Does response facilitation to visuo-tactile stimuli around a remote-controlled hand avatar reflect peripersonal space or attentional bias?
Does response facilitation to visuo-tactile stimuli around a remote-controlled hand avatar reflect peripersonal space or attentional bias?
复制标题
对遥控手化身周围视觉触觉刺激的反应促进是否反映了周围空间或注意力偏差？
DOI：
10.1007/s00221-021-06192-8
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发表时间：
2021
影响因子：
2
通讯作者：
Yokosawa Kazuhiko
中科院分区：
文献类型：
--
作者：
Mine Daisuke;Yokosawa Kazuhiko
人们对身体附近呈现的视觉-触觉刺激反应更快（即，在个人周围空间中）比单独呈现的触觉刺激更敏感。这种多感官促进效应已被用作测量近个人空间。先前的研究已经报道，近个人空间表征可以通过主动使用手持工具或断开的手部化身来调制。然而，以往的研究忽略了主动工具使用的注意效应可能会影响多感觉易化。在本研究中，我们同时向参与者的左手或右手提供触觉刺激，并在参与者的左手或右手的运动操作的虚拟手化身附近提供视觉刺激，该虚拟手化身在虚拟环境中显示得很远并且与身体断开。参与者对触觉刺激做出反应，而忽略视觉刺激。结果表明，当触觉刺激被传递到用于操作手化身的手时，多感官促进效应。相比之下，当触觉刺激被传递到没有操作手部化身的手时，没有观察到促进。这些结果表明，多感官促进效应的强度在不同条件下是不同的，即使在不同条件下，手部化身周围捕获的视觉注意力也是受控的。我们的结论是，调制的近个人空间所产生的使用工具或化身是几乎独立的视觉注意力周围的工具或化身捕获。
People react faster to visuo-tactile stimuli presented near the body (i.e., in peripersonal space) than to tactile stimuli presented alone. This multi-sensory facilitation effect has been used as a measurement of peripersonal space. Previous research has reported that peripersonal space representations can be modulated by actively using hand-held tools or disconnected hand avatars. However, previous research has ignored the possibility that the attentional effect of active tool use could affect multi-sensory facilitation. In the present study, we delivered tactile stimuli to participants’ left or right hand concurrently with visual stimuli presented near a virtual hand avatar operated by the movements of participants’ left or right hand, which was shown far in a virtual environment and disconnected from the body. Participants reacted to tactile stimuli while ignoring the visual stimuli. The results indicated a multi-sensory facilitation effect when tactile stimuli were delivered to the hand used to operate the hand avatar. In contrast, the facilitation was not observed when the tactile stimuli were delivered to the hand that is not operating the hand avatar. These results suggest that the strength of the multi-sensory facilitation effect differed across conditions, even though the visual attention captured around the hand avatar was controlled across conditions. We concluded that the modulation of peripersonal space resulting from using tools or avatars is nearly independent of visual attention captured around tools or avatars.