ArticleJournal of neuroengineering and rehabilitation2026
Dynamic current ratio control and biophysical modeling for personalised electro-tactile perception.
Article in Journal of neuroengineering and rehabilitation, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The rapid development of virtual reality and human-computer interaction technology has put forward higher requirements for the authenticity and user experience of tactile feedback technology. Electrotactile feedback technology has become an important means to realise virtual tactile interaction due to its advantages of miniaturisation, high responsiveness and low power consumption. However, current electrotactile feedback technologies still have significant shortcomings in finger physiological structure modelling accuracy, individual difference adaptation capability and system integration effectiveness. Especially under complex tactile patterns, traditional single-electrode structures suffer from issues such as significant current diffusion and insufficient spatial resolution. For this reason, we report a centre-periphery synergistic electrode array, which uses peripheral auxiliary electrodes to locally constrain and guide current paths, effectively reducing current diffusion between adjacent stimulation channels and enhancing the spatial focusing capability and tactile perception precision of electrical stimulation. Based on this, we have constructed a high-precision simulation model of finger biophysical electrotactile feedback. Based on the finite element analysis of the multilayer tissue structure of the finger, the current conduction and tactile response characteristics within the tissue were accurately portrayed. The simulation research reveals a dynamic electrical stimulation mode modulation method, which can stably achieve the two main tactile sensory modes of vibration and pressure under the condition of appropriately adjusting the ratio of inhibition to stimulation current amplitude and can adapt to the personalised needs of different users. A multidimensional electrotactile feedback system with hardware and software synergy was further developed and fully validated by subject experiments. The results show that, compared with the traditional method, this system significantly improves tactile realism and user comfort, achieving up to a 39.4% increase in subjective scores, which effectively addresses the challenge of personalized adaptation in electrotactile feedback. In summary, this research provides a new theoretical basis and practical method for the development of tactile feedback technology in immersive virtual reality and human-computer interaction systems, which has a broad application prospect.
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