Bob Blum Neuro Psych AI Nov 2021Preview
Open in TheBrain

Intro Dehaene

<p>Feb 17, 2014 05:02 PM</p>

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Lascaux Cave &nbsp;the Apse</p>

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Fig 1: &nbsp;intestines vs rib cage.</p>

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Michel Jouvet &nbsp;paradoxical sleep &nbsp;erect penis dreamer; &nbsp;mind flying to distant places, free as a sparrow.</p>

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Egypt: &nbsp;the Ba &nbsp;immaterial soul.</p>

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U[amoshads &nbsp;the spirit as a dove flying away.</p>

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doves and white-windeg birds as Chrstian soul... and angels.</p>

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flying spitis ... the universal metaphor for the autonomous mind.</p>

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stuff of thoughts differs radically from lowly matter.. our bodies.</p>

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DESCARTES CHALLENGE</p>

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Plato Phaedo 4th cent BC &nbsp;and &nbsp;Thom Aquinas &nbsp;Summa theologica &nbsp;Chrsit view of the soul.</p>

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Rene Descartes 1596 to 1650...dualism</p>

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Damasio in 1994 &nbsp;Descartes Error... &nbsp;many new books start by BASHING DESCARTES

for allegedly setting neurosi years behind.</p>

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Descarte3s.. pioneering sci and a reductionist. &nbsp;&nbsp;1st exercise in syn bio and theory modeling.</p>

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loc 107 &nbsp;why did Desc affirm immaterial soul?

cuz his mechan model could not do the job.</p>

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1) hwo to ever use words to declare our thought

2) &nbsp;flexible reasoning... &nbsp;how to generate an infin variety of thoughts?</p>

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The last problem: &nbsp;BRAIN initiative Obama.</p>

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1962 &nbsp;BAN by George Miller in 1962</p>

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late 1980s it changed.</p>

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Cracking Consc: has become an issue of experimental ingenuity...</p>

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CONSC can be experimentally manipulated.</p>

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CONSC &nbsp;loc 160 &nbsp;THREE concepts: &nbsp;WAKEFULNESS/ vigiliance</p>

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ATTENTION &nbsp;focusing mental rources on pice of info</p>

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CONSC ACCESS: &nbsp;some attend info becomes reportable.</p>

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he argues only the last &nbsp;CONSC ACCESS &nbsp;&nbsp;is important &nbsp;(may have been too brief or faint)</p>

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DOZENS of ways of studing consc access in the lab.</p>

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CONSc of self &nbsp;I see myself. &nbsp;&nbsp;can manipulate that with OOBE in MRI.</p>

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disagrees: &nbsp;phenomeonal consc that is distinct from consc access is highly misleading => dualism.</p>

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<b>TO SEE OR NOT TO SEE.</b>..</p>

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inticatge &nbsp;avalanche of B of neurons. &nbsp;may take 1/2 second.</p>

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loc 186: &nbsp;cluttered scene... one item is invisible;

distract attn as in magic

binoc rivalry... brain spontan oscillates...</p>

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The perceived image &nbsp;(R vs L eye) &nbsp;starts out with minimal diff in the brain but

it must be amplified... &nbsp;&nbsp;when where (and how) this amplif occurs is the object of new sci of consc.</p>

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The experi strategy of <b>creating a minimal contrast btwn CONSC and UNCONSC was the</b>

<b>key idea that cracked wide open the doors.</b>..... &nbsp;many expt contrasts.</p>

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the duanting problem was reduced to<b> deciphering the brain mechs that distinguish the two sets of trials</b>...</p>

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what counts is whether the S can SEE the stim.</p>

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Psychologists &nbsp;were forced to find new way of monitoring introspection...</p>

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WATSON &nbsp;had forcefully ousted introspection.</p>

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"intropsection forms no essential part of its methods"</p>

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Signatures of Consc Thots &nbsp;loc 226:</p>

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this has turned study of consc into a normal expt science.</p>

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15 years his lab has studied this fir every tool.. fMRI, EEG, MEG, and trodes.</p>

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in one expt after antoher the same sigs show up; &nbsp;&nbsp;same signatures show up.. &nbsp;remarekably stable

great variety of visual, audit, tactile, and cog stims.</p>

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My collabs and I: &nbsp;the Global Neuronal Workspace.</p>

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loc 240 &nbsp;we propose that &nbsp;CONSC is global info broacasting within the cortex

it arises &nbsp;from a neuronal network &nbsp;whose raison d'etre is massive sharing of info in the brain.</p>

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DENNET calls this &nbsp;"FAME in the BRAIN" &nbsp;&nbsp;</p>

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CONSC &nbsp;SELECTS, amplifies and propagates relevant thoughts.</p>

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we believe... special set of neurons &nbsp;thruout brain: &nbsp;GIANT CELLS with long axons crisscross the cortex.</p>

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When enuf brain regions AGREE about the importance of incoming sens info, &nbsp;they sync into

large scale global communic.</p>

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A broad network ignites into a burst of high level activation... &nbsp;the nautre of this ignition

explains our smpir signat of consc.</p>

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The global neuronal workspace &nbsp;opens up an internal space for thought experiments...

purely mental operations can be detached from the external world.

can keep it in mind for arbitr long. &nbsp;and can pass it on to any arbitr mental process</p>

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thus granting our brains the flexib that Descartes was seeking.</p>

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Once consc &nbsp;info can be pondered and reoritened at will.</p>

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brain ceaseless broadcasts... the Wm James &nbsp;stream of consc... uninterrupted flow.</p>

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Medical applications: &nbsp;COMA &nbsp;prognosis; &nbsp;locked in pts;

INFANTS consc.</p>

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IN SILICO consc...</p>

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