BLOCK Ned CONSCIOUSNESS Dec 7 2012

NYU:  he's the Silver Profes.
(John Perry jokes abt  Gold Prof being next)

Partial report superiority

baars quote 1988

flash a stim  eg  an array like  MNXL
RTJS
KYGB  for only 50 ms

12 letter... feel like you see all the letters
but u can only name  3 or 4

George Sperling... cue a row

cue with audio tone  high med  low  indicates row... then subject
can recall 3 to 4 items in the cued row...

slide 2:   lego block like rectangeles  horiz or vert...
cue 4th  block...  then can  indicate whether it was  horiz or vertical...

explan... WM is the key to cognition....

if cue comes at end...  u are tapping an imagistic  memory  (rather than  a cognitive memory)

comparison to a lottery tcket... anybody can win but only one will.

theory:   middle tone  promotes the middle row from uncons to consc...

ATTN BLINK:

look for either  OXXO  or XOOX
or if  4 squares appear then   its a number....

if there was a first target,  then S will not see the second target....

STAN DEHAENE...

SD  intense  temp occip  activ can be accom  by NO consc  perception!!  stan de.

Subliminal  activ:  no reportability.. but does  facil priming....
feedfwd activ.

consc is  front with back brain

PRECONSC:   occip temp loops and local synchrony
priming at mult levels

many people think:  feedback loops are crucial to consc

key focus of this talk is this middle case:  preconsc...
ie priming at mult levels
only occiptemp loops and local synch
but no reportability while attn is occup elsewhere..

quotes Stan....2006...  we propose to call preconsc.... etc"

GWS global workspace

stan and j-p changeux  need ignition  broadcasting to GWS

percep mechs supply the repres....

Dan Dennett
Michael Cohen

the perfect experiment....

exptr...  sees  activ in V4  eg.. that indicate RED and yet S denies it

ned suggests this is actually an imperfect expt...

Adrian Owen and Steven Laureys  in persis veg state...

some pts  imagined playing tennis
imagine walking thru rooms in her house

is your father's name wm....

****  now he describes two cases... with unconsc  (or consc)

Anton's  syndrome... people claim they can see but they are really blind

Anosagnosia... paralyzed L arm  but thinks its ok

dialgoue   can u move ur l arm...  yes its fine...
(Anna Berti is investigaor)

anosognosia for hemiplegia...

Tony Marcel:   how well can you open a beer bottle; row a boat; tie shoes....

Katerina Fotopoulou  2010

he shows a number of anosognosia for hemiplegia  patients...

possiblility of consc exper without cognit accessibility is intelligile...

(Joe Parvizi asks abt dfn of consc)

*****

Inverse Anton's Syndrome:   denial of vision...

say a little window of sight in both eyes  a tiny crescent...

biz is buying and selling horses...

this is not blindsight... this is real form and color perception...

visual spatial extinction...
can see either L or right but not both...

can there be face experience w/o cog acces...

continuous flash suppression can make stuff go away...