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Titolo:
Pairing-induced changes of orientation maps in cat visual cortex
Autore:
Schuett, S; Bonhoeffer, T; Hubener, M;
Indirizzi:
Max Planck Inst Neurobiol, D-82152 Martinsried, Germany Max Planck Inst Neurobiol Martinsried Germany D-82152 rtinsried, Germany
Titolo Testata:
NEURON
fascicolo: 2, volume: 32, anno: 2001,
pagine: 325 - 337
SICI:
0896-6273(20011025)32:2<325:PCOOMI>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
LONG-TERM DEPRESSION; STRIATE CORTEX; MONOCULAR DEPRIVATION; SYNAPTIC PLASTICITY; OCULAR DOMINANCE; RECEPTIVE-FIELD; INTRACORTICAL INHIBITION; CORTICAL-NEURONS; RAT HIPPOCAMPUS; PYRAMIDAL CELLS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
65
Recensione:
Indirizzi per estratti:
Indirizzo: Hubener, M Max Planck Inst Neurobiol, D-82152 Martinsried, Germany Max Planck Inst Neurobiol Martinsried Germany D-82152 Germany
Citazione:
S. Schuett et al., "Pairing-induced changes of orientation maps in cat visual cortex", NEURON, 32(2), 2001, pp. 325-337

Abstract

We have studied the precise temporal requirements for plasticity of orientation preference maps in kitten visual cortex. Pairing a brief visual stimulus with electrical stimulation in the cortex, we found that the relative timing determines the direction of plasticity: a shift in orientation preference toward the paired orientation occurs if the cortex is activated first visually and then electrically; the cortical response to the paired orientation is diminished if the sequence of visual and electrical activation is reversed. We furthermore show that pinwheel centers are less affected by thepairing than the pinwheel surround. Thus, plasticity is not uniformly distributed across the cortex, and, most importantly, the same spike time-dependent learning rules that have been found in single-cell in vitro studies are also valid on the level of cortical maps.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/01/20 alle ore 11:45:27