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Titolo:
EFFECTS OF SPATIAL SELECTIVE ATTENTION ON THE STEADY-STATE VISUAL-EVOKED POTENTIAL IN THE 20-28 HZ RANGE
Autore:
MULLER MM; PICTON TW; VALDESSOSA P; RIERA J; TEDERSALEJARVI WA; HILLYARD SA;
Indirizzi:
UNIV KONSTANZ,DEPT PSYCHOL,POB 5560 D-78434 CONSTANCE GERMANY UNIV TORONTO,ROTMAN RES INST TORONTO ON CANADA CUBAN NEUROSCI CTR HAVANA CUBA UNIV CALIF SAN DIEGO,DEPT NEUROSCI SAN DIEGO CA 92103
Titolo Testata:
Cognitive brain research
fascicolo: 4, volume: 6, anno: 1998,
pagine: 249 - 261
SICI:
0926-6410(1998)6:4<249:EOSSAO>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
BRAIN;
Keywords:
STEADY-STATE VISUAL EVOKED POTENTIAL; EEG; SPATIAL ATTENTION; SOURCE LOCALIZATION; VARETA; VISUAL CORTEX;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
45
Recensione:
Indirizzi per estratti:
Citazione:
M.M. Muller et al., "EFFECTS OF SPATIAL SELECTIVE ATTENTION ON THE STEADY-STATE VISUAL-EVOKED POTENTIAL IN THE 20-28 HZ RANGE", Cognitive brain research, 6(4), 1998, pp. 249-261

Abstract

Steady-state visual evoked potentials (SSVEPs) were recorded from thescalp of subjects who attended to a flickering LED display in one visual field while ignoring a similar display (flickering at a different frequency) in the opposite visual field. The flicker frequencies were 20.8 Hz in the left-field display and 27.8 Hz in the right-field display. The SSVEP to the flicker in either field was enhanced in amplitudewhen attention was directed to its location. The scalp distribution of this SSVEP enhancement was narrowly focused over the posterior scalpcontralateral to the visual field of stimulation. A source analysis using Variable Resolution Electromagnetic Tomography (VARETA) indicatedthat the source current densities for the SSVEP attention effect had a focal origin in the contralateral parieto-occipitaI cortex. (C) 1998Elsevier Science B.V.

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Documento generato il 29/11/20 alle ore 04:56:07