Oculomotor activity and visual spatial attention

被引:64
作者
Chelazzi, L
Biscaldi, M
Corbetta, M
Peru, A
Tassinari, G
Berlucchi, G
机构
[1] UNIV VERONA,DIPARTIMENTO SCI NEUROL & VIS,SEZ FISIOL,I-37134 VERONA,ITALY
[2] INST BIOPHYS,BRAIN RES UNIT,FREIBURG,GERMANY
[3] UNIV WASHINGTON,SCH MED,DEPT NEUROL & NEUROL SURG,ST LOUIS,MO
[4] UNIV WASHINGTON,MCDONNELL CTR HIGHER BRAIN STUDIES,ST LOUIS,MO
关键词
vision; selective attention; reaction time; saccadic eye movement; oculomotor system; orienting;
D O I
10.1016/0166-4328(95)00134-4
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
Subjects made a horizontal or vertical saccade in response to a non-lateralized auditory stimulus. Simple manual reaction time (RT) for the detection of light targets at extrafoveal locations was modulated by the intention to make the saccade insofar as RT to targets presented at the saccadic goal location or in the hemifield containing that location was faster than RT to targets presented at the opposite, mirror-symmetric location. This RT difference was maximal prior to the beginning of the saccade and vanished after saccade termination, indicating that the effect was caused by the neural activity leading to the saccade rather than to the eye movement or the eye position per se. The results have implications for the understanding of the relations between visual spatial attention and oculomotor control, especially with regard to inhibitory phenomena arising from the non-correspondence between the line of sight and the focus of attention.
引用
收藏
页码:81 / 88
页数:8
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