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Titolo:
EXPRESS SACCADES AND VISUAL-ATTENTION
Autore:
FISCHER B; WEBER H;
Indirizzi:
UNIV FREIBURG,DEPT NEUROPHYSIOL W-7800 FREIBURG GERMANY
Titolo Testata:
Behavioral and brain sciences
fascicolo: 3, volume: 16, anno: 1993,
pagine: 553 - 567
SICI:
0140-525X(1993)16:3<553:ESAV>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
FRONTAL EYE-FIELD; PARIETAL ASSOCIATION CORTEX; MONKEY SUPERIOR COLLICULUS; SHORT REACTION-TIMES; HAND-COORDINATION; GUIDED SACCADES; WARNING SIGNALS; PRELUNATE GYRUS; MACAQUE MONKEY; STIMULUS ONSET;
Keywords:
ATTENTION; CORTEX; DYSLEXIA; EXPRESS SACCADE; EYE MOVEMENTS; FIXATION; OCULOMOTOR SYSTEM; REACTION TIME; SACCADE; VISION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social Sciences Citation Index
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
83
Recensione:
Indirizzi per estratti:
Citazione:
B. Fischer e H. Weber, "EXPRESS SACCADES AND VISUAL-ATTENTION", Behavioral and brain sciences, 16(3), 1993, pp. 553-567

Abstract

One of the most intriguing and controversial observations in oculomotor research in recent years is the phenomenon of express saccades in monkeys and man. These are saccades with such short reaction times (106msec in man, 70 msec in monkeys) that some experts on eye movements still regard them as artifacts or as anticipatory reactions that do notneed any further explanation. On the other hand, some research groupsconsider them not only authentic but also a valuable means of investigating the mechanisms of saccade generation, the coordination of vision and eye movements, and the mechanisms of visual attention. This target article puts together pieces of experimental evidence in oculomotorand related research - with special emphasis on the express saccade -to enhance our present understanding of the coordination of vision, visual attention, and the eye movements subserving visual perception and cognition. We hypothesize that an optomotor reflex is responsible for the occurrence of express saccades, one that is controlled by higherbrain functions involved in disengaged visual attention and decision making. We propose a neural network as the basis for more elaborate mathematical models or computer simulations of the optomotor system in primates.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 04:14:08