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The Journal of Neuroscience, December 31, 2008, 28(53):14416-14421; doi:10.1523/JNEUROSCI.3148-08.2008

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Behavioral/Systems/Cognitive
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. Email: xdchen{at}rice.edu

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.

Key words: olfactory; chemosensory; fMRI; emotion; sex; human

Received July 7, 2008; revised Oct. 29, 2008; accepted Nov. 24, 2008.

Correspondence should be addressed to Denise Chen, Psychology Department MS25, Rice University, 6100 Main Street, Houston, TX 77005. Email: xdchen{at}rice.edu






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