Retinotope

A so-called retinotopic map of the primary visual cortex shows that the center of the visual field is not on the inside of the left and right visual cortex, but on the outside.

As retinotopically refers to the property of the lateral geniculate nucleus (abbreviated as CGL - part of the thalamus divided into 6 layers), the information image faithfully in the visual cortex map, so that the topology of the retina activity is retained.

Neighboring fields or excitation patterns in the retina are mapped onto neighboring neurons in the brain. For example, looking at a star would generate an activity pattern in the brain that can be measured with PET or magnetic resonance imaging (MRT) , for example . The retinotopic property occurs three-dimensionally and unambiguously, ie every layer is retinotopic: Every location in the CGL corresponds to a location in the retina, neighboring locations in the retina are also neighboring in the CGL.

Individual evidence

1. ↑ ^{a b} M. B. Hoffmann, F. Kaule, R. Grzeschik, W. Behrens-Baumann, B. Wolynski: Retinotopic mapping of the human visual cortex with functional magnetic resonance imaging - Basics, current developments and perspectives for ophthalmology. (PDF; 527 kB) August 24, 2010, accessed on August 28, 2013 ( doi : 10.1055 / s-0029-1245625 ).