Hsiao S S, Johnson K O, Twombly I A
Dept. of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205.
Acta Psychol (Amst). 1993 Oct;84(1):53-67. doi: 10.1016/0001-6918(93)90072-y.
Roughness perception is coded in the somatosensory system by neurons in the type I slowly adapting (SAI) system. When the fingers scan a surface, an isomorphic representation of the surface is encoded in the discharge patterns of SAI afferents. Central neurons in area 3b of primary somatosensory (SI) cortex spatially filter the peripheral image to compute local spatial variation. The outputs from these neurons converge onto neurons in area 1 and onto neurons in secondary somatosensory (SII) cortex which we believe is the critical processing pathway underlying roughness perception.
粗糙度感知在体感系统中由I型慢适应（SAI）系统中的神经元进行编码。当手指扫过一个表面时，该表面的同构表征会编码在SAI传入纤维的放电模式中。初级体感（SI）皮层3b区的中枢神经元会对周边图像进行空间滤波，以计算局部空间变化。这些神经元的输出会聚到1区的神经元以及次级体感（SII）皮层的神经元上，我们认为这是粗糙度感知背后的关键处理路径。
