[Transmission of information concerning image brightness by neurons of the lateral geniculate body in the cat].
The response of the LGB neurons to moving stimuli consisting of 8 bars with stepwise increasing luminousness (by 0.47 lg units) revealed threshold intensities varying from neuron to neuron by 1.5--2.0 lg units. Frequency of the on- and off-central neurons activity depended on stimuli luminousness. Both on- and off-neurons increased their firing rate on increase of the stimuli luminousness. The probable mechanism of information transmission of the luminousness change (with constant contrast) and its place in the hypothesis of the point-to-point image description at the subcortical level of the visual system, are discussed.
D000222:Adaptation, Physiological; D000818:Animals; D002415:Cats; D004594:Electrophysiology; D005829:Geniculate Bodies / Q000502:physiology*; D008027:Light; D009039:Motion Perception / Q000502:physiology*; D009435:Synaptic Transmission; D014795:Visual Pathways / Q000502:physiology; D014796:Visual Perception / Q000502:physiology*
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