Preservation of retinal ganglion cells and normal patterns of retinogeniculate projections in prosimian primates with long-term ablations of striate cortex.

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Abstract

Retinal ganglion cell distributions and laminar patterns of retinogeniculate projections were studied in prosimian galagos after partial lesions of striate cortex in adults and survivals of 3 months to 3 years. In contrast to lesions in monkeys, where similar procedures led to a loss of ganglion cells and of projections to the parvocellular layers of the lateral geniculate nucleus, the striate cortex lesions in galagos produced no detectable loss of ganglion cells and no change in the laminar pattern of retinogeniculate terminations.