High-frequency transitions in cortical spike trains related to short-term memory
Identifieur interne : 009071 ( Main/Merge ); précédent : 009070; suivant : 009072High-frequency transitions in cortical spike trains related to short-term memory
Auteurs : M. Bodner [États-Unis] ; Y.-D. Zhou [États-Unis] ; J. M. Fuster [États-Unis]Source :
- Neuroscience [ 0306-4522 ] ; 1998.
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- Pascal (Inist)
- Wicri :
- topic : Singe.
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- KwdEn :
Abstract
Single-unit spike trains recorded from parietal cortex of monkeys performing a tactile short-term memory task show characteristic fluctuations (transitions) in their firing frequency that are related to memory. Spike trains recorded during the memory period. when the animal must retain information for the short term, show a higher rate of such transitions than spike trains recorded during intertrial baseline periods. In the present study, an analysis of multiple temporal resolutions over which these transitions are observed reveals that the memory-related transitions occur most prominently in the 25 50 Hz range. The results of this study suggest that. in the monkey. high frequency fluctuations of neuronal discharge in the parietal cortex are correlated with haptic short-term memory. The presence of such fluctuations arc also consistent with theoretical models of short-term memory.
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Pascal:98-0401338Le document en format XML
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<front><div type="abstract" xml:lang="en">Single-unit spike trains recorded from parietal cortex of monkeys performing a tactile short-term memory task show characteristic fluctuations (transitions) in their firing frequency that are related to memory. Spike trains recorded during the memory period. when the animal must retain information for the short term, show a higher rate of such transitions than spike trains recorded during intertrial baseline periods. In the present study, an analysis of multiple temporal resolutions over which these transitions are observed reveals that the memory-related transitions occur most prominently in the 25 50 Hz range. The results of this study suggest that. in the monkey. high frequency fluctuations of neuronal discharge in the parietal cortex are correlated with haptic short-term memory. The presence of such fluctuations arc also consistent with theoretical models of short-term memory.</div>
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