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Titolo:
Does corticothalamic feedback control cortical velocity tuning?
Autore:
Hillenbrand, U; van Hemmen, JL;
Indirizzi:
Tech Univ Munich, Dept Phys, D-85747 Garching, Germany Tech Univ Munich Garching Germany D-85747 hys, D-85747 Garching, Germany
Titolo Testata:
NEURAL COMPUTATION
fascicolo: 2, volume: 13, anno: 2001,
pagine: 327 - 355
SICI:
0899-7667(200102)13:2<327:DCFCCV>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
LATERAL GENICULATE-NUCLEUS; CAT VISUAL-CORTEX; RECEPTIVE-FIELD PROPERTIES; MEDIATING EXCITATORY INPUT; PIG THALAMIC NEURONS; SIMPLE CELLS; DIRECTION SELECTIVITY; ELECTROPHYSIOLOGICAL PROPERTIES; STRIATE CORTEX; X-CELLS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Engineering, Computing & Technology
Citazioni:
87
Recensione:
Indirizzi per estratti:
Indirizzo: Hillenbrand, U Tech Univ Munich, Dept Phys, D-85747 Garching, Germany TechUniv Munich Garching Germany D-85747 rching, Germany
Citazione:
U. Hillenbrand e J.L. van Hemmen, "Does corticothalamic feedback control cortical velocity tuning?", NEURAL COMP, 13(2), 2001, pp. 327-355

Abstract

The thalamus is the major gate to the cortex, and its contribution to cortical receptive field properties is well established. Cortical feedback to the thalamus is, in turn, the anatomically dominant input to relay cells, yet its influence on thalamic processing has been difficult to interpret. Foran understanding of complex sensory processing, detailed concepts of the corticothalamic interplay need to be established. To study corticogeniculateprocessing in a model, we draw on various physiological and anatomical data concerning the intrinsic dynamics of geniculate relay neurons, the cortical influence on relay modes, lagged and nonlagged neurons, and the structure of visual cortical receptive fields. In extensive computer simulations, we elaborate the novel hypothesis that the visual cortex controls via feedback the temporal response properties of geniculate relay cells in a way thatalters the tuning of cortical cells for speed.

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Documento generato il 19/01/20 alle ore 20:20:49