Body-related neglect in tool use

人类行为的目标往往是与环境相关的知觉变化，这些变化与自身身体的知觉行为后果相矛盾。在使用真实或虚拟工具时，这种情况很常见，在这种情况下，工具的可见移动可能与操作手的感觉到的移动相冲突。这种冲突尤其损害了工具移动的产生和工具的感知体现。初步工作表明，这种感觉间的冲突可以通过在动作产生过程中下调与身体相关的知觉以及可能的动作执行(与身体相关的忽视)来克服。这项提案研究了这种下调监管的“何时”、“什么”和“如何”。我们将揭示其前提、时间点、内容和机制渊源。这样做将描绘出一幅工具性人类行为的根本感性后果的全面图景。

Human actions often aim at environment-related perceptual changes that contradict perceptual action consequences at the own body. This scenario is quite common when using real or virtual tools where seen movements of a tool can be in conflict with felt movements of the operating hand. Such conflict impairs the generation of tool movements and the perceptual embodiment of the tool, among other things. Preliminary work suggests that such intersensory conflict is overcome by downregulation of body-related perception during action production and possibly action execution (‘body-related neglect’). This proposal studies the ‘when’, ‘what’ and ‘how’ of such downregulation. We will reveal its preconditions, time-point, content and mechanistic origin. Doing so will portray a comprehensive picture of a fundamental perceptual consequence of instrumental human action.