EEG and slow cortical potentials in anticipation of mental tasks with different hemispheric involvement

N. Birbaumer, T. Elbert, W. Lutzenberger, B. Rockstroh, J. Schward

Research output: Contribution to journalArticlepeer-review

Abstract

Mental arithmetic is supposed to be processed by the left hemisphere, while pattern matching has been considered to be processed by the right hemisphere. These different mental tasks were presented to 16 right-handed male subjects. As a further variable task difficulty was varied for the two task categories. The task presentations were preceded by 6 sec warning stimuli which indicated the level of difficulty of the task. EEG and slow cortical potentials (SCPs) were recorded from temporal and precentral leads of both hemispheres. The reference was non-cephalic. During the anticipation interval beta-activity was enhanced above the hemisphere primarily involved in the particular task. SCPs failed to show a comparably clear pattern. A late negative component showed task-dependent asymmetries prior to easy tasks, but not prior to difficult tasks.

Original languageEnglish
Pages (from-to)251-260
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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