触觉的频率分辨机制研究

振动信号在触觉通信中常用来承载快速信息．深入研究触觉的频率分辨机制和能力，可以为设计触觉通信中的振动信号提供理论指导．对13名自愿者触觉的频率分辨精度和分辨速度进行了6个月的训练，并记录下不同阶段的分辨能力．结果表明：触觉根据周期差异来分辨不同振动信号，分辨功能在大脑皮层内完成；经过6个月训练后能够分辨开的振动信号间的最小周期差为1ms，能分辨的最高振动频率为250～322Hz，分辨时所需的振动信号最短保持时间为0．2s．

The Research on Mechanism of Tactile Discriminative Vibrating Frequency

Vibration signals are the carrier of fast information in tactile communication. The research on mechanism of tactile discrimination of vibrating frequency can guide the design of tactile communication. 13 subjects had been trained to distinguish the frequency of vibration signals with tactile sense for six months. The results showed that the tactile sense depended on period difference to distinguish vibration signals, whose discrimination was completed in the pallium. The minimum period difference that can be distinguished was 1 ms. The highest frequency of vibration signals that can be distinguished were 250-322 Hz, and the shortest duration of the signal was 0.2 s.