Processing of odor representations by neuronal circuits in the olfactory bulb.

Abstract:

:In order to analyze neuronal computations in the first olfactory processing center, the olfactory bulb, we measured odor-evoked activity patterns across large numbers of neurons within the intact olfactory bulb of zebrafish using optical and electrophysiological methods. We found that the olfactory bulb performs multiple computations including a decorrelation of overlapping inputs, a multiplexing of complementary information, and gain control. Patterns of olfactory bulb output activity are reorganized during the initial phase of an odor response, resulting in a partial loss of the topographic representation of molecular features and in the decorrelation of activity patterns evoked by similar stimuli. Physiological, pharmacological, and computational results provide initial insights into the mechanisms underlying these computations.

journal_name

Ann N Y Acad Sci

authors

Friedrich RW,Yaksi E,Judkewitz B,Wiechert MT

doi

10.1111/j.1749-6632.2009.04010.x

subject

Has Abstract

pub_date

2009-07-01 00:00:00

pages

293-7

eissn

0077-8923

issn

1749-6632

pii

NYAS04010

journal_volume

1170

pub_type

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