Interblob region

Most cells of the interblob region respond to lines or bars of a particular orientation. They do not respond to color or show any color opponency. In contrast to the cells found inside the blobs, the receptive field of the cells found in the interblob region is very small. The response characteristic of the neurons of the interblob regions is arranged... 

VI mainly connects to area V2, which surrounds VI (Tov6e 1996). Area V2 seems to be organized into three types of stripes, the so-called thick, thin, and interstripes. The stripes seem to be used to process visual orientation (thick stripes), color (thin stripes), and retinal disparity (interstripes). Adjacent stripes respond to the same region of the visual field. Neurons of layer 4B of V1 connect to the thick stripes. Cells found inside the thick stripes are selective for orientation and movement. Many of the cells also respond to retinal disparity. The neurons of the blobs are connected to the thin stripes. These cells are not orientation selective. More than half of these cells respond to color. Most show a double opponent characteristic. The cells of the interblob region connect to the interstripes. Neurons of the interstripe region respond to different orientations but neither to color nor to motion. A condition know as chromatopsia is caused by damage to certain parts of VI and V2. Individuals who suffer from chromatopsia are not able to see shape or form. However, they are still able to see colors. 

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