2020 International brain–computer interface competition: A review

Ji Hoon Jeong, Jeong Hyun Cho, Young Eun Lee, Seo Hyun Lee, Gi Hwan Shin, Young Seok Kweon, José del R. Millán, Klaus Robert Müller, Seong Whan Lee

Research output: Contribution to journalReview articlepeer-review

15 Citations (Scopus)


The brain-computer interface (BCI) has been investigated as a form of communication tool between the brain and external devices. BCIs have been extended beyond communication and control over the years. The 2020 international BCI competition aimed to provide high-quality neuroscientific data for open access that could be used to evaluate the current degree of technical advances in BCI. Although there are a variety of remaining challenges for future BCI advances, we discuss some of more recent application directions: (i) few-shot EEG learning, (ii) micro-sleep detection (iii) imagined speech decoding, (iv) cross-session classification, and (v) EEG(+ear-EEG) detection in an ambulatory environment. Not only did scientists from the BCI field compete, but scholars with a broad variety of backgrounds and nationalities participated in the competition to address these challenges. Each dataset was prepared and separated into three data that were released to the competitors in the form of training and validation sets followed by a test set. Remarkable BCI advances were identified through the 2020 competition and indicated some trends of interest to BCI researchers.

Original languageEnglish
Article number898300
JournalFrontiers in Human Neuroscience
Publication statusPublished - 2022 Jul 22

Bibliographical note

Publisher Copyright:
Copyright © 2022 Jeong, Cho, Lee, Lee, Shin, Kweon, Millán, Müller and Lee.


  • brain-computer interface (BCI)
  • competition
  • electroencephalogram
  • neural decoding
  • open datasets

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Neurology
  • Psychiatry and Mental health
  • Biological Psychiatry
  • Behavioral Neuroscience


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