Symmetric temporal patterns in cortical spike trains during performance of a short-term memory task

Mark Bodner, Yong Di Zhou, Gordon L. Shaw, Joaquin M. Fuster

Research output: Contribution to journalArticle

Abstract

The trion model is a highly structured representation of cortical organization, which predicts families of symmetric spatial-temporal firing patterns inherent in cortical activity. The symmetries of these inherent firing patterns are used by the brain in short-term memory to perform higher level computations. In the present study, symmetric temporal patterns were searched for in spike trains recorded from cells in parietal cortex of a monkey performing a short-term memory task. A new method of analysis was used to map neuronal firing into sequences of integers representing relative levels of firing rate about the mean (i.e. -1, 0 and 1). The results of this analysis show families of patterns related by symmetry operations. These operations are: i. the interchanging of all the + 1's and - 1's in a given pattern sequence (C symmetry), ii. the inverting of the temporal sequence of the mapping (T symmetry), and ill the combination of the two previous operations (CT symmetry). Patterns of a given family are found across cells, especially in the memory periods of the task; in most cases they reoccur within a given spike train. The pattern families predicted by the model and reported here should be further investigated in multiple microelectrode and EEG recordings.

Original languageEnglish (US)
Pages (from-to)509-514
Number of pages6
JournalNeurological Research
Volume19
Issue number5
StatePublished - 1997
Externally publishedYes

Fingerprint

Short-Term Memory
Parietal Lobe
Microelectrodes
Haplorhini
Electroencephalography
Brain

Keywords

  • EEG
  • Monkeys
  • Short-term memory
  • Spike trains
  • Symmetry
  • Temporal patterns

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

Cite this

Bodner, M., Zhou, Y. D., Shaw, G. L., & Fuster, J. M. (1997). Symmetric temporal patterns in cortical spike trains during performance of a short-term memory task. Neurological Research, 19(5), 509-514.

Symmetric temporal patterns in cortical spike trains during performance of a short-term memory task. / Bodner, Mark; Zhou, Yong Di; Shaw, Gordon L.; Fuster, Joaquin M.

In: Neurological Research, Vol. 19, No. 5, 1997, p. 509-514.

Research output: Contribution to journalArticle

Bodner, M, Zhou, YD, Shaw, GL & Fuster, JM 1997, 'Symmetric temporal patterns in cortical spike trains during performance of a short-term memory task', Neurological Research, vol. 19, no. 5, pp. 509-514.
Bodner, Mark ; Zhou, Yong Di ; Shaw, Gordon L. ; Fuster, Joaquin M. / Symmetric temporal patterns in cortical spike trains during performance of a short-term memory task. In: Neurological Research. 1997 ; Vol. 19, No. 5. pp. 509-514.
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