGavock on 29 Jun 14
     
    Example of innovation in technology and biology
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