Learning, aging and intrinsic neuronal plasticity

John F. Disterhoft*, M. Matthew Oh

*Corresponding author for this work

Research output: Contribution to journalReview article

154 Scopus citations

Abstract

In vitro experiments indicate that intrinsic neuronal excitability, as evidenced by changes in the post-burst afterhyperpolarization (AHP) and spike-frequency accommodation, is altered during learning and normal aging in the brain. Here we review these studies, highlighting two consistent findings: (i) that AHP and accommodation are reduced in pyramidal neurons from animals that have learned a task; and (ii) that AHP and accommodation are enhanced in pyramidal neurons from aging subjects, a cellular change that might contribute to age-related learning impairments. Findings from in vivo single-neuron recording studies complement the in vitro data. From these consistently reproduced findings, we propose that the intrinsic AHP level might determine the degree of synaptic plasticity and learning. Furthermore, it seems that reductions in the AHP must occur before learning if young and aging subjects are to learn a task successfully.

Original languageEnglish (US)
Pages (from-to)587-599
Number of pages13
JournalTrends in Neurosciences
Volume29
Issue number10
DOIs
StatePublished - Oct 1 2006

ASJC Scopus subject areas

  • Neuroscience(all)

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