Hashimoto I, Yoshikawa K, Sasaki M, Gatayama T, Nomura M, Yokoyama S, Sano K
Department of Psychophysiology, Tokyo Institute of Psychiatry, Japan.
Neurol Res. 1994 Feb;16(1):63-7. doi: 10.1080/01616412.1994.11740195.
Air-puff stimuli were delivered to five successive sites over the index finger and palm to obtain psychophysical responses and to record sensory nerve action potentials (SNAPs) from the median nerve at the wrist for elucidating psychoneural correlations across different locations of the glabrous hand. Magnitude estimations at each location evoked uniform subjective magnitudes for all stimulus locations. The time-integral of all SNAP components was the largest at the finger tip and the smallest at the most proximal site over the palm in agreement with the reported receptor density gradient across the finger and palm. Thus, the constant magnitude estimations with different quantities of peripheral afferent inputs across areas imply that the central nervous system plays a major role in shaping subjective magnitude estimation across different locations.
向食指和手掌上的五个连续部位施加吹气刺激，以获得心理物理反应，并记录腕部正中神经的感觉神经动作电位（SNAPs），以阐明无毛手部不同位置的心理神经相关性。每个位置的大小估计对所有刺激位置都引发了一致的主观大小。所有SNAP成分的时间积分在指尖处最大，在手掌最近端部位最小，这与报道的手指和手掌上的感受器密度梯度一致。因此，不同区域外周传入输入量不同但大小估计恒定，这意味着中枢神经系统在塑造不同位置的主观大小估计中起主要作用。
