Can we discriminate felt and seen body? : A study under left-right reversed vision paradigm.

在视觉左右颠倒的条件下检查本体感觉的视觉捕获。在这种情况下，人们认为不可能发生视觉捕获。然而，目前的研究使用了一个复杂的设计来证明捕获。在第一个实验中，立即的效果得到了证实，在第二个实验中，闭上眼睛后的效果的持久性得到了证明。当受试者用食指轻轻触摸振动的圆柱体时，他们的手和手臂被动地顺时针或逆时针移动。通过一个左右反转棱镜，所有12名受试者感知他们的手的运动方向的基础上的视觉信息，尽管意识到的视觉换位（第一个实验）。在实验二中，15名被试中约有一半的被试从实验初期就表现出闭上眼睛后仍受视觉影响较大的特点，本研究证实了视觉捕获发生在视觉左右反转的情况下，并证明了即使闭上眼睛，黑暗中的视觉图像也起着视觉的作用，并可能捕获本体感受。此外，提供的证据表明，揭示捕获所需的时间比哈里斯和他的同事所指出的要短得多。这些发现有助于我们理解视觉捕捉是视觉换位世界知觉适应的初始阶段，并表明知觉适应在戴上视觉换位设备后立即开始。此外，在本项目中，我讨论了视觉换位研究框架之外的感觉和看到的身体之间的关系（Yoshimura，1996 a），并回顾了日本对这一研究领域的贡献的历史（Yoshimura，1996 b）。

The visual capture of proprioception was examined in the visually left-right reversed condition. Under this condition, it had been thought impossible for visual capture to occur. The present research, however, demonstrated the capture using a sophisticated design.In the first experiment the immediate effect was confirmed, and in the second experiment the persistence of the effect after eyes were closed was demonstrated. While subjects lightly touched a vibrating cylinder with their index finger(s), their hand(s) and arm(s) were moved passively in either a clockwise or counterclockwise direction. Looking through a left-right reversing prism, all 12 subjects perceived the direction of their hand movements based on visual infoemation despite being aware of the visual transposition (first experiment). In the second experiment, about half of the 15 subjects displayd characteristics of remaining greatly influence by vision when eyes were closed from the early stage of the experimental session.The present research confirmed that visual capture occurs in visual left-right reversal situations, and demonstrated that even when eyes are closed, the visual image in darkness takes the role of vision and may capture proprioception. Furthemore, evidence was provided which shows rhat the time necessary to reveal the capture is mush shorter than noted by Harris and his colleagues. These findings facilitate our understanding that visual capture represents the initial stage of perceptual adaptation to the visually transposed world and suggests that perceptual adaptation begins immediately after putting on the visually transposing devices.Furthermore, in the present project I discussed the relationship between felt and seen body beyond the framework of visual transposition research (Yoshimura, 1996a) and reviewed the history of Japanese contribution to this research field (Yoshimura, 1996b).