Chapter

Microcircuits for Olfactory Information Processing in the Antennal Lobe of Manduca sexta

Lei Hong, Oland Lynne A, Riffell Jeffery A, Beyerlein Aaron and Hildebrand John G.

in Handbook of Brain Microcircuits

Published on behalf of Oxford University Press

Published in print August 2010 | ISBN: 9780195389883
Published online September 2012 | e-ISBN: 9780199965137 | DOI: http://dx.doi.org/10.1093/med/9780195389883.003.0042
Microcircuits for Olfactory Information Processing in the Antennal Lobe of Manduca sexta

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The antennal lobes (ALs) in the brain of the moth Manduca sexta have become well-established models for studies of olfactory information processing. This chapter summarizes findings about the functional organization of neural microcircuits and glial cells associated with glomeruli in the AL of Manduca. Glomerular output activity carried by uniglomerular projection neurons (uPNs) is shaped through integration of primary-afferent inputs, lateral and feed-forward inhibition by GABAergic local interneurons, and modulation by centrifugal neurons. Concerted action within AL circuitry enables uPNs to follow closely the spatiotemporal dynamics of stimuli in a natural odor plume. Synchronous firing of uPNs enhances the output of individual glomeruli and coding of behaviorally significant odors among glomeruli.

Chapter.  4344 words.  Illustrated.

Subjects: Development of the Nervous System

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