Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Synchronous oscillations in the cat retina
Autore:
Neuenschwander, S; Castelo-Branco, M; Singer, W;
Indirizzi:
Max Planck Inst Hirnforsch, D-60528 Frankfurt, Germany Max Planck Inst Hirnforsch Frankfurt Germany D-60528 Frankfurt, Germany
Titolo Testata:
VISION RESEARCH
fascicolo: 15, volume: 39, anno: 1999,
pagine: 2485 - 2497
SICI:
0042-6989(199907)39:15<2485:SOITCR>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
LATERAL GENICULATE-NUCLEUS; GANGLION-CELLS; MAINTAINED DISCHARGE; VISUAL-CORTEX; RESPONSES; SYNCHRONIZATION; SEGMENTATION; MECHANISMS; FREQUENCY;
Keywords:
correlation oscillatory synchronization; temporal code retina;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Neuenschwander, S Max Planck Inst Hirnforsch, Deutschordenstr 46, D-60528 Frankfurt, Germany Max Planck Inst Hirnforsch Deutschordenstr 46 FrankfurtGermany D-60528
Citazione:
S. Neuenschwander et al., "Synchronous oscillations in the cat retina", VISION RES, 39(15), 1999, pp. 2485-2497

Abstract

Retinal ganglion cells exhibit oscillatory responses which are precisely synchronized over large distances. Here we examined, with multi-electrode recordings, the time course of synchronization during spontaneous and stimulus-driven oscillatory activity. Spontaneous discharges showed synchronized oscillations at similar to 30 Hz, which were occasionally associated with slower superimposed oscillations in the range of 1-5 Hz. Stationary stimuli or moving gratings induced synchronous oscillations at higher frequencies (mean of 79.0 +/- 20.0 Hz for OFF- and 91.7 +/- 11.7 Hz for ON-responses), with time lags of a few milliseconds. At response onset, the first few oscillatory cycles were occasionally time locked to the stimulus. Thereafter, synchronization became independent of stimulus coordination and was exclusively due to neuronal interactions. Oscillatory modulation emerged rapidly and was sustained throughout the responses while oscillation frequency decreased gradually. This periodic patterning of responses persisted despite brief and local occlusion of stimuli, suggesting that synchronous oscillations emerge from population dynamics and entrain cells even if they are intermittently silenced. (C) 1999 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/07/20 alle ore 22:06:41