Tuning of cortical color mechanisms revealed using steady-state visually evoked potentials.

ABSTRACT: Color information is thought to enter the cortex via two dominant retinogeniculate pathways, one signaling teal to red, and the other violet to lime color variation. The cortex is thought to transform this representation, but the properties of human cortical color mechanisms are not very well understood. In four experiments, we characterized the tuning of cortical color mechanisms by measuring the intermodulation of steady-state visually evoked potentials (SSVEPs), thought to index the extent to which shared neural resources process stimuli flickering at different frequencies. Stimuli were isoluminant chromatic checkerboards where odd and even checks flickered at different frequencies. As hue dissimilarity between odd and even checks increased, the amplitude of an intermodulation component

SUBMITTER: Rozman A 

PROVIDER: S-EPMC12395283 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature