Greenspan J D, Kenshalo D R, Henderson R
Somatosens Res. 1984;1(4):379-93. doi: 10.3109/07367228409144556.
The effects of skin indentation depth and rate on threshold and suprathreshold tactile sensations were investigated. Indentation rates between 0.3 and 10 mm/sec had little effect on the absolute tactile thresholds measured in terms of indentation depth. Slower rates resulted in increased absolute thresholds. Estimates of the growth in intensity of tactile sensations were made as functions of indentation depth and rate. The fastest rate used (10 mm/sec), for a given depth of indentation, produced the most intense sensation; the slowest (0.1 mm/sec), the least intense sensation. The tactile sensation magnitude estimates, with rate as the parameter, could be described by power functions. At the slowest indentation rate the exponent of the function was 1.36. At faster indentation rates (0.4, 1.0, and 10 mm/sec), two functions of markedly different slopes were required to describe the estimates. The exponents of the power functions were between 0.38 and 0.49 for indentation depths up to about 0.9 mm, and between 1.07 and 1.43 for deeper indentation depths.
研究了皮肤压痕深度和速率对阈值及阈上触觉感受的影响。0.3至10毫米/秒之间的压痕速率对以压痕深度衡量的绝对触觉阈值影响不大。较慢的速率会导致绝对阈值增加。根据压痕深度和速率对触觉感受强度的增长进行了估计。对于给定的压痕深度，所使用的最快速率（10毫米/秒）产生的感觉最强烈；最慢的速率（0.1毫米/秒）产生的感觉最不强烈。以速率为参数的触觉感受大小估计可用幂函数描述。在最慢的压痕速率下，函数的指数为1.36。在较快的压痕速率（0.4、1.0和10毫米/秒）下，需要两个斜率明显不同的函数来描述估计值。对于压痕深度达约0.9毫米时，幂函数的指数在0.38至0.49之间，对于更深的压痕深度，指数在1.07至1.43之间。
