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Titolo:
TRANSIENT AND SUSTAINED COMPONENTS OF THE PUPIL RESPONSE EVOKED BY ACHROMATIC SPATIAL PATTERNS
Autore:
YOUNG RSL; KENNISH J;
Indirizzi:
TEXAS TECH UNIV,HLTH SCI CTR,DEPT OPHTHALMOL & VISUAL SCI LUBBOCK TX 79430 TEXAS TECH UNIV,DEPT PSYCHOL LUBBOCK TX 79430
Titolo Testata:
Vision research
fascicolo: 16, volume: 33, anno: 1993,
pagine: 2239 - 2252
SICI:
0042-6989(1993)33:16<2239:TASCOT>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
RETINAL GANGLION-CELLS; CONTRAST SENSITIVITY; VISION; PATHWAY; MACAQUES; CHANNELS; PARALLEL; MONKEY; COLOR;
Keywords:
PUPILLARY LIGHT REFLEX; PHASIC AND TONIC PATHWAYS; CONTRAST SENSITIVITY; SPATIAL VISION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
R.S.L. Young e J. Kennish, "TRANSIENT AND SUSTAINED COMPONENTS OF THE PUPIL RESPONSE EVOKED BY ACHROMATIC SPATIAL PATTERNS", Vision research, 33(16), 1993, pp. 2239-2252

Abstract

The present study provides new clues about visual processes underlying the human pupillary responses evoked by achromatic spatial patterns. The pupillary responses can be modeled as a combination of two processes, a temporally transient process which saturates with increasing contrast and a temporally sustained process which varies linearly with increasing grating contrast. The transient process has low-pass, whereas the sustained process has a middle band-pass spatial filter characteristic. The results support the hypothesis that the visual input to the pupillomotor nuclei is composed of phasic and tonic visual neurons that are functionally similar to those in the magno (M)- and parvo (P)-cellular layers in the lateral geniculate nucleus.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 10:03:53