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人手指柔性触觉感知的记忆特性

刘佳, 宋爱国

东南大学仪器科学与工程学院.江苏,南京 210096

摘要

触觉再现技术是当前虚拟现实和远程操作机器人领域的前沿，而柔性触觉则是其重要的研究内容。触觉再现接口的设计需要充分研究人手的触觉感知特性。该文在柔性触觉装置上研究了人手指柔性触觉记忆特性。先通过回忆性实验确定人手指的柔性触觉记忆容量，在记忆容量范围内又进行了再认性实验，对人手指的柔性触觉记忆反应时间进行分析。该实验方法简单有效，得出的结论不仅可以用来改进触觉再现装置的设计，而且为触觉再现技术的研究提供了生理学依据。

关键词： 柔性触觉感知; 触觉记忆容量; 再认性实验; 反应时间

Remembrance characteristic of softness haptic perception in human fingertips

Liu Jia, Song Aiguo

Department of lnstrument Science and Technology, Southeast University.Nanjing 210096,Jiangsu

Abstract

Many applications in virtual reality and telerobot call for the implementation of displaying the human softness haptics on the object being touched. Although there are lots of literatures on discrimination threshold for displacement, force magnitude, shape and viscosity, there is still a lack of research on remembrance of softness haptic perception in human fingertips. Such research is needed in designing haptic rendering and display system. In this paper, a novel softness haptic display device based on deformable length of elastic element control was adopted as a test device to study the human fingertip's ability of remembrance of softness haptic perception. According to the recall experiment and recognition experiment, the softness haptic memory span and reaction time were discussed. From the experimental results, some important conclusions have been obtained： （1） human softness haptic memory span is 3 to 4 items, which is smaller than visual memory span and auditory memory span; （2） it is more difficult for people to remember hard objects than soft objects.

Key words: softness haptic perception;haptic memory span;recognition test;reaction time

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引用本文：

刘佳, 宋爱国. 人手指柔性触觉感知的记忆特性[J]. 生理学报 2007; 59 (3): 387-392.

Liu Jia, Song Aiguo. Remembrance characteristic of softness haptic perception in human fingertips. Acta Physiol Sin 2007; 59 (3): 387-392 (in Chinese with English abstract).