articleProceedings of the National Academy of SciencesOct 19, 2015BRONZE OA

High-speed spelling with a noninvasive brain–computer interface

XCXiaogang ChenYWYijun WangMNMasaki NakanishiXGXiaorong GaoTJTzyy‐Ping Jung

Tsinghua University · Chinese Academy of Sciences · +3 more institutions

PubMed
Indexed incrossrefpubmed

Abstract

The past 20 years have witnessed unprecedented progress in brain-computer interfaces (BCIs). However, low communication rates remain key obstacles to BCI-based communication in humans. This study presents an electroencephalogram-based BCI speller that can achieve information transfer rates (ITRs) up to 5.32 bits per second, the highest ITRs reported in BCI spellers using either noninvasive or invasive methods. Based on extremely high consistency of frequency and phase observed between visual flickering signals and the elicited single-trial steady-state visual evoked potentials, this study developed a synchronous modulation and demodulation paradigm to implement the speller. Specifically, this study proposed a…

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Topics & keywords

Topics
Keywords
  • Brain–computer interface
  • Computer science
  • Information transfer
  • Demodulation
  • Interface (matter)
  • Spelling
  • Speech recognition
  • Modulation (music)
UN Sustainable Development Goals
  • Quality Education
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