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Titolo:
EFFECTS OF AGING ON EVENT-RELATED BRAIN POTENTIALS (ERPS) IN A VISUALDETECTION TASK
Autore:
KUTAS M; IRAGUI V; HILLYARD SA;
Indirizzi:
UNIV CALIF SAN DIEGO,DEPT COGNIT SCI LA JOLLA CA 92093 UNIV CALIF SAN DIEGO,DEPT NEUROSCI LA JOLLA CA 92093
Titolo Testata:
Electroencephalography and clinical neurophysiology
fascicolo: 2, volume: 92, anno: 1994,
pagine: 126 - 139
SICI:
0013-4694(1994)92:2<126:EOAOEB>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
AGE-RELATED-CHANGES; SELECTIVE ATTENTION; EVOKED-POTENTIALS; P300 LATENCY; STIMULUS PROBABILITY; GLUCOSE-UTILIZATION; AUDITORY-STIMULI; REACTION-TIME; INFORMATION; COMPONENTS;
Keywords:
EVENT-RELATED POTENTIALS; VISUAL DETECTION TASK; AGE-RELATED EFFECTS; P3; LATE POSITIVE COMPLEX;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
84
Recensione:
Indirizzi per estratti:
Citazione:
M. Kutas et al., "EFFECTS OF AGING ON EVENT-RELATED BRAIN POTENTIALS (ERPS) IN A VISUALDETECTION TASK", Electroencephalography and clinical neurophysiology, 92(2), 1994, pp. 126-139

Abstract

Event-related brain potentials (ERPs) were recorded from 74 subjects (45 men) between 18 and 82 years of age in a simple visual detection task. On each trial the subject reported the location of a triangular flash of light presented briefly 20-degrees laterally to the left or right visual field or to both fields simultaneously. ERPs to targets exhibited a similar morphology including P1, N1, P2, N2, and P3 components across all age groups. The principal effects of advancing age were (1) a marked reduction in amplitude of the posterior Pl component (75-150 latency) together with an amplitude increase of an anterior positivity at the same latency; (2) an increase in amplitude of the P3 component that was most prominent over frontal scalp areas; and (3) a linearincrease in P3 peak latency. These results extend the findings of age-related changes in P3 peak latency and distribution to a non-oddball task in the visual modality and raise the possibility that short-latency ERPs may index changes in visual attention in the elderly.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 08:50:18