One nostril knows what the other learns

One nostril knows what the other learns

About 30% of the adult human population does not perceive an odour when sniffing the steroid androstenone (5- alpha -androst-16-en-3-one), but will become sensitive to its smell after repeated exposure to the compound. Here we investigate the origin of the plasticity that governs this acquired abili...

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Veröffentlicht in:Nature (London) 2002-10, Vol.419 (6909), p.802-802
Hauptverfasser: Mainland, Joel D., Bremner, Elizabeth A., Young, Natasha, Johnson, Brad N., Khan, Rehan M., Bensafi, Moustafa, Sobel, Noam
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Cognitive science
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container_end_page 802
container_issue 6909
container_start_page 802
container_title Nature (London)
container_volume 419
creator Mainland, Joel D.
Bremner, Elizabeth A.
Young, Natasha
Johnson, Brad N.
Khan, Rehan M.
Bensafi, Moustafa
Sobel, Noam
description About 30% of the adult human population does not perceive an odour when sniffing the steroid androstenone (5- alpha -androst-16-en-3-one), but will become sensitive to its smell after repeated exposure to the compound. Here we investigate the origin of the plasticity that governs this acquired ability by repeatedly exposing one nostril of non-detecting subjects to androstenone and then testing the unexposed nostril. We find that the exposed nostril and the naive nostril can both learn to recognize the smell, effectively doubling detection accuracy. As the two olfactory epithelia are not connected at the peripheral level, our results indicate that learning occurs in the brain by a mechanism that shares information from both nostrils.
doi_str_mv 10.1038/419802a
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title One nostril knows what the other learns
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