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SUMMARY:Inferring neural tuning from visual aftereffects - Katherine Storr
 s (Cognitive\, Perceptual and Brain Sciences Department\, UCL)
DTSTART:20140430T120000Z
DTEND:20140430T130000Z
UID:TALK51735@talks.cam.ac.uk
CONTACT:John Mollon
DESCRIPTION:Visual aftereffects between faces or other objects may provide
  a valuable tool to explore the number and tuning of neural channels that 
 encode complex stimulus dimensions. Based on face aftereffect data\, sever
 al groups have proposed that the dimensions underlying judgements of facia
 l gender and identity are encoded by two-channel opponent mechanisms. I wi
 ll show that changes in the appearance of adapting stimuli\, often conside
 red evidence for opponent mechanisms\, can arise in several different enco
 ding schemes\, and argue that more diagnostic psychophysical tests suggest
  that multiple narrowly tuned channels underlie facial judgements.
LOCATION:Kenneth Craik Room\, Craik-Marshall Building\, Downing Site
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