Biofeedback produced slow brain potentials and task performance

Werner Lutzenberger, Thomas Elbert, Brigitte Rockstroh, Niels Birbaumer

Research output: Contribution to journalArticlepeer-review


Twenty subjects learned to control slow potential (SP) shifts of the brain by means of a biofeedback procedure. Depending upon the pitch of a signal tone, negative SP shifts had to be increased or reduced during intervals of 6 sec each. Visual feedback of the actual SP shift was given. Blocks of training trials alternated with blocks of test trials without any feedback of the SPs. At the end of every test trial a simple arithmetic problem had to be solved by the subjects. Subjects performed the computation in a shorter time interval if an increased negativity preceded task onset as compared to slower response times during suppression of negativity. Results suggest that cortical negativity reflects unspecific preparation for cerebral performance.

Original languageEnglish
Pages (from-to)99-111
Number of pages13
JournalBiological Psychology
Issue number1-2
Publication statusPublished - 1982

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Neuropsychology and Physiological Psychology


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