Flexible Electrodes for Brain–Computer Interface System

Junjie Wang, Tengjiao Wang, Haoyan Liu, Kun Wang, Kumi Moses, Zhuoya Feng, Peng Li, Wei Huang

Research output: Contribution to journalReview articlepeer-review

43 Scopus citations

Abstract

Brain–computer interface (BCI) has been the subject of extensive research recently. Governments and companies have substantially invested in relevant research and applications. The restoration of communication and motor function, the treatment of psychological disorders, gaming, and other daily and therapeutic applications all benefit from BCI. The electrodes hold the key to the essential, fundamental BCI precondition of electrical brain activity detection and delivery. However, the traditional rigid electrodes are limited due to their mismatch in Young's modulus, potential damages to the human body, and a decline in signal quality with time. These factors make the development of flexible electrodes vital and urgent. Flexible electrodes made of soft materials have grown in popularity in recent years as an alternative to conventional rigid electrodes because they offer greater conformance, the potential for higher signal-to-noise ratio (SNR) signals, and a wider range of applications. Therefore, the latest classifications and future developmental directions of fabricating these flexible electrodes are explored in this paper to further encourage the speedy advent of flexible electrodes for BCI. In summary, the perspectives and future outlook for this developing discipline are provided.

Original languageEnglish
Article number2211012
JournalAdvanced Materials
Volume35
Issue number47
DOIs
StatePublished - 23 Nov 2023

Keywords

  • brain disorders diagnosis
  • electrophysiological technique
  • flexible bioelectronics
  • human–machine interface
  • hydrogels

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