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Exploring Perceptual Intensity Properties Using Electrotactile Stimulation on Fingertips | IEEE Journals & Magazine | IEEE Xplore

Exploring Perceptual Intensity Properties Using Electrotactile Stimulation on Fingertips


Abstract:

Understanding electrotactile parametric properties is a crucial milestone in achieving intuitive haptics. Perceptual intensity is a primary property, but its exploration ...Show More

Abstract:

Understanding electrotactile parametric properties is a crucial milestone in achieving intuitive haptics. Perceptual intensity is a primary property, but its exploration remains challenging due to subjectivity. To address this problem, this study conducted two experiments on fingertips and proposed two metrics based on significant findings. Experiment 1 found a significant linear relationship (R^{2} = 0.981) between pulse amplitude (PA) and pulse width (PW) in the logarithmic plane, and proposed a metric of parameter intensity (PI) to estimate the intensity of parameters. In Experiment 2, subjective intensity (SI) was defined and measured using a scale of 0 to 10. A metric model of SI (SI model) was derived based on the linear relationship (R^{2}>0.78) between PI and measured SI. A calibration method was proposed and its prediction accuracy has been verified. An average RMSE of 11.2\% indicated an accuracy close to the subjective judgment error of 8.7\%. Results are consistent across subjects and four different electrode-skin conditions (ESC). The findings of this study provide theoretical support for SI prediction and regulation, which is significant for electrotactile feedback.
Published in: IEEE Transactions on Haptics ( Volume: 16, Issue: 4, Oct.-Dec. 2023)
Page(s): 805 - 815
Date of Publication: 30 October 2023

ISSN Information:

PubMed ID: 37903034

Funding Agency:


References

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