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Title: [Effect of stimulation of the head of the caudate nucleus on the activity of posture muscles during development of the instrumental avoidance reflex]. Author: Shapovalova KB, Poltavets SP, Boĭko MI. Journal: Fiziol Zh SSSR Im I M Sechenova; 1982 Nov; 68(11):1488-99. PubMed ID: 7152049. Abstract: In chronic experiments on dags, instrumental avoidance reflexes associated with maintenance of a certain posture, revealed prevalence of inhibitory effect of preliminary low--frequency (2/ sec) stimulation of caudate nucleus' head in the right as well as left hemisphere on electromyographic and mechanographic components of the reflex actualizing its motor program. The most dramatic changes occurred in the posture components of the EMG which suggests the importance of the caudate nucleus' head for posture organization. The caudate nucleus' head is bilaterally involved in the pretriggering processes forerunning the instrumental reflex. At the same time, a difficulty in inhibition of resolving the instrumental task proper--avoidance of the electric current--was obvious in stimulation of the caudate nucleus' head in the system of instrumental avoidance reflexes.[Abstract] [Full Text] [Related] [New Search]