Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
A model of visual cortical temporal frequency tuning
Autore:
Krukowski, AE; Troyer, TW; Miller, KD;
Indirizzi:
Univ Calif San Francisco, WM Keck Ctr Integrat Neurosci, Sloan Ctr TheoretNeurobiol, Dept Physiol,Grad Grp Biophys, San Francisco, CA 94143 USA Univ Calif San Francisco San Francisco CA USA 94143 ancisco, CA 94143 USA
Titolo Testata:
NEUROCOMPUTING
, volume: 38, anno: 2001,
pagine: 1379 - 1383
SICI:
0925-2312(200106)38:<1379:AMOVCT>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
LATERAL GENICULATE-NUCLEUS; CELL RECEPTIVE-FIELDS; NMDA RECEPTORS; RAT NEOCORTEX; CORTEX; CAT; RESPONSES; NEURONS; INPUT;
Keywords:
NMDA; LGN; striate cortex; inhibition; cat;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Krukowski, AE NASA, Ames Res Ctr, Mail Stop 262-2, Moffett Field, CA 94035USA NASA Mail Stop 262-2 Moffett Field CA USA 94035 CA 94035 USA
Citazione:
A.E. Krukowski et al., "A model of visual cortical temporal frequency tuning", NEUROCOMPUT, 38, 2001, pp. 1379-1383

Abstract

There are several response properties that distinguish cortical simple cells of cat Vf. layer 4 from the geniculate cells that provide their input. We have recently demonstrated that a developmentally motivated pattern of intracortical inhibition, in conjunction with the observed pattern of geniculocortical connections, can robustly account for the contrast-invariance of simple cell orientation tuning. We now show that this same model circuit unexpectedly accounts for the low-pass shift in the temporal frequency tuningcurves of cortical cells relative to geniculate cells. This arises when NMDA-mediated excitatory conductances are included in the thalamocortical synapses, at levels observed experimentally. (C) 2001 Published by Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 16:06:43