Brain-computer communication and slow cortical potentials

Thilo Hinterberger, Stefan Schmidt, Nicola Neumann, Jürgen Mellinger, Benjamin Blankertz, Gabriel Curio, Niels Birbaumer

Research output: Contribution to journalArticle


A thought translation device (TTD) has been designed to enable direct brain-computer communication using self-regulation of slow cortical potentials (SCPs). However, accuracy of SCP control reveals high intersubject variability. To guarantee the highest possible communication speed, some important aspects of training SCPs are discussed. A baseline correction of SCPs can increase performance. Multichannel recordings show that SCPs are of highest amplitude around the vertex electrode used for feedback, but in some subjects more global distributions were observed. A new method for control of eye movement is presented. Sequential effects of trial-to-trial interaction may also cause difficulties for the user. Finally, psychophysiological factors determining SCP communication are discussed.

Original languageEnglish
Pages (from-to)1011-1018
Number of pages8
JournalIEEE Transactions on Biomedical Engineering
Issue number6
Publication statusPublished - Jun 2004


  • Brain-computer interface (BCI)
  • Slow cortical potentials (SCP)
  • Thought translation device (TTD)

ASJC Scopus subject areas

  • Biomedical Engineering

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  • Cite this

    Hinterberger, T., Schmidt, S., Neumann, N., Mellinger, J., Blankertz, B., Curio, G., & Birbaumer, N. (2004). Brain-computer communication and slow cortical potentials. IEEE Transactions on Biomedical Engineering, 51(6), 1011-1018.