Dortmund University of Technology, Department of Psychology, Dortmund, Germany.
Neuropsychologia. 2010 Oct;48(12):3405-15. doi: 10.1016/j.neuropsychologia.2010.06.034. Epub 2010 Jul 3.
It is an open question whether the visual transformations guiding human actions are similar to those generating visual perception. The Action-Perception model assumes a strict division of labor: the ventral cortical stream generates perception while the dorsal stream guides actions. However, only skilled and natural actions are assumed to be under dorsal control, while awkward and left-handed actions should be under ventral control in the same way as perception. Here, we used a combination of Garner-Interference and the psychological refractory period (PRP) paradigm to test this notion. We found that all types of grasping (left-handed, awkward, using a tool) behave in a way similar to skilled right-handed grasping: other than perception they show no Garner-Interference, but similar to perception they show a limitation of processing capacities as indicated by the PRP paradigm. This behavior suggests that similar processes guide all these actions.
是否引导人类动作的视觉转换与产生视觉感知的转换相似，这仍是一个悬而未决的问题。动作-感知模型假设了严格的分工：腹侧皮质流生成感知，而背侧流引导动作。然而，只有熟练和自然的动作被认为是受背侧控制的，而笨拙的和左手的动作应该以与感知相同的方式受腹侧控制。在这里，我们使用加纳德干扰和心理不应期（PRP）范式的组合来检验这一观点。我们发现，所有类型的抓握（左手、笨拙、使用工具）的行为方式都与熟练的右手抓握相似：除了感知，它们没有加纳德干扰，但与感知类似，它们表现出处理能力的限制，这表明了 PRP 范式。这种行为表明，类似的过程引导着所有这些动作。
