High-frequency transitions in cortical spike trains related to short-term memory.
Neuroscience
; 86(4): 1083-7, 1998 Oct.
Article
en En
| MEDLINE
| ID: mdl-9697115
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 are also consistent with theoretical models of short-term memory.
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Base de datos:
MEDLINE
Asunto principal:
Corteza Somatosensorial
/
Memoria a Corto Plazo
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Neuroscience
Año:
1998
Tipo del documento:
Article