A new method for haptic shape discriminability detection

Yulong Liu, Jiajia Yang, Yinghua Yu, Yiyang Yu, Wu Wang, Huazhi Li, Satoshi Takahashi, Yoshimichi Ejima, Qiong Wu, Jinglong Wu

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Touch shape discrimination is not only closely related to tactile mechanoreceptors but also higher cognitive function. However, previous shape discrimination methods are difficult to complete in a short time, and the devices are complicated to operate and not user-friendly for nonpro-fessionals. Here, we propose a new method, the evaluation quantity of which is the angle discrimination threshold. In addition, to make this method easy to use for nonprofessionals, we designed a haptic angle sorting system, including the device and software. To evaluate this method, the angle sorting and two-angle discrimination experiments were compared, and it was found that partici-pants spent significantly less time in the former experiment than in the latter. At the same time, there is a strong correlation between the performance of angle sorting and two-angle discrimination, which shows that the angle threshold obtained by the new method can also be used to evaluate the ability of touch discrimination. Moreover, the angle sorting results of different age groups also further demonstrate the feasibility of the method. The efficiency of this new method and the effective-ness of the system also provide a convenient means for evaluating haptic shape discrimination, which may have potential clinical application value in the early diagnosis of peripheral neuropathy and even in the evaluation of cognitive function.

Original languageEnglish
Article number7049
JournalApplied Sciences (Switzerland)
Issue number15
Publication statusPublished - Aug 2021


  • Angle sort
  • Discrimination threshold
  • Haptic angle discrimination
  • Haptic device
  • Human haptics

ASJC Scopus subject areas

  • General Materials Science
  • Instrumentation
  • General Engineering
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes


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