The response to colour in the human visual cortex: the fMRI approach

Publication date: December 2019Source: Current Opinion in Behavioral Sciences, Volume 30Author(s): Kathy T MullenfMRI has been an important tool for understanding the functional organization of the human visual cortex for colour vision. Here I focus on three distinct approaches used in fMRI, each addressing a different question. Univariate measurements of BOLD amplitude responses have localized the areas of the human visual cortex with high colour responses. fMRI adaptation has the potential to define the selectivity (tuning) of the neural responses in these areas to colour in relation to achromatic responses or within the colour space. Finally, recent multivariate approaches specifically analyze the distributed nature of the responses to colour across voxel populations and have made important in-roads into understanding how colour is represented at voxel and subvoxel scales.

Source: Current Opinion in Behavioral Sciences - September 8, 2019 Category: Psychiatry & Psychology Source Type: research