Lackner J R, Shenker B
J Neurosci. 1985 Mar;5(3):579-83. doi: 10.1523/JNEUROSCI.05-03-00579.1985.
We evaluated the influence of proprioceptive information about arm position on the perceptual localization of auditory and visual targets attached to the hand. Our approach was to distort the perceived position of the restrained arm by means of mechanical vibration of the biceps brachii muscle; such vibration elicits compelling apparent extension of the stationary forearm (Goodwin, G. M., D. I. McCloskey, and P. B. C. Matthews (1972) Science 175: 1382-1384, Brain 95: 705-748), and subjects report changes in the apparent directions of the auditory and visual targets attached to their hand. These changes are in the same direction and plane as apparent arm motion and their onsets are coincident with or lag slightly behind the experienced displacement of the arm. While visual motion is being experienced, a subject's eyes remain steadily fixating the target light. The pattern of findings demonstrates that proprioceptive information about limb position can influence the central representation of gaze and auditory localization can be similarly influenced. The biasing of auditory localization indicates that identical patterns of arrival time and intensity cues at the two ears can give rise to the perception of sounds in widely disparate spatial positions in relation to the head and body, depending on the proprioceptive representation of the direction of the sound source.
我们评估了关于手臂位置的本体感觉信息对附着于手部的听觉和视觉目标的感知定位的影响。我们的方法是通过肱二头肌的机械振动来扭曲被束缚手臂的感知位置；这种振动会引起静止前臂明显的伸展（古德温，G.M.，D.I.麦克洛斯基，和P.B.C.马修斯（1972年）《科学》175：1382 - 1384，《大脑》95：705 - 748），并且受试者会报告附着在其手上的听觉和视觉目标的明显方向变化。这些变化与手臂的明显运动方向和平面相同，并且它们的起始与手臂的实际位移同时出现或略滞后于实际位移。在体验视觉运动时，受试者的眼睛始终稳定地注视着目标光。研究结果表明，关于肢体位置的本体感觉信息可以影响注视的中枢表征，并且听觉定位也会受到类似的影响。听觉定位的偏差表明，到达双耳的时间和强度线索的相同模式，根据声源方向的本体感觉表征，会导致在相对于头部和身体的广泛不同空间位置上对声音的感知。
