狂野?关于大脑皮层在人类性活动中的作用。

Socioaffective neuroscience & psychology Pub Date : 2012-03-15 eCollection Date: 2012-01-01 DOI:10.3402/snp.v2i0.17337
Janniko R Georgiadis
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引用次数: 16

摘要

背景:我们喜欢认为性行为是固定的、基本的和原始的。然而,这似乎并没有完全反映现实。即使当我们享受性爱的时候,我们也可能有能力思考、交谈、自愿推迟性高潮等等。这可能表明,性活动的中央控制机制相当灵活,容易受到学习机制的影响,大脑皮层区域起着关键作用。目的:本研究旨在确定那些与性活动最一致的皮质区域和机制。设计:全面回顾人类功能性神经影像学文献的性活动,即生殖器刺激和性高潮,是作出。结果:外阴刺激不仅激活了经典的体感基质,而且还激活了远不止于此的区域。后脑岛对于处理来自阴茎充盈的输入和协调阴茎反应可能特别重要。纹层外视觉皮层跟踪性唤起并对生殖器刺激作出反应,即使受试者闭上眼睛。腹内侧前额叶皮层也与性唤起紧密相连,但该区域的低活动预示着高性唤起。结论:这篇综述指出了皮质部位的活动被触觉生殖器流入和高性唤起所调节。讨论了行为影响,并在可能的情况下指出了与学习机制的相关性。总的来说,很明显大脑皮层对性行为有一定的影响。
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Doing it … wild? On the role of the cerebral cortex in human sexual activity.

Background: We like to think about sexual activity as something fixed, basic and primal. However, this does not seem to fully capture reality. Even when we relish sex, we may be capable of mentalizing, talking, voluntarily postponing orgasm, and much more. This might indicate that the central control mechanisms of sexual activity are quite flexible and susceptible to learning mechanisms, and that cortical brain areas play a critical part.

Objective: This study aimed to identify those cortical areas and mechanisms most consistently implicated in sexual activity.

Design: A comprehensive review of the human functional neuroimaging literature on sexual activity, i.e. genital stimulation and orgasm, is made.

Results: Genital stimulation recruits the classical somatosensory matrix, but also areas far beyond that. The posterior insula may be particularly important for processing input from the engorged penis and coordinating penile responses. Extrastriate visual cortex tracks sexual arousal and responds to genital stimulation even when subjects have their eyes closed. The ventromedial prefrontal cortex is also tightly coupled to sexual arousal, but low activity in this area predicts high sexual arousal.

Conclusion: This review has indicated cortical sites where activity is moderated by tactile genital inflow and high sexual arousal. Behavioral implications are discussed and where possible the relevance for learning mechanisms is indicated. Overall, it is clear that the cerebral cortex has something to say about sexual activity.

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