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Science 7 October 1988:
Vol. 242. no. 4875, pp. 74 - 77
DOI: 10.1126/science.2902687
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Articles
Science, Vol 242, Issue 4875, 74-77
Copyright © 1988 by American Association for the Advancement of Science
Pharmacological induction of use-dependent receptive field modifications in the visual cortex
JM Greuel,
HJ Luhmann,
and
W Singer
Troponwerke, Department of Neurobiology, Koln, Federal Republic of Germany.
Lasting modifications of the receptive fields of neurons in the visual cortex can be induced by pairing visual stimuli with iontophoretic application of the neuromodulators acetylcholine and noradrenaline or the excitatory amino acids N-methyl-D-aspartate (NMDA) and L-glutamate. The modifications are obtained in less than 1 hour and persist for more than 40 minutes. Thus, acetylcholine and norepinephrine have a permissive role in use-dependent neuronal plasticity. These results support the notion of a postsynaptic threshold for neuronal malleability that differs from that of sodium-dependent action potentials.
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