| Budget Amount *help |
¥4,410,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥810,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2006: ¥900,000 (Direct Cost: ¥900,000)
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| Research Abstract |
When being given a pair of odors of sexually active males and estrous females, sexually mature male rats show vigorous exploration toward the estrous odors while receptive female rats palpably prefer for sexual male odors to estrous odors. This sex difference in olfactory preference may reflect their sexual orientation. Our earlier studies of this project showed that those sexual dimorphic olfactory preferences are based on sensory signals received by the olfactory epithelium (OE) but not by the vomeronasal organ (VNO) which is believed to be involved in pheromonal perception. In the brain, we elucidated that olfactory preference of male rats is critically regulated in the medial preoptic area that receives olfactory signals through multiple pathways, including the amygdala nuclei.
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