Johansson R S, Landström U, Lundström R
Brain Res. 1982 Jul 22;244(1):27-35. doi: 10.1016/0006-8993(82)90900-3.
One type of rapidly adapting (RA) and one type of slowly adapting (SA I) mechanoreceptive unit innervating the glabrous skin area of the human hand have small and well defined receptive fields. Their responses to perpendicular sinusoidal skin displacements were measured when the field was completely covered by a flat contact surface and when the edge of the contact surface was placed over the field. It was found that the majority of the RA and SA I units exhibited stronger responses when the edge of the contactor was placed over the receptive field. This edge sensitivity, which was greatest for the SA I units, may be of particular importance in improving the spatial analysis of the edges of objects in contact with the skin during manual manipulation and exploration.
一种支配人类手部无毛皮肤区域的快速适应（RA）型和一种慢速适应（SA I）型机械感受单元具有小且界限分明的感受野。当感受野被一个平坦的接触面完全覆盖以及当接触面的边缘置于感受野上方时，测量了它们对垂直正弦皮肤位移的反应。结果发现，当接触器的边缘置于感受野上方时，大多数RA和SA I单元表现出更强的反应。这种边缘敏感性在SA I单元中最为显著，在手动操作和探索过程中，对于改善与皮肤接触的物体边缘的空间分析可能具有特别重要的意义。
