retinotopic map

retinotopic map 

Term referring to the fact that the precise spatial arrangement of the retina is maintained throughout the visual pathway. See lateral geniculate bodies; visual pathway.
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This area does not display the same cortical magnification as the primary visual cortex but it still maintains a retinotopic map of the visual scene in order to allow appropriate processing of signals.
As a consequence, the retinotopic map in the brain must undergo comparable rearrangements to accommodate inputs from new ommatidia sampling visual space in front of the animal.
Therefore, determining the retinal location of all added ommatidia may help us to understand how subunits of the optic nerve (2) develop and how retinotopic maps form in the central visual pathways (lamina and medulla) of the brain (3).