Abstract
Activity level was significantly reduced by self- or E-induced electrical stimulation of forebrain structures in 14 of 17 female rats. Recovery of activity level after cessation of stimulation was found in animals with electrodes in central hypothalamic areas but not in those with more anterior or posterior placements. There was no significant correlation between rate of self-stimulation and the estrous activity cycle. Possible explanations of the suppression of activity were discussed, and it was suggested that it might be related to inhibition of neural units normally responsive to circulating estrogen.
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6 articles.
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