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Encoding Pheromonal Signals in the Accessory Olfactory Bulb of Behaving Mice
Minmin Luo,1*Michale S. Fee,2Lawrence C. Katz1
Many mammalian species rely on
pheromones--semiochemicals produced by other members of the same
species--to communicate socialstatus and reproductive readiness. To
assess how the central nervoussystem integrates the complex repertoire
of pheromones, we recordedfrom single neurons in the accessory
olfactory bulb, a nucleusthat processes pheromonal signals, of male
mice engaged in naturalbehaviors. Neuronal firing was robustly
modulated by physicalcontact with male and female conspecifics, with
individual neuronsactivated selectively by specific combinations of
the sex andstrain of conspecifics. We infer that mammals encode social
andreproductive information by integrating vomeronasal sensory
activityspecific to sex and genetic makeup.
1 Howard Hughes Medical Institute and
Department of Neurobiology, Duke University Medical Center, Durham, NC
27710, USA.
2 Biological Computation Research
Department, Bell Laboratories, Lucent Technologies, Murray Hill, NJ
07974, USA.
*
To whom correspondence should be addressed. E-mail:
luo{at}neuro.duke.edu
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