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Rudy Garns

Similar brain cortex changes during human development and evolution - 0 views

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    Hill et al. show that expansion of the human cortex during development involves the same brain areas that have changed the most in the evolutionary expansion from monkey to human brains. They suggest that it is beneficial for regions of recent evolutionary expansion to remain less mature at birth, perhaps to increase the influence of postnatal experience on their development.
Rudy Garns

Colour, is it in the brain? - 0 views

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    "Language requires the coordination of perceptually grounded categories with a socially-negotiated set of shared linguistic conventions to express them; i.e. language is based on shared groups of meanings that arise from our perceptual interaction with the external world and the way in which we convey that relationship to other human beings. Deacon's opinion is that neurological predispositions and socio-ecological constraints sponsored the development and evolution of language, and that the subsequent feedback system gave rise to a complex coevolution of the two. Founded neurological determinism within evolutionary and socio-ecological boundaries drives the core of his argument." « Neuroanthropology
Rudy Garns

A Field Guide to the Philosophy of Mind (Marco Nani and Massimo Marraffa (eds)) - 0 views

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    "Philosophy of mind and the philosophical issues arising in the allied domain of cognitive sciences constitute a fast developing territory, which is very well introduced by a number of excellent web resources...."
Rudy Garns

Neuroscience: The Co-Evolution of Language and the Brain w/ Terrence Deacon - 0 views

  • We suspected that the areas in human brains where we find language connections would be quite different in monkey brains. The surprise was that, as far as we could tell, the plan was the same plan. The way these areas were connected, even areas that we identified as language areas, or the correspondent areas in monkeys, had the same kinds of connections.
  • embryology changes over the course of evolution and that changes the resultant
  • self organization. A lot of the information that goes into building brains is not actually there in the genes. It’s sort of cooked up or whipped up on the fly as brains develop. So, if one is to explain how a very complicated organ like the brain actually evolved, changed it’s function to be able to do something like language, one has to understand it through this very complicated prism of self organization and a kind of mini-evolution process that goes on as brains develop in which cells essentially compete with each other for nutrients.
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  • Language has changed the environments in which brains have evolved.
  • I think that the connections are different because the brain is bigger and because not all parts expanded at the same rate.
  • We undoubtedly passed through not maybe one stage of what you might call a proto language but probably many proto languages, many forms of this linguistic symbolic communication system over the course of our evolution, all of them leaving somewhat of a trace.
  • I think clearly early language-like behavior had to involve much less vocalization because the brains that preceded us, mammal brains, are not well suited to organizing sound in precise, discrete and rapidly produced learned sequences.
  • I look at us as an African ape that’s been tweaked just enough to be able to do this radically unnatural kind of activity: language.
  • It turns out that very likely our ancestors, the australopithecines, and of course before them, had, like other mammals, a relatively disconnected control of the larynx and even of the tongue, to some extent. By that I mean that there was probably not much voluntary control over vocalization and certainly not at the level at which you could stop and start it on a dime, so to speak, with very little effort associated with it. 
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    The following interview with Dr. Terrence Deacon was conducted at the studios of KCSM (PBS) Television in San Mateo, California on September 5, 2003.
Rudy Garns

Study traces the evolution of the human brain - 0 views

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    "The research in the journal Nature Neuroscience by Professor Seth Grant, Head of the Genes to Cognition Programme at the Wellcome Trust Sanger Institute, suggests that it is not size alone that gives more brain power. Instead, he found that, during evolution, increasingly sophisticated molecular processing of nerve impulses - notably by providing more connections in the brain - allowed development of animals with more complex behaviours. " (Telegraph)
Rudy Garns

What makes us human - Pasternak - 1 views

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    What makes us human? There are at least as many answers to this provocative and searching question as there are authors of this compendium. In the various articles you will find suggestions that include the 'spirit of man', referring particularly to religion, speech and not just language, imitation and 'mimetics', cooking, high levels of cognitive ability, causal belief, that humans are symbolic creatures, innate curiosity and the desire to know, mental time travel, and the ability to read other's minds. These all have cognitive ability as a common thread and, deriving from this, high-level development of language and cultural transmission.
Rudy Garns

