Discrimination between phase-locked and non-phase-locked event-related EEG activity

Electroencephalogr Clin Neurophysiol. 1995 May;94(5):381-4. doi: 10.1016/0013-4694(95)00040-6.

Abstract

Differentiation between phase-locked and non-phase-locked event-related EEG activity is an important task in the evaluation of event-related EEG activity. Event-related changes of EEG activity such as event-related desynchronization (ERD) or event-related synchronization (ERS) can be quantified by either instantaneous band power or intertrial variance calculations. In the former case the ERD or ERS can be masked by an event-related potential while in the latter it is not. Examples from sensory stimulation and movement experiments, where the ERD (ERS) is calculated by both methods, are shown and discussed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alpha Rhythm
  • Analysis of Variance
  • Brain Mapping
  • Electric Stimulation
  • Electroencephalography*
  • Evoked Potentials, Visual
  • Humans
  • Photic Stimulation
  • Signal Processing, Computer-Assisted*