Principal component analysis of slow brain potentials during six second anticipation intervals

Werner Lutzenberger, Thomas Elbert, Brigitte Rockstroh, Niels Birbaumer

Research output: Contribution to journalArticlepeer-review

Abstract

The comparison of principal component analyses between seven experimental studies demonstrates a remarkable similarity of the extracted components. Slow scalp-recorded potentials of the brain (SPs) during a constant 6 sec foreperiod can be described by an early frontal, and a late preparatory component. Furthermore, an additional intermediate component may be retained by the PCA. This component seems to reduce the between-subject variance and often describes processes dependent on stimulus repetition. There is evidence favoring the varimaxed solution of the PCA for the parametrization of most of the experimental data.

Original languageEnglish
Pages (from-to)271-280
Number of pages10
JournalBiological Psychology
Volume13
Issue numberC
DOIs
Publication statusPublished - 1981

ASJC Scopus subject areas

  • Behavioral Neuroscience
  • Neuropsychology and Physiological Psychology

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