Effects of contrast on smooth pursuit eye movements.
Effects of contrast on smooth pursuit eye movements.
复制标题
对比度对平滑追踪眼球运动的影响。
DOI：
10.1167/5.5.6
复制
发表时间：
2005
影响因子：
1.8
通讯作者：
K. Gegenfurtner
中科院分区：
文献类型：
--
作者：
M. Spering;D. Kerzel;D. Braun;M. Hawken;K. Gegenfurtner
众所周知，当对比度降低时，运动刺激可以看起来运动得更慢（P. Thompson，1982）。在这里，我们解决的问题，刺激对比度的变化是否也影响平稳追求眼球运动。受试者被要求顺利跟踪一个移动的Gabor补丁。靶点的速度（1、8和15度/秒）、空间频率（0.1、1、4和8度/秒）和对比度各不相同，范围从略低于个体阈值到最大对比度。结果表明，平滑追踪眼速度增益随对比度的增加而显著增加。低于两到三倍阈值的对比度水平，追求增益，加速度，延迟和位置准确性严重受损。因此，平滑追踪运动反应在低对比度下表现出与先前关于感知的研究中所证明的相同的减慢。
It is well known that moving stimuli can appear to move more slowly when contrast is reduced (P. Thompson, 1982). Here we address the question whether changes in stimulus contrast also affect smooth pursuit eye movements. Subjects were asked to smoothly track a moving Gabor patch. Targets varied in velocity (1, 8, and 15 deg/s), spatial frequency (0.1, 1, 4, and 8 c/deg), and contrast, ranging from just below individual thresholds to maximum contrast. Results show that smooth pursuit eye velocity gain rose significantly with increasing contrast. Below a contrast level of two to three times threshold, pursuit gain, acceleration, latency, and positional accuracy were severely impaired. Therefore, the smooth pursuit motor response shows the same kind of slowing at low contrast that was demonstrated in previous studies on perception.
影响因子：
2.5
作者：
KRAUZLIS, RJ;LISBERGER, SG
通讯作者：
LISBERGER, SG
影响因子：
1.8
作者：
Gegenfurtner, KR;Xing, DJ;Hawken, MJ
通讯作者：
Hawken, MJ
处理加速运动的局限性的知觉和动眼神经证据。
影响因子：
1.8
作者：
Watamaniuk,ScottNJ;Heinen,StephenJ
通讯作者：
Heinen,StephenJ