[1][2] The term "glob" was proposed by Bevil Conway and Doris Tsao[3][1] on an analogy with the cytochrome-oxidase blobs of V1, an earlier stage in the hierarchical elaboration of color.
[4] This also distinguishes them from other types of modules found elsewhere in the cerebral cortex such as face patches, and inferior temporal feature columns.
Neurons in adjacent glob cells have similar color tuning and form clusters that are arranged spatially within the cortex.
[3] The color-tuned neurons are arranged in color columns that are of a finer scale than single globs.
[1][5] However the neurons processing them in the retina, lateral geniculate nucleus, and V1 and V2 early parts of the visual cortex encode using the opponent process only a limited range of colors that does not reflect the dimensions of perceptual color space.