Benedetti F
Department of Pharmacology, University of Texas, Dallas 75235-9041.
Perception. 1991;20(5):687-92. doi: 10.1068/p200687.
The tactile counterpart of diplopia has recently been described: tactile diplopia or diplesthesia. The human fingers show a rather precise organization of the cutaneous areas eliciting diplesthesia. In particular, these areas are very extensive between nonadjacent fingers (second and fourth, second and fifth, and third and fifth), suggesting that the illusory doubling depends on the lack of reciprocal interaction between cutaneous zones during manipulation. In the present study, four subjects agreed to explore and manipulate objects only through nonadjacent fingers for a period of up to six months. The amputation of the third finger was simulated by excluding it from active exploration by means of a bandage. After six months, the diplesthetic areas of the nonadjacent fingers decreased in size or completely disappeared. It is suggested that this reorganization of tactile perception is due to the increase in temporal correlation of the sensory inputs between nonadjacent fingers.
触觉复视或双重感觉。人类手指在引发双重感觉的皮肤区域表现出相当精确的组织。特别是，这些区域在不相邻的手指（第二和第四、第二和第五以及第三和第五）之间非常广泛，这表明错觉性双重成像取决于操作过程中皮肤区域之间缺乏相互作用。在本研究中，四名受试者同意仅通过不相邻的手指探索和操作物体，为期长达六个月。通过用绷带将第三指排除在主动探索之外，模拟第三指的截肢。六个月后，不相邻手指的双重感觉区域尺寸减小或完全消失。有人认为，这种触觉感知的重组是由于不相邻手指之间感觉输入的时间相关性增加所致。
