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SUMMARY:A new look at gating: selective integration of sensory signals thr
 ough network dynamics - Professor Bill Newsome\, Stanford
DTSTART:20120626T120000Z
DTEND:20120626T130000Z
UID:TALK38492@talks.cam.ac.uk
CONTACT:John Mollon
DESCRIPTION:A hallmark of decision-making in primates is contextual sensit
 ivity: a given stimulus can lead to different decisions depending on the c
 ontext in which it is presented.  This kind of flexible decision-making de
 pends critically upon gating and integration of context-appropriate inform
 ation sources within the brain.  We have analyzed neural mechanisms underl
 ying gating and integration in animals trained to perform a context-sensit
 ive decision task.  Surprisingly\, both relevant and irrelevant sensory si
 gnals are present within frontal lobe circuits that form decisions\, imply
 ing that gating occurs very late in the process.  Dynamical systems analys
 is of the neural data\, combined with a dynamical recurrent network model\
 , suggests a novel mechanism in which gating and integration are combined 
 in a single process. 
LOCATION:Kenneth Craik Room\, Craik-Marshall Building\, Downing Site
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