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Analysis of unit activity in the posterolateral thalamic associative nucleus

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Abstract

Unit activity of the posterolateral thalamic nucleus (PLN) in response to heteromodal afferent stimuli (visual, acoustic, somatic) was investigated in cats anesthetized with chloralose. Most spontaneously active cells responded to all stimuli, alone or in combination, by a clear biphasic complex consisting of excitatory and inhibitory periods in different orders; other neurons responded differently to the stimuli: either with an initial spike discharge or an increase and, sometimes, decrease in the frequency of spontaneous activity. Units discharging only at the time of application of the stimuli possessed marked model specificity and the property of integrating heteromodal effects, as reflected in a significant decrease in latency and a change in the discharge pattern in response to combined stimulation.

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  1. Laboratory of Physiology of the Motor Analyzer, Ukhtomskii Physiological Institute, Leningrad University, USSR

    L. A. Vasil'eva

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  1. L. A. Vasil'eva
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Vasil'eva, L.A. Analysis of unit activity in the posterolateral thalamic associative nucleus. Neurosci Behav Physiol 5, 119–126 (1972). https://doi.org/10.1007/BF01184619

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  • DOI: https://doi.org/10.1007/BF01184619

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