Pavani F, Spence C, Driver J
Dipartimento di Psicologia, Università degli Studi di Bologna, Bologna, Italy.
Psychol Sci. 2000 Sep;11(5):353-9. doi: 10.1111/1467-9280.00270.
When the apparent visual location of a body part conflicts with its veridical location, vision can dominate proprioception and kinesthesia. In this article, we show that vision can capture tactile localization. Participants discriminated the location of vibrotactile stimuli (upper, at the index finger, vs. lower, at the thumb), while ignoring distractor lights that could independently be upper or lower. Such tactile discriminations were slowed when the distractor light was incongruent with the tactile target (e.g., an upper light during lower touch) rather than congruent, especially when the lights appeared near the stimulated hand. The hands were occluded under a table, with all distractor lights above the table. The effect of the distractor lights increased when rubber hands were placed on the table, "holding" the distractor lights, but only when the rubber hands were spatially aligned with the participant's own hands. In this aligned situation, participants were more likely to report the illusion of feeling touch at the rubber hands. Such visual capture of touch appears cognitively impenetrable.
当身体部位的视在视觉位置与其真实位置发生冲突时，视觉可以主导本体感觉和动觉。在本文中，我们表明视觉可以捕捉触觉定位。参与者辨别振动触觉刺激的位置（上方，在食指，与下方，在拇指），同时忽略可能独立为上方或下方的干扰光。当干扰光与触觉目标不一致（例如，下方触摸时出现上方的光）而不是一致时，这种触觉辨别会减慢，尤其是当光出现在受刺激的手附近时。双手被遮挡在桌子下面，所有干扰光都在桌子上方。当橡胶手放在桌子上“拿着”干扰光时，干扰光的影响会增加，但只有当橡胶手与参与者自己的手在空间上对齐时才会如此。在这种对齐的情况下，参与者更有可能报告在橡胶手上感觉到触摸的错觉。这种视觉对触觉的捕捉似乎在认知上是无法穿透的。
