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CATEGORIES:Craik Club
SUMMARY:A new look at gating: selective integration of sen
 sory signals through network dynamics - Professor 
 Bill Newsome\, Stanford
DTSTART;TZID=Europe/London:20120626T130000
DTEND;TZID=Europe/London:20120626T140000
UID:TALK38492AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/38492
DESCRIPTION:A hallmark of decision-making in primates is conte
 xtual sensitivity: a given stimulus can lead to di
 fferent decisions depending on the context in whic
 h it is presented.  This kind of flexible decision
 -making depends critically upon gating and integra
 tion of context-appropriate information sources wi
 thin the brain.  We have analyzed neural mechanism
 s underlying gating and integration in animals tra
 ined to perform a context-sensitive decision task.
   Surprisingly\, both relevant and irrelevant sens
 ory signals are present within frontal lobe circui
 ts that form decisions\, implying that gating occu
 rs very late in the process.  Dynamical systems an
 alysis of the neural data\, combined with a dynami
 cal recurrent network model\, suggests a novel mec
 hanism in which gating and integration are combine
 d in a single process. 
LOCATION:Kenneth Craik Room\, Craik-Marshall Building\, Dow
 ning Site
CONTACT:John Mollon
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