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Science 29 May 1992:
Vol. 256. no. 5061, pp. 1313 - 1315
DOI: 10.1126/science.1598574
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Articles

Science, Vol 256, Issue 5061, 1313-1315
Copyright © 1992 by American Association for the Advancement of Science

articles

Functional specialization of olfactory glomeruli in a moth

BS Hansson, H Ljungberg, E Hallberg, and C Lofstedt

Department of Ecology, Lund University, Sweden.

The specific function of the glomerular structures present in the antennal lobes or olfactory bulbs of organisms ranging from insects to humans has been obscure because of limitations in neuronal marking methods. By tracing individual neurons in the moth Agrotis segetum, it was determined that physiologically distinct types of pheromone receptor neurons project axons to different regions of the macroglomerular complex (MGC). Each glomerulus making up the MGC has a specific functional identity, initially processing information about one specific pheromone component. This indicates that, at least through the first stage of synapses, olfactory information moves through labeled lines.


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