EXPRESS ATTENTIONAL SHIFTS

被引:122
作者
MACKEBEN, M
NAKAYAMA, K
机构
[1] Smith Kettlewell Eye Research Institute, San Francisco, CA 94115
关键词
ATTENTION; EYE MOVEMENTS; EXPRESS SACCADES; GAP PARADIGM;
D O I
10.1016/0042-6989(93)90061-Z
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
''Express'' saccades, named for their extremely short latencies, occur more frequently in a paradigm with a ''gap'' in time between the disappearance of the fixation mark and the appearance of the target to be fixated. To explain this result, it has been hypothesized that movements of the eves are preceded by movements of attention [Posner (1980) Quarterly Journal of Experimental Psychology, 32, 3-25], and that removing the fixation mark allows attention to disengage from the fovea and to be deployed more rapidly to the peripheral target, thus diminishing saccadic latency [Fisher (1987) Reviews of Physiology, Biochemistry and Pharmacology, 105, 1-35]. We measured attention using extra-foveal vernier acuity performance. Our results provide direct evidence supporting the above hypothesis. First, we found that the rise of performance for increasing cue lead times was much faster in the ''gap'' paradigm. Second, the time function relating gap duration to discrimination performance was remarkably similar to the one relating gap duration and rate of express saccades reported by Mayfrank, Mobashery, Kimmig & Fischer [(1987) European Archives of Psychiatry and Neurological Science, 235, 269-275]. Third, control experiments showed that it was the disappearance of the fixation mark rather than a non-specific warning that led to more rapid shifts of attention and, thus, to better performance. We therefore conclude that the short latencies of ''express'' saccades may be based on a mechanism involving unusually rapid shifts of attention.
引用
收藏
页码:85 / 90
页数:6
相关论文
共 19 条
[1]   RELATIONSHIP BETWEEN DIRECTED VISUAL-ATTENTION AND SACCADIC REACTION-TIMES [J].
BRAUN, D ;
BREITMEYER, BG .
EXPERIMENTAL BRAIN RESEARCH, 1988, 73 (03) :546-552
[2]  
CAMERON L, 1991, INVESTIGATIVE OPHT S, V32
[3]  
Carpenter R.H.S., 1977, MOVEMENTS EYES
[4]   SOME CHARACTERISTICS OF SELECTIVE ATTENTION IN VISUAL PERCEPTION DETERMINED BY VOCAL REACTION-TIME [J].
ERIKSEN, CW ;
HOFFMAN, JE .
PERCEPTION & PSYCHOPHYSICS, 1972, 11 (02) :169-&
[5]   MECHANISMS OF VISUAL-ATTENTION REVEALED BY SACCADIC EYE-MOVEMENTS [J].
FISCHER, B ;
BREITMEYER, B .
NEUROPSYCHOLOGIA, 1987, 25 (1A) :73-83
[6]  
FISCHER B, 1984, EXP BRAIN RES, V57, P191
[7]   SACCADIC EYE-MOVEMENTS AFTER EXTREMELY SHORT REACTION-TIMES IN THE MONKEY [J].
FISCHER, B ;
BOCH, R .
BRAIN RESEARCH, 1983, 260 (01) :21-26
[8]  
FISCHER B, 1987, REV PHYSL BIOCH PHAR, V105, P1
[9]  
KALESNYKAS RP, 1987, EXP BRAIN RES, V68, P115
[10]  
KROESE B, 1989, VISION RES, V29, P1607