Body-related neglect in tool use

人类行为往往针对与环境相关的感知变化，而这些变化与自身的感知行为后果相矛盾。当使用真实或虚拟工具时，这种情况很常见，因为工具的实际运动可能与操作手的感觉运动相冲突。这样的冲突损害了工具运动的产生和工具的感知体现。初步研究表明，在动作产生和可能的动作执行过程中，通过下调与身体相关的感知（“与身体相关的忽视”）来克服这种感觉间冲突。该提案研究了这种下调的“何时”、“什么”和“如何”。我们将揭示它的前提、时间点、内容和机制起源。这样做将全面描绘工具性人类行为的基本感知后果。

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.