Visual motion information modulates tactile roughness perception

Visual motion information modulates tactile roughness perception
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视觉运动信息调节触觉粗糙度感知

DOI:
10.1038/s41598-020-70831-3
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发表时间:
2020
期刊:
影响因子:
4.6
通讯作者:
Kuroki Scinob
Kuroki Scinob
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Suzuishi Yosuke;Hidaka Souta;Kuroki Scinob

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我们通过眼睛和手感知物体的粗糙度。许多跨模态研究表明,静态视觉线索在粗糙度知觉中没有明显的视觉-触觉交互作用。一个例外是,视觉观察任务无关的手的动作,而不是任务相关的物体的纹理,可以提高性能的触觉粗糙度的歧视。我们的研究调查是否任务无关的视觉运动,无论是物体粗糙度或身体线索可以影响触觉粗糙度知觉。参与者被要求触摸砂纸,同时横向移动他们的手,并查看移动或静态正弦波光栅,而不能看到他们的手,并估计粗糙度的触觉刺激。移动光栅与低空间频率诱导平滑的粗糙度感知比静态视觉刺激时,视觉光栅在相反的方向上移动的手的动作。当视觉刺激具有较高的空间频率或当被试被动接触触觉刺激时,视觉运动的影响不会出现。这些结果表明,简单的任务无关的视觉运动,没有对象的粗糙度或身体线索,可以调节触觉粗糙度感知与主动身体运动的空间频率选择性的方式。
We perceive the roughness of an object through our eyes and hands. Many crossmodal studies have reported that there is no clear visuo-tactile interaction in roughness perception using static visual cues. One exception is that the visual observation of task-irrelevant hand movements, not the texture of task-relevant objects, can enhance the performance of tactile roughness discrimination. Our study investigated whether task-irrelevant visual motion without either object roughness or bodily cues can influence tactile roughness perception. Participants were asked to touch abrasive papers while moving their hand laterally and viewing moving or static sine wave gratings without being able to see their hand, and to estimate the roughness magnitude of the tactile stimuli. Moving gratings with a low spatial frequency induced smoother roughness perceptions than static visual stimuli when the visual grating moved in the direction opposite the hand movements. The effects of visual motion did not appear when the visual stimuli had a high spatial frequency or when the participants touched the tactile stimuli passively. These results indicate that simple task-irrelevant visual movement without object roughness or bodily cues can modulate tactile roughness perception with active body movements in a spatial-frequency-selective manner.
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