Rehabilitating upper limb function after stroke is a key therapeutic goal. In healthy brains, objects, especially tools, are said to cause automatic motoric ‘affordances’; affecting our preparation to handle objects. For example, the N2 event-related potential has been shown to correlate with the functional properties of objects in healthy adults during passive viewing. We posited that such an affordance effect might also be observed in chronic-stage stroke survivors. With either dominant or non-dominant hand forward, we presented three kinds of stimuli in stereoscopic depth; grasp objects affording a power-grip, pinch objects affording a thumb and forefinger precision-grip and an empty desk, affording no action. EEG data from 10 S survivors and 15 neurologically healthy subjects were analysed for the N1 and N2 ERP components. Both components revealed differences between the two object stimuli categories and the empty desk for both groups, suggesting the presence of affordance-related motor priming from around 100 to 370 ms after stimulus onset. Hence, we speculate that stroke survivors with loss of upper limb function may benefit from object presentation regimes designed to maximise motor priming when attempting movements with manipulable objects. However, further investigation would be necessary with acute stage patients, especially those diagnosed with apraxia.

中风后恢复上肢功能是关键的治疗目标。在健康的大脑中，据说物体（尤其是工具）会引起自动的运动“负担”。影响我们准备处理物体的准备。例如，N2事件相关电位已显示与被动观看过程中健康成年人中物体的功能特性相关。我们假设在慢性卒中幸存者中也可能观察到这种负担能力。借助主导或非主导的手法，我们呈现了三种立体深度的刺激。握住可以握住电源的物体，捏住可以握住拇指和食指的物体，以及空着的桌子，无法进行任何操作。分析了来自10名S幸存者和15名神经系统健康受试者的EEG数据的N1和N2 ERP成分。这两个成分都揭示了两个对象刺激类别之间的差异以及两组的空桌子，这表明在刺激发作后约100到370毫秒内存在与收费相关的运动启动。因此，我们推测，上肢功能丧失的卒中幸存者可能会受益于对象呈现机制，该机制旨在在尝试使用可操纵对象进行运动时最大程度地提高运动启动能力。但是，对于急性期患者，尤其是诊断为失用症的患者，有必要进行进一步的研究。我们推测，上肢功能丧失的卒中幸存者可能会受益于对象呈现机制，该机制旨在在尝试使用可操纵对象进行运动时最大程度地提高运动启动能力。但是，对于急性期患者，尤其是诊断为失用症的患者，有必要进行进一步的研究。我们推测，上肢功能丧失的卒中幸存者可能会受益于对象呈现机制，该机制旨在在尝试使用可操纵对象进行运动时最大程度地提高运动启动能力。但是，对于急性期患者，尤其是诊断为失用症的患者，有必要进行进一步的研究。