Shared decision signal explains performance and timing of pursuit and saccadic eye movements.
Shared decision signal explains performance and timing of pursuit and saccadic eye movements.
复制标题
共享决策信号解释了追踪和扫视眼球运动的表现和时间安排。
DOI:
10.1167/5.9.3
复制
发表时间:
2005
影响因子:
1.8
通讯作者:
Krauzlis,RichardJ
中科院分区:
文献类型:
--
作者:
Liston,Dorion;Krauzlis,RichardJ
Each voluntary eye movement provides physical evidence of a visuomotor choice about where and when to look. Primates choose visual targets with two types of voluntary eye movements, pursuit and saccades, although the exact mechanism underlying their coordination remains unknown. Are pursuit and saccades guided by the same decision signal? The present study compares pursuit and saccadic choices using techniques borrowed from psychophysics and models of response time. Human observers performed a luminance discrimination task and indicated their choices with eye movements. Because the stimuli moved horizontally and were offset vertically, subjects' tracking responses consisted of combinations of both pursuit and saccadic eye movements. For each of two signal strengths, we constructed speed–accuracy curves for pursuit and saccades. We found that speed–accuracy curves for pursuit and saccades have the same shape, but are time-shifted with respect to one another. We argue that this pattern occurs because pursuit and saccades share a decision signal, but utilize different response thresholds and are subject to different motor processing delays.
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影响因子:
2.9
作者:
FISCHER, B;BOCH, R
通讯作者:
BOCH, R
影响因子:
13.9
作者:
Sparks,DL;Mays,LE
通讯作者:
Mays,LE
影响因子:
1.8
作者:
H. J. Wyatt;J. Pola
通讯作者:
J. Pola
影响因子:
2.5
作者:
de Brouwer, S;Yuksel, D;Lefèvre, P
通讯作者:
Lefèvre, P
DOI:
10.1037//0097-7403.10.3.390
发表时间:
1984
期刊:
Journal of experimental psychology. Animal behavior processes
影响因子:
--
作者:
D. Mccarthy;M. Davison
通讯作者:
M. Davison