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How do context and attention affect S-cone signals in human V1?

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If you have a question about this talk, please contact John Mollon .

Color signals initiated in the short-wave-sensitive cones are anatomically independent until they reach visual cortex. The degree to which they participate in the different signal processing stages of the early visual system is therefore unclear. Here I describe a series of human neuroimaging experiments that examined the role of S-cone isolating signals in two relatively high-level visual functions: long-range contrast normalization and attentionally-driven signal modulation. The results expose fundamental differences in the way that S-cone signals are processed compared to achromatic luminance signals.

This talk is part of the Craik Club series.

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