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首页> 外文期刊>The European Journal of Neuroscience >Regional cerebral blood flow changes associated with clitorally induced orgasm in healthy women.
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Regional cerebral blood flow changes associated with clitorally induced orgasm in healthy women.

机译：健康女性中与阴蒂诱发的性高潮相关的区域性脑血流量变化。

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There is a severe lack of knowledge regarding the brain regions involved in human sexual performance in general, and female orgasm in particular. We used [15O]-H2O positron emission tomography to measure regional cerebral blood flow (rCBF) in 12 healthy women during a nonsexual resting state, clitorally induced orgasm, sexual clitoral stimulation (sexual arousal control) and imitation of orgasm (motor output control). Extracerebral markers of sexual performance and orgasm were rectal pressure variability (RPstd) and perceived level of sexual arousal (PSA). Sexual stimulation of the clitoris (compared to rest) significantly increased rCBF in the left secondary and right dorsal primary somatosensory cortex, providing the first account of neocortical processing of sexual clitoral information. In contrast, orgasm was mainly associated with profound rCBF decreases in the neocortex when compared with the control conditions (clitoral stimulation and imitation of orgasm), particularly in the left lateral orbitofrontal cortex, inferior temporal gyrus and anterior temporal pole. Significant positive correlations were found between RPstd and rCBF in the left deep cerebellar nuclei, and between PSA and rCBF in the ventral midbrain and right caudate nucleus. We propose that decreased blood flow in the left lateral orbitofrontal cortex signifies behavioural disinhibition during orgasm in women, and that deactivation of the temporal lobe is directly related to high sexual arousal. In addition, the deep cerebellar nuclei may be involved in orgasm-specific muscle contractions while the involvement of the ventral midbrain and right caudate nucleus suggests a role for dopamine in female sexual arousal and orgasm.
机译：普遍缺乏关于涉及人类性行为的大脑区域的知识，尤其是女性性高潮。我们使用[15O] -H2O正电子发射断层扫描术来测量12名健康女性在非性静息状态，阴蒂诱发的性高潮，性阴蒂刺激（性唤起控制）和高潮模仿（运动输出控制）期间的局部脑血流量（rCBF）。 。脑性功能和性高潮的标志是直肠压力变异性（RPstd）和性唤起水平（PSA）。阴蒂的性刺激（相对于休息）显着增加了左继发和右背主躯体感觉皮层的rCBF，为新皮层处理性的阴蒂信息提供了先机。相比之下，与对照条件（气候刺激和性高潮的模仿）相比，高潮主要与新皮层的rCBF的大幅降低有关，尤其是在左侧眶额叶皮层，颞下回和颞前极。在左小脑深核中的RPstd和rCBF之间，以及在腹中脑和右尾状核中的PSA和rCBF之间存在显着的正相关。我们提出，女性高潮期间左外侧眼眶额叶皮层血流量减少表明行为抑制，而颞叶的失活与高性唤起直接相关。此外，深部小脑核可能参与了性高潮特定的肌肉收缩，而腹侧中脑和右尾状核的参与则暗示了多巴胺在女性性唤起和性高潮中的作用。

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