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SUMMARY:Adaptive Codes for flexible behaviour in the human brain. - Zoe Ko
 urtzi. Department of Psychology\, University of Cambridge
DTSTART:20150209T163000Z
DTEND:20150209T180000Z
UID:TALK56606@talks.cam.ac.uk
CONTACT:P.H. Marchington
DESCRIPTION:Adaptive shape coding for perceptual decision in the human bra
 in.\nAbstract.\nIn our search for neural codes\, we have uncovered neural 
 representations that reflect the structure of stimuli of variable complexi
 ty from simple features to objet categories.  However\, accumulating evide
 nce suggests an adaptive neural code that is dynamically shaped by experie
 nce to support flexible and efficient perceptual decisions.  Here\, we pre
 sent work showing that experience plays a critical role in moulding mid-le
 vel visual representations for perceptual decisions. Combining behavioral 
 and brain imaging measurements we demonstrate that learning optimizes feat
 ure binding for object recognition in cluttered scenes\, and tunes the neu
 ral representations of informative image parts to support efficient catego
 rical judgments. Our findings propose that similar learning mechanisms may
  mediate long-term optimization through development\, tune the visual syst
 em to fundamental principles of feature binding\, and optimize feature tem
 plates for perceptual decisions. \n
LOCATION:The Hodgkin Huxley Seminar Room\, Department of Physiology Develo
 pment and Neuroscience
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