Induction of a physiological memory in the cerebral cortex by stimulation of the nucleus basalis - PubMed (original) (raw)

Induction of a physiological memory in the cerebral cortex by stimulation of the nucleus basalis

J S Bakin et al. Proc Natl Acad Sci U S A. 1996.

Abstract

Auditory cortical receptive field plasticity produced during behavioral learning may be considered to constitute "physiological memory" because it has major characteristics of behavioral memory: associativity, specificity, rapid acquisition, and long-term retention. To investigate basal forebrain mechanisms in receptive field plasticity, we paired a tone with stimulation of the nucleus basalis, the main subcortical source of cortical acetylcholine, in the adult guinea pig. Nucleus basalis stimulation produced electroencephalogram desynchronization that was blocked by systemic and cortical atropine. Paired tone/nucleus basalis stimulation, but not unpaired stimulation, induced receptive field plasticity similar to that produced by behavioral learning. Thus paired activation of the nucleus basalis is sufficient to induce receptive field plasticity, possibly via cholinergic actions in the cortex.

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Comment in

• Learning and receptive field plasticity.
  Gilbert CD. Gilbert CD. Proc Natl Acad Sci U S A. 1996 Oct 1;93(20):10546-7. doi: 10.1073/pnas.93.20.10546. Proc Natl Acad Sci U S A. 1996. PMID: 8855214 Free PMC article. No abstract available.

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