Laboratory of Neuropsychology and Cognitive Neuroscience, Department of Neuroscience and Imaging, University G. d'Annunzio, Via dei Vestini 33, 66013 Chieti, Italy.
Exp Brain Res. 2013 Aug;229(2):197-202. doi: 10.1007/s00221-013-3607-0. Epub 2013 Jun 14.
Recent evidence indicates that we experience manipulable objects as graspable, provided that they fall within our reaching space. Nevertheless, such evidence comes from studies using virtual objects that have poor ecological validity. Here, we used a spatial alignment effect paradigm and systematically examined this effect when a real handled object was presented at four different distances, namely near-reaching space, actual-reaching space, perceived-reaching space, and non-reaching space. Participants responded with either the right or the left hand as soon as the real object, a mug with the handle oriented toward the left or right, was presented. We found spatial compatibility effect only when the object was presented in the near-reaching and actual-reaching spaces. Results suggest that the activation of the potential actions to perform with objects is modulated by object accessibility. They also suggest that accessibility is exclusively linked to the actual rather than the estimated reaching ability of the perceiver. Results are discussed within the theoretical framework of embodied cognition.
最近的证据表明，只要物体在我们的可触及范围内，我们就会将其视为可抓握的。然而，这些证据来自于使用虚拟物体的研究，而虚拟物体的生态有效性较差。在这里，我们使用空间对准效应范式，当一个真实的手持物体在四个不同的距离（即近伸手空间、实际伸手空间、感知伸手空间和不可及空间）呈现时，系统地检查了这种效应。当一个带有手柄朝左或朝右的杯子出现在参与者面前时，他们会用右手或左手尽快做出反应。我们只在物体出现在近伸手空间和实际伸手空间时发现了空间兼容性效应。结果表明，对执行物体潜在动作的激活受到物体可及性的调节。它们还表明，可及性仅与实际的而不是感知者估计的可达能力相关。研究结果在具身认知的理论框架内进行了讨论。
