美國萊斯大學(xué)發(fā)表在《神經(jīng)學(xué)雜志》上的一項(xiàng)新的研究發(fā)現(xiàn),人類社會(huì)情感(包括性)可通過汗液來傳遞,。賴斯大學(xué)心理學(xué)助理教授丹尼斯﹒陳對女性志愿者大腦如何處理和編碼來自男性汗液的性氣味做了研究,。結(jié)果發(fā)現(xiàn),,大腦對這些化學(xué)感應(yīng)的交流是有認(rèn)知的,包括汗液的性別信息,。
科學(xué)家很早就認(rèn)識(shí)到,,動(dòng)物靠氣味來進(jìn)行交流。這項(xiàng)研究擴(kuò)展了人類利用嗅覺作為視覺和聽覺一個(gè)補(bǔ)充的認(rèn)識(shí),?!?/p>
研究人員通過功能性磁共振對人類性別汗液作了研究。19名健康女性吸入了4種氣味對嗅覺進(jìn)行刺激,,其中包括從男性當(dāng)中收集的汗液,。
研究證明,大腦的幾個(gè)部位與嗅覺信息的情感處理有關(guān),。這些區(qū)域包括右側(cè)的紡錘區(qū),,右側(cè)的眼窩前額皮質(zhì)和右側(cè)的下丘腦。“除了下丘腦外,,紡錘區(qū)和眼窩前額皮質(zhì)與性動(dòng)機(jī)和性行為無關(guān),。”研究者說。“我們的研究結(jié)果說明,,來自人類汗液的性化學(xué)情感信息在大腦中的編碼很廣泛,,不只在與性活動(dòng)有關(guān)的特殊區(qū)域。”
人類的社會(huì)情感信息是在進(jìn)化的,。處理面部和聲音情感表達(dá)的神經(jīng)機(jī)制是不同的,。這一研究發(fā)現(xiàn)有助于我們了解人類社會(huì)化學(xué)信號(hào)的神經(jīng)機(jī)制。從神經(jīng)角度認(rèn)識(shí)人類嗅覺還處于初步階段,。這是首次采用功能性磁共振對人類社會(huì)化學(xué)信號(hào)所作的研究,。(生物谷Bioon.com)
生物谷推薦原始出處:
The Journal of Neuroscience, December 31, 2008, doi:10.1523/JNEUROSCI.3148-08.2008
Encoding Human Sexual Chemosensory Cues in the Orbitofrontal and Fusiform Cortices
Wen Zhou and Denise Chen
Psychology Department, Rice University, Houston, Texas 77005
Correspondence should be addressed to Denise Chen, Psychology Department MS25, Rice University, 6100 Main Street, Houston, TX 77005.
Chemosensory communication of affect and motivation is ubiquitous among animals. In humans, emotional expressions are naturally associated with faces and voices. Whether chemical signals play a role as well has hardly been addressed. Here, we use functional magnetic resonance imaging to show that the right orbitofrontal cortex, right fusiform cortex, and right hypothalamus respond to airborne natural human sexual sweat, indicating that this particular chemosensory compound is encoded holistically in the brain. Our findings provide neural evidence that socioemotional meanings, including the sexual ones, are conveyed in the human sweat.