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SUMMARY:How do context and attention affect S-cone signals in human V1? - 
 Professor Alex Wade\, University of York
DTSTART:20111118T130000Z
DTEND:20111118T140000Z
UID:TALK33627@talks.cam.ac.uk
CONTACT:John Mollon
DESCRIPTION:Color signals initiated in the short-wave-sensitive cones are 
 anatomically independent until they reach visual cortex. The degree to whi
 ch they participate in the different signal processing stages of the early
  visual system is therefore unclear. Here I describe a series of human neu
 roimaging experiments that examined the role of S-cone isolating signals i
 n two relatively high-level visual functions: long-range contrast normaliz
 ation and attentionally-driven signal modulation. The results expose funda
 mental differences in the way that S-cone signals are processed compared t
 o achromatic luminance signals. 
LOCATION:Kenneth Craik Room\, Craik-Marshall Building\, Downing Site
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