Author:
AUTRUSSEAU FLORENT,SHEVELL STEVEN K.
Abstract
Temporally varying chromatic-inducing light was used to infer
receptive-field organization. Time-varying shifts in color appearance
within a test field were induced by a surrounding chromatic pattern; the
shifts were then nulled by adding a time-varying stimulus to the test area
so the observer perceived a steady test. This method measured chromatic
induction without requiring an observer to judge the color appearance of
the test. The induced color shifts were consistent with a
+s/−s spatially antagonistic neural receptive
field, which also accounts for color shifts induced by static chromatic
patterns (Monnier & Shevell, 2003, Monnier
& Shevell, 2004). The response of this type
of receptive-field, which is found only in the visual cortex, increases
with S-cone stimulation at its center and decreases with S-cone
stimulation within its surround. The measurements also showed a negligible
influence of temporal inducing frequency in the range 0.5–4 Hz.
Publisher
Cambridge University Press (CUP)
Subject
Sensory Systems,Physiology
Cited by
4 articles.
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