Synaesthesia in the normal limb
Synaesthesia in the normal limb
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DOI：
10.1098/rspb.1997.0139
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发表时间：
1997-07-22
影响因子：
4.7
通讯作者：
Rushton, K
中科院分区：
文献类型：
--
作者：
MonWilliams, M;Wann, JP;Rushton, K
我们通过让参与者通过棱镜观察他们的手，引入不同的水平偏差，同时尝试在一张薄桌子的上方和下方对齐他们的手指，从而探索了视觉可能在多大程度上改变动觉知觉。当一只手的视觉图像被移位时，这种不堪重负的动觉判断和参与者可靠地报告说，他们感觉自己的四肢对齐了，即使他们横向错位了多达10厘米。然而，这种效应是通过“视觉捕捉”来实现的。当这项任务在黑暗的房间里进行，手指上绑着一根LED灯指示肢体位置时，运动感觉占主导地位，参与者报告说，LED灯似乎脱离了他们的指尖。在光和暗的条件下，手指都清晰可见，只有背景细节被熄灭。因此，在感知肢体位置时，当视觉背景丰富时，我们似乎相信我们看到的，而不是我们感觉到的；当视觉背景稀疏时，我们相信我们感觉到的。
We explored the degree to which vision may alter kinaesthetic perception by asking participants to view their hand through a prism, introducing different horizontal deviations, while trying to align their fingers above and below a thin table. When the visual image of one hand was displaced this overwhelmed kinaesthetic judgements and participants reliably reported that they felt their limbs were aligned, even when they were laterally mis-aligned by as much as 10 cm. This effect, however, was mediated by 'visual capture' and when the task was attempted in a darkened room with limb position indicated by an LED taped to the finger, kinaesthesis dominated and participants reported that the LED seemed to become detached from their finger tip. In both light and dark conditions the finger was clearly visible and only the background detail was extinguished. Hence, in perceiving limb position, it appears that we believe in what we see, rather than in what we feel, when the visual background is rich, and in what we feel when the visual background is sparse.