视觉注意周围的手定位的本体感觉信息

S. Shioiri, Takumi Sasada, Ryota Nishikawa
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引用次数: 1

摘要

摘要视觉加工的便利化已被报道在手附近的空间。为了了解手邻近注意的潜在机制,我们进行了实验,将手相关效应从自上而下的注意中分离出来,将本体感觉信息从视觉信息中分离出来,将位置效应从动作影响中分离出来,将距离效应从周围个人效应中分离出来。闪动滞后效应作为注意调制的指标。由于实验结果显示,手附近的闪滞效应较小,因此我们认为,通过本体感觉信息识别的手周围的视觉刺激存在促进作用。常规反应时间测量证实了这一点。我们还测量了稳态视觉诱发电位(SSVEP),以研究手接近注意和自上而下注意的空间特性。结果表明,SSVEP反映了自上而下注意的效应,而不反映手邻近注意的效应。假设SSVEP在视觉处理的早期阶段对神经活动有反应,这表明手靠近注意的位置处于视觉处理的后期。左撇子的结果与右撇子的结果不同,这与利手性的变化有关。
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Visual attention around a hand location localized by proprioceptive information
Abstract Facilitation of visual processing has been reported in the space near the hand. To understand the underlying mechanism of hand proximity attention, we conducted experiments that isolated hand-related effects from top–down attention, proprioceptive information from visual information, the position effect from the influence of action, and the distance effect from the peripersonal effect. The flash-lag effect was used as an index of attentional modulation. Because the results showed that the flash-lag effect was smaller at locations near the hand, we concluded that there was a facilitation effect of the visual stimuli around the hand location identified through proprioceptive information. This was confirmed by conventional reaction time measures. We also measured steady-state visual evoked potential (SSVEP) in order to investigate the spatial properties of hand proximity attention and top–down attention. The results showed that SSVEP reflects the effect of top–down attention but not that of hand proximity attention. This suggests that the site of hand proximity attention is at a later stage of visual processing, assuming that SSVEP responds to neural activities at the early stages. The results of left-handers differed from those of right-handers, and this is discussed in relation to handedness variation.
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