HapticV1, PubMed, Corpus, bibRecord, 001930

Patterned firing of parietal cells in a haptic working memory task.

Identifieur interne : 001930 ( PubMed/Corpus ); précédent : 001929; suivant : 001931

Patterned firing of parietal cells in a haptic working memory task.

Auteurs : M. Bodner ; M. Shafi ; Y-D Zhou ; J M Fuster

Source :

The European journal of neuroscience [ 0953-816X ] ; 2005.

RBID : pubmed:15932611

English descriptors

KwdEn :
- Action Potentials (physiology), Animals, Haplorhini, Memory, Short-Term (physiology), Nerve Net (cytology), Nerve Net (physiology), Neurons (physiology), Somatosensory Cortex (cytology), Somatosensory Cortex (physiology).
MESH :
- cytology : Nerve Net, Somatosensory Cortex.
- physiology : Action Potentials, Memory, Short-Term, Nerve Net, Neurons, Somatosensory Cortex.
- Animals, Haplorhini.

Abstract

Abstract Cells in the somatosensory cortex of the monkey are known to exhibit sustained elevations of firing frequency during the short-term mnemonic retention of tactile information in a haptic delay task. In this study, we examine the possibility that those firing elevations are accompanied by changes in firing pattern. Patterns are identified by the application of a pattern-searching algorithm to the interspike intervals of spike trains. By sequential use of sets of pattern templates with a range of temporal resolutions, we find patterned activity in the majority of the cells investigated. In general, the degree of patterning significantly increases during active memory. Surrogate analysis suggests that the observed patterns may not be simple linear stochastic functions of instantaneous or average firing frequency. Therefore, during the active retention of a memorandum, the activity of a 'memory cell' may be characterized not only by changes in frequency but also by changes in pattern.

DOI: 10.1111/j.1460-9568.2005.04085.x
PubMed: 15932611

Links to Exploration step

pubmed:15932611

Le document en format XML

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<author><name sortKey="Bodner, M" sort="Bodner, M" uniqKey="Bodner M" first="M" last="Bodner">M. Bodner</name>
<affiliation><nlm:affiliation>Neuropsychiatric Institute and Brain Research Institute, School of Medicine, University of California, Los Angeles, USA. mbodner@mindinstitute.net</nlm:affiliation>
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<author><name sortKey="Shafi, M" sort="Shafi, M" uniqKey="Shafi M" first="M" last="Shafi">M. Shafi</name>
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<author><name sortKey="Zhou, Y D" sort="Zhou, Y D" uniqKey="Zhou Y" first="Y-D" last="Zhou">Y-D Zhou</name>
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<author><name sortKey="Zhou, Y D" sort="Zhou, Y D" uniqKey="Zhou Y" first="Y-D" last="Zhou">Y-D Zhou</name>
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<term>Nerve Net (cytology)</term>
<term>Nerve Net (physiology)</term>
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<front><div type="abstract" xml:lang="en">Abstract Cells in the somatosensory cortex of the monkey are known to exhibit sustained elevations of firing frequency during the short-term mnemonic retention of tactile information in a haptic delay task. In this study, we examine the possibility that those firing elevations are accompanied by changes in firing pattern. Patterns are identified by the application of a pattern-searching algorithm to the interspike intervals of spike trains. By sequential use of sets of pattern templates with a range of temporal resolutions, we find patterned activity in the majority of the cells investigated. In general, the degree of patterning significantly increases during active memory. Surrogate analysis suggests that the observed patterns may not be simple linear stochastic functions of instantaneous or average firing frequency. Therefore, during the active retention of a memorandum, the activity of a 'memory cell' may be characterized not only by changes in frequency but also by changes in pattern.</div>
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<Month>07</Month>
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<DateRevised><Year>2007</Year>
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<JournalIssue CitedMedium="Print"><Volume>21</Volume>
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<Title>The European journal of neuroscience</Title>
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<ArticleTitle>Patterned firing of parietal cells in a haptic working memory task.</ArticleTitle>
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<Abstract><AbstractText>Abstract Cells in the somatosensory cortex of the monkey are known to exhibit sustained elevations of firing frequency during the short-term mnemonic retention of tactile information in a haptic delay task. In this study, we examine the possibility that those firing elevations are accompanied by changes in firing pattern. Patterns are identified by the application of a pattern-searching algorithm to the interspike intervals of spike trains. By sequential use of sets of pattern templates with a range of temporal resolutions, we find patterned activity in the majority of the cells investigated. In general, the degree of patterning significantly increases during active memory. Surrogate analysis suggests that the observed patterns may not be simple linear stochastic functions of instantaneous or average firing frequency. Therefore, during the active retention of a memorandum, the activity of a 'memory cell' may be characterized not only by changes in frequency but also by changes in pattern.</AbstractText>
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Patterned firing of parietal cells in a haptic working memory task.

Patterned firing of parietal cells in a haptic working memory task.

Source :

English descriptors

Abstract

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki