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Electrophysiological study of the influence of subcortical structures on the photo evoked eyelid microvibration part 1. electrical stimulation and destruction


Journal of the Kansai Medical University 39(1): 45-76
Electrophysiological study of the influence of subcortical structures on the photo evoked eyelid microvibration part 1. electrical stimulation and destruction
The mechanism of photo-evoked eyelid microvibration (MV) was studied in unanesthetized rabbits by giving a series of electrical stimulation on the subcortical structures (such as caudate nucleus, globus pallidus, putamen, amygdaloid nucleus, hippocampus and ventrolateral nucleus of thalamus) or by destroying them electrically. Methods and results are given in detail. Five components were in the MV in response to the photic stimulation. They were named MV1, MV2, MV3, MV4 and MV5 and their peak latencies were 33.1, 44., 57.3, 70.0 and 83.0 msec, respectively. Intravenous injection of barbiturate (5 mg/kg) markedly suppressed MV. The effect of electrical stimulation of the subcortical structures was frequently reversed by the prior application of barbiturate.


Accession: 005349856



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