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Learning‐related patterns of CA1 spike trains parallel stimulation parameters optimal for inducing hippocampal long‐term potentiation

Learning‐related patterns of CA1 spike trains parallel stimulation parameters optimal for... Recent studies have revealed 3 stimulation parameters that together comprise the temporal pattern of neuronal activation optimal for the induction of hippocampal LTP: high‐frequency bursts, activity 100–200 ms prior to a burst, and burst delivery in phase with the ongoing hippocampal theta rhythm. The present paper reports that these 3 aspects of patterned neural activity, collectively referred to as “theta‐bursting,” are characteristic of the spike trains of CA1 pyramidal cells in rats during the sampling and analysis of learning cues in an odor discrimination task and during performances of a spatial memory task. In contrast, theta‐bursting occurs relatively infrequently during behavioral events less directly related to task‐relevant mnemonic processing. These findings suggest that the optimal conditions for the induction of LTP occur naturally in behaving animals, time‐locked to behavioral events critical to learning. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Hippocampus Wiley

Learning‐related patterns of CA1 spike trains parallel stimulation parameters optimal for inducing hippocampal long‐term potentiation

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References (62)

Publisher
Wiley
Copyright
Copyright © 1991 Wiley Subscription Services
ISSN
1050-9631
eISSN
1098-1063
DOI
10.1002/hipo.450010206
pmid
1669292
Publisher site
See Article on Publisher Site

Abstract

Recent studies have revealed 3 stimulation parameters that together comprise the temporal pattern of neuronal activation optimal for the induction of hippocampal LTP: high‐frequency bursts, activity 100–200 ms prior to a burst, and burst delivery in phase with the ongoing hippocampal theta rhythm. The present paper reports that these 3 aspects of patterned neural activity, collectively referred to as “theta‐bursting,” are characteristic of the spike trains of CA1 pyramidal cells in rats during the sampling and analysis of learning cues in an odor discrimination task and during performances of a spatial memory task. In contrast, theta‐bursting occurs relatively infrequently during behavioral events less directly related to task‐relevant mnemonic processing. These findings suggest that the optimal conditions for the induction of LTP occur naturally in behaving animals, time‐locked to behavioral events critical to learning.

Journal

HippocampusWiley

Published: Jan 2, 1991

Keywords: ; ; ; ;

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