No evidence for visuomotor priming in a visually guided action task
No evidence for visuomotor priming in a visually guided action task
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DOI：
10.1016/j.neuropsychologia.2004.11.008
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发表时间：
2005-01-01
期刊：
影响因子：
2.6
通讯作者：
Goodale, MA
中科院分区：
文献类型：
--
作者：
Cant, JS;Westwood, DA;Goodale, MA
crighero et al. [crighero， L., Fadiga， U., Umilta， C.A, & Rizzolatti， G.(1996)]。视觉运动启动效应的证据。神经报告，8,347-349]表明，当目标物体与先前看到的“主要”物体具有相同的方向时，抓取运动启动得更快。然而，由于目标物体在这些实验中从未出现过，因此尚不清楚这些数据是否应该被解释为一般视觉运动启动效应的证据（正如作者所主张的那样），还是仅仅作为记忆引导行为中更具体的启动效应的证据。在实验1中，我们证明了记忆引导而非视觉引导的抓取可以通过被动观看启动物体而启动。在实验2中，我们比较了初始物体对可见目标物体的抓取和命名的影响。当目标的形状与启动项相同时，参与者能更快地说出目标的名字，这与公认的知觉启动效应一致。在相同的测试参数下，抓握反应时间不受启动物的方向和形状的影响。在实验3中，被试在观看或抓住一个启动物体后抓住目标物体。在两个任务中，抓握的反应时间不受启动物视觉特征的影响。综上所述，这些结果与知觉记忆——可能是视觉启动效应的基础——在很大程度上与编程对可见物体的动作度量无关的观点是一致的。视觉引导的动作是由专用的视觉运动模块实时编程的，这些模块似乎对启动效应不敏感，而启动效应是视觉感知的标志。(C) 2004 Elsevier Ltd.版权所有。
Craighero et al. [Craighero, L., Fadiga, U., Umilta, C.A., & Rizzolatti, G. (1996). Evidence for visuomotor priming effect. Neuroreport, 8, 347-349] showed that grasping movements were initiated more quickly when the goal object shared the same orientation as a previously seen 'prime' object. Because the goal object was never visible in these experiments, however, it is unclear whether the data should be construed as evidence for a general visuomotor priming effect (as the authors contend), or only as evidence for a more specific priming effect on memory-guided actions. In Experiment 1, we demonstrated that memory-guided but not visually guided grasping can be primed by passive viewing of a prime object. In Experiment 2, we compared the effects of a prime object on the grasping and naming of a visible target object. Participants were faster to name the target when its shape was the same as the prime, consistent with well-established perceptual priming effects. Under the identical set of testing parameters, however, reaction time for grasping was unaffected by the orientation or the shape of the prime. In Experiment 3, participants grasped the goal object after either viewing or grasping a prime object. Reaction time for grasping was unaffected by the visual features of the prime in both tasks. Taken together, these results are consistent with the view that perceptual memory-which presumably underlies visual priming effects-is largely irrelevant for programming the metrics of actions to visible objects. Visually guided actions are programmed in real-time by dedicated visuomotor modules that appear to be insensitive to the priming effects that are a hallmark of visual perception. (C) 2004 Elsevier Ltd. All rights reserved.