Multiple drafts model - 0 views

  • Our conscious experience is of events that can usually be objectively timed quite precisely
  • there must be a quite specific moment at which each item makes its entrance in our experience.
  • the timing represented in consciousness
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  • the timing of the conscious representing
  • The work done by the imaginary homunculus in the Cartesian Theater must be broken up and distributed
  • doesn’t have to be done again in a central re-presentation process
  • massively parallel process
  • Exactly when did I (as opposed to various parts of my brain) become informed, aware, conscious, of some event?’
  • replaced the metaphor of multiple drafts with the metaphor of fame in the brain
  • not a precisely datable transition in the brain
  • the accumulation of a wide variety of sequelae
  • One team in your brain has taken charge while another team is still sorting out the implications.
  • Like the transition from night to day
  • speciation, in which the same curious retrospective status can be transparently observed.
  • “retrospective coronations”
  • a “neural correlate of consciousness”
  • Andaman Islanders
  • Inuit
  • How much influence is enough for fame?
  • consciousness is not what it seems to be
  • whatever event in the brain happens to boost some aspect of the current content-fixations into prominence,
  • a new stimulus that draws attention (resources) to a particular area of visual space or a particular segment on the auditory stream, for instance, thereby promoting the influence (the fame, the clout) of whatever is occurring there and rendering it reportable and recollectable–if the other drafts competing for this influence permit it.
  • Finding the recurrent processes (which is likely, given the adroitness exhibited by those who drive on auto-pilot) would still leave open the question of whether to call those contents conscious or merely potentially conscious.
  • the historical property of having won a temporally local competition with sufficient decisiveness to linger long enough to enable recollection at some later time.
  • because our interpersonal communications, our discussions and comparisons, generate both the terms and the topics of consciousness.
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    "The multiple drafts model of consciousness (Dennett, 1991, 1996, 1998, Dennett and Kinsbourne, 1992) was developed as an alternative to the perennially attractive, but incoherent, model of conscious experience Dennett calls Cartesian materialism, the idea that after early unconscious processing occurs in various relatively peripheral brain structures "everything comes together" in some privileged central place in the brain-which Dennett calls the Cartesian Theater --for "presentation" to the inner self or homunculus. There is no such place in the brain, but many theories seem to presuppose that there must be something like it." (Dennet & Akins, Scholarpedia)
Rudy Garns

Are Pentagon Nerds Developing Packs of Man-Hunting Killer Robots? - 0 views

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    'The Pentagon's Small Business Innovation Research (SBIR) program recently sent out a call for contractors to design a pack of robots whose main purpose would be to track down what the SBIR ominously referred to as "noncooperative human subject[s]."' | Media and Technology | AlterNet
Rudy Garns

Without Miracles: Brain Evolution and Development: The Selection of Neurons and Synapses - 0 views

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    "The most complex object yet discovered anywhere in the universe is the organ that fills the space between our ears. Although weighing only about 1300 to 1500 grams (three to four pounds), the human brain contains over 11 billion specialized nerve cells, or neurons, capable of receiving, processing, and relaying the electrochemical pulses on which all our sensations, actions, thoughts, and emotions depend.[2] But it is not the sheer number of neurons alone that is most striking about the brain, but how they are organized and interconnected. And to understand how neurons communicate with each other we first must consider their typical structure."
Rudy Garns

The Baldwin Effect and its Significance - 0 views

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    Kim Sterelney. The Baldwin Effect and Its Significance: A Review of Bruce Weber and David Depew (eds) Evolution and Learning: The Baldwin Effect Reconsidered; MIT Press, Cambridge, Mass 2003, pp x, 341.
Rudy Garns

In Monkey Babble, Seeking Key to Human Language Development - 0 views

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    Do apes and monkeys have a secret language that has not yet been decrypted? And if so, will it resolve the mystery of how the human faculty for language evolved? Biologists have approached the issue in two ways, by trying to teach human language to chimpanzees and other species, and by listening to animals in the wild.
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