RESPONSES OF MECHANORECEPTIVE AFFERENT UNITS IN THE GLABROUS SKIN OF THE HUMAN HAND TO SINUSOIDAL SKIN DISPLACEMENTS
RESPONSES OF MECHANORECEPTIVE AFFERENT UNITS IN THE GLABROUS SKIN OF THE HUMAN HAND TO SINUSOIDAL SKIN DISPLACEMENTS
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DOI：
10.1016/0006-8993(82)90899-x
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发表时间：
1982-01-01
期刊：
影响因子：
2.9
通讯作者：
LUNDSTROM, R
中科院分区：
文献类型：
--
作者：
JOHANSSON, RS;LANDSTROM, U;LUNDSTROM, R
本文记录了支配人手无毛皮肤的4种不同类型的机械感受性传入单位对垂直正弦皮肤位移的脉冲反应。在宽范围的频率（0.5-400 Hz）和振幅（0.001-1 mm）下研究了周期响应（定义为每个正弦波周期诱发的脉冲数）。快速适应单位（RA）在8 ~ 64 Hz的刺激频率下最易兴奋，而Pacinian单位（PC）的相应频率为> 64 Hz。在高刺激振幅下，RA和PC单元在测试的频率范围内显示出非常相似的响应曲线。缓慢适应的单位类型（SA I和SA II）的灵敏度在较低的频率是最大的。所有4种类型的单位的特征发现是，振幅越高，周期响应最大的频率越低。
The impulse responses to perpendicular sinusoidal skin displacements were recorded from 4 different types of mechanoreceptive afferent units innervating the glabrous skin of the human hand. The cycle responses, defined as the number of impulses evoked per sine wave cycle, were studied at a wide range of frequencies (0.5-400 Hz) and amplitudes (0.001-1 mm). The rapidly adapting units (RA) were most easily excited at stimulus frequencies between 8 and 64 Hz, whereas the corresponding frequencies for the Pacinian units (PC) were > 64 Hz. At high stimulus amplitudes, the RA and the PC units showed quite similar response profiles within the range of frequencies tested. The sensitivities of the slowly adapting unit types (SA I and SA II) were greatest at lower frequencies. A characteristic finding for all 4 types of units was that the higher the amplitude, the lower the frequency at which the cycle response was maximal.