Coherent motion pops out during smooth pursuit
Coherent motion pops out during smooth pursuit
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DOI：
10.1097/00001756-200207190-00020
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发表时间：
2002-07-19
期刊：
影响因子：
1.7
通讯作者：
Kimmig, H
中科院分区：
文献类型：
--
作者：
Greenlee, MW;Schira, MM;Kimmig, H
刺激运动是视觉系统用来分割图形和地面并感知地结合广泛分离的对象的显著特征。追踪眼球运动可以受到这种感知分组过程的影响。我们已经检查了受试者在追踪过程中检测随机点运动图中少量连贯运动的能力。我们比较了受试者在注视固定点或跟踪移动目标时的连贯运动感知测试的表现。结果表明，平滑追踪可以提高被试对相干运动的检测能力。我们尝试性地提出，眼动信号的传出副本可以增强视觉系统检测噪声干扰中稀疏放置的目标之间的相关性的能力。
Stimulus motion is a prominent feature that is used by the visual system to segment figure from ground and perceptually bind widely separated objects. Pursuit eye movements can be influenced by such perceptual grouping processes. We have examined the subjects' ability to detect small amounts of coherent motion in random dot kinematograms during pursuit. We compared performance on tests of coherent motion perception while subjects fixated a stationary spot or while they tracked a moving target. The results indicate that smooth pursuit can improve subjects' ability to detect the presence of coherent motion. We tentatively propose that an efference copy of the eye movement signal can enhance the ability of the visual system to detect correlations between sparsely placed targets among noisy distractors.