Response of a human visual system to continuous color variation: An EEG-based approach

The results of a pilot study that included nineteen subjects with normal color vision indicate that mTRFs may be instrumental in characterizing the dorsal stream of the visual pathway. We conclude that pronounced local extrema observed in mTRFs should be attributed to the colors perceived by the participant rather than to the post-stimulus latencies. No interhemispheric asymmetry in mTRFs may be an evidence of a similar processing of color information by both cerebral hemispheres. On the other hand, observed dorsal dependence of mTRFs may suggest that different areas of the same hemisphere show stronger response to specific colors (hues) of the stimuli. The latter may indicate, for instance, differences in the functional “color specialization” between the occipital and frontal regions.