Glob (visual system)

Globs are millimeter-sized color modules found beyond the visual area V2 in the brain's color processing ventral (also known as parvocellular) pathway. They are scattered throughout the posterior inferior temporal cortex in an area called the V4 complex. They are clustered by color preference, and organized as color columns. They are the first part of the brain in which color is processed in terms of the full range of hues found in color space.

The term "glob" was proposed by Bevil Conway and Doris Tsao on an analogy with the cytochrome-oxidase blobs of V1, an earlier stage in the hierarchical elaboration of color. This also distinguishes them from other types of modules found elsewhere in the cerebral cortex such as face patches, and inferior temporal feature columns.