Sci. Signal., 29 April 2008
Olfaction Distinctive Individual Smells
Science, AAAS, Cambridge CB2 1LQ, UK
Pheromones are critical for social communication in many animals. A lot of information about an animals status is represented in the complex pheromone components in urine. In mice, detection of such complex chemical signals by the vomeronasal organ (VNO) plays an important role in triggering endocrine changes and eliciting stereotyped innate behaviors. However, our mechanistic understanding of how VNO neurons encode information about sex and individuals is still far from complete. He et al. developed a system to probe neuronal receptor dynamics using genetically encoded fluorescent sensors. They observed distinct populations of VNO neurons that responded specifically to male and to female urine signals. Mouse strain and individual recognition was determined by combinatorial activation across a population of neurons. Such combinatorial activation was unique, allowing each individual animal to be discriminated and recognized.
Citation: P. Stern, Distinctive Individual Smells. Sci. Signal. 1, ec155 (2008).
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