Abstract：
:Multiple unit activity (MUA) was recorded from the ventral tegmental area (VTA) and mesencephalic locomotor region (MLR) during copulatory behavior of freely moving male rats. Simultaneous accelerometric recordings of the copulatory pelvic thrusting performed by the male rat were taken to precisely correlate in time the changes in MUA with well defined elements of copulation. The baseline MUA firing rates recorded in the quiet-alert condition in the VTA and in the MLR were significantly increased during pursuit of the female by the male; significantly higher MUA firing rates were found in the VTA at the 500 ms periods before and during the execution of pelvic thrusting in mount, intromission, and ejaculation responses as compared to the baseline, and returned to this value when these responses ended. The maximum MUA firing rate in the MLR was obtained during the execution of pelvic thrusting in each copulatory response, and it remained significantly elevated, as compared to the baseline, after thrusting and at the postintromission and postejaculatory genital grooming, then decreasing to basal values at the initial part of the postejaculatory interval. The fact that the highest changes in MUA were related to pelvic thrusting suggests a major participation of both structures in the execution of motor copulatory responses.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Hernandez-Gonzalez M,Guevara MA,Morali G,Cervantes Mdoi
10.1016/s0031-9384(96)00367-8subject
Has Abstractpub_date
1997-02-01 00:00:00pages
285-91issue
2eissn
0031-9384issn
1873-507Xpii
S0031938496003678journal_volume
61pub_type
杂志文章abstract：:In Experiment I, neurosensory responses from three limbic areas in the cat brain were recorded when cats of differing defensive temperamental traits were exposed to species characteristic threat. The cats investigated were more or less defensive in response to rats and conspecific threat howls. The behavioral disposit...
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pub_type： 杂志文章
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journal_title：Physiology & behavior
pub_type： 杂志文章
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