Abstract
Publisher Summary This chapter describes the different aspects of central mechanism of vision. The transfer of the visual message at the dorsal nucleus of the lateral geniculate body and the modulation of color information at the central visual system are investigated. The lateral geniculate body is a prominent and well-defined thalamic nucleus with several distinct cell layers. Phylogenetically, this nucleus has been developed with the process of the encephalization of the visual function. The discharge rate in the pre- and postgeniculate neurons was expressed more quantitatively by the average frequency of response, which was determined by measuring the number of impulses in 300 or 600 ms from the onset or cessation of illumination. The applicability of the logical decision principle to the geniculate synapses can be also tested by comparing the spectral sensitivity curves of the pregeniculate and postgeniculate units. It is found that the responsiveness of radiation units to visual stimuli also changes with alteration in the animal's waking state.
Published Version
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