Multiday recordings from olfactory bulb neurons in awake freely moving rats: spatially and temporally organized variability in odorant response properties

Bhalla, Upinder S. ; Bower, James M. (1997) Multiday recordings from olfactory bulb neurons in awake freely moving rats: spatially and temporally organized variability in odorant response properties Journal of Computational Neuroscience, 4 (3). pp. 221-256. ISSN 0929-5313

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Official URL: http://www.springerlink.com/content/gq8r207463hp41...

Related URL: http://dx.doi.org/10.1023/A:1008819818970

Abstract

Chronic single-unit recordings were obtained from the mitral celllayer of the olfactory bulbs of awake freely moving rats placed in anodorant stream. Over periods up to five days, 618 recordings from 186 single neurons were obtained. Responses of individual neurons were found to be quite variable over time, although this variability was below chance and was not incremental. The responses of nearby neurons were more similar than expected by chance but less similar than individual neurons recorded at different times. However, responses of spatially well-separated neurons were more different than chance over short time periods. During rapid sniffing, single-unit responses became more variable, and the spatial organization of responses became less apparent. These results suggest that neuronal responses in the olfactory bulb are generally quite variable over time, with this variability increasing during periods of rapid sniffing. These results are interpreted in the context of a distributed, centrally modulated model of olfactory processing.

Item Type:Article
Source:Copyright of this article belongs to Springer-Verlag.
Keywords:Olfaction; Olfactory Bulb; Mitral; Tufted Cell; Stereo Electrode; Multiday Recording; Chronic Implant; Awake Behaving; Distributed Representation
ID Code:4394
Deposited On:18 Oct 2010 14:14
Last Modified:16 May 2011 15:54

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