ISSN:
1573-6873
Keywords:
olfaction
;
olfactory bulb
;
mitral/tufted cell
;
stereo electrode
;
multiday recording
;
chronic implant
;
awake behaving
;
distributed representation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Computer Science
,
Medicine
,
Physics
Notes:
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 186single neurons were obtained. Responses of individual neurons werefound to be quite variable over time, although this variability wasbelow chance and was not incremental. The responses of nearbyneurons were more similar than expected by chance but less similarthan individual neurons recorded at different times. However,responses of spatially well-separated neurons were more differentthan chance over short time periods. During rapid sniffing,single-unit responses became more variable, and the spatialorganization of responses became less apparent. These results suggestthat neuronal responses in the olfactory bulb are generally quitevariable over time, with this variability increasing during periodsof rapid sniffing. These results are interpreted in the context of adistributed, centrally modulated model of olfactoryprocessing.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008819818970
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