CYCLIC ACTIVITY IN SLEEP OF MACACA MULATTA.
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Biomedical subjects
Publications and source records attributed to E D WEITZMAN.
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A behavioral method is described in which increasing intensities of electric shocks were applied to the gasserian ganglia of alert monkeys. The animals were trained to press a lever to regulate the shock level. "Pain thresholds" were thereby obtained, and these thresholds were modified by varying the shock duration and by administration of morphine.
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