Olausson H, Hamadeh I, Pakdel P, Norrsell U
Department of Physiology, Göteborg University, Box 432, S-405 30, Göteborg, Sweden.
Brain Res. 1998 Oct 12;808(1):120-3. doi: 10.1016/s0006-8993(98)00838-5.
We determined the ability to appreciate the direction of a skin pull caused by a moving pin that was glued to the forearm skin. A majority of the subjects were able to tell the direction of pin movements with an excursion of 0.13 mm (>/=66% correct responses, p<0.05). Local skin anaesthesia showed that stretch sensitive receptors located over 15 mm in front and behind the pin correctly signalled the direction of these minute skin pulls. It was concluded that information about patterns of skin stretch is an important component of the somatosensory system that may contribute not only to kinaesthetic, but also to cutaneous sensations.
我们测定了辨别粘在前臂皮肤上的移动大头针所引起的皮肤牵拉方向的能力。大多数受试者能够辨别移动距离为0.13毫米的大头针的移动方向（正确反应率≥66%，p<0.05）。局部皮肤麻醉显示，位于大头针前后15毫米以上的牵张敏感感受器能正确地发出这些微小皮肤牵拉方向的信号。研究得出结论，有关皮肤牵张模式的信息是体感系统的一个重要组成部分，它不仅可能有助于动觉，还可能有助于皮肤感觉。
