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Titolo:
Aging of the chromatic onset visual evoked potential
Autore:
Crognale, MA; Page, JW; Fuhrel, A;
Indirizzi:
Univ Nevada, Dept Psychol 296, Reno, NV 89557 USA Univ Nevada Reno NV USA89557 evada, Dept Psychol 296, Reno, NV 89557 USA
Titolo Testata:
OPTOMETRY AND VISION SCIENCE
fascicolo: 6, volume: 78, anno: 2001,
pagine: 442 - 446
SICI:
1040-5488(200106)78:6<442:AOTCOV>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
COLOR-VISION; CONTRAST SENSITIVITY; STRIATE CORTEX; LUMINANCE; RESPONSES; PATHWAY; INFANTS; NEURONS; STIMULI; MONKEY;
Keywords:
color; vision; visual evoked potential; visual evoked response; tritan;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Crognale, MA Univ Nevada, Dept Psychol 296, Reno, NV 89557 USA Univ Nevada Reno NV USA 89557 sychol 296, Reno, NV 89557 USA
Citazione:
M.A. Crognale et al., "Aging of the chromatic onset visual evoked potential", OPT VIS SCI, 78(6), 2001, pp. 442-446

Abstract

Purpose. To examine changes in the chromatic onset visual evoked potential(VEP) as a function of aging. Methods. VEP's were measured in response to chromatic sinusoidal gratings (1.0 and 0.5 cpd), selectively chosen to modulate the L-M channel and S - (L+M) channel and presented in onset-offset mode. Responses to achromatic gratings presented in a reversal mode were alsomeasured. Twenty subjects were tested, ranging in age from 21 to 93 years. Results. Unlike changes observed earlier in life, the general shape of thechromatic onset wave-form changed little with age; however, latencies increased significantly as a function of age. Amplitude changes revealed a decreasing trend that was not statistically significant. There was little change in the achromatic responses with age. Conclusions. Our results demonstrate a systematic slowing of the chromatic onset VEP with age. The gradual nature of the latency changes and the lack of dramatic and complex wave-form shape changes may allow development of age-based normative data for use in clinical settings.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/01/20 alle ore 14:54:04