A Statistical Procedure for the Evaluation of Presence/Non-Presence of Stimulus-Related EEG Activity,

Abstract

Averaging of a sufficient number of stimulus-related sample functions is a commonly applied method for the demonstration of evoked activity in the electroencephalogram (EEG). However, problems may arise in the visual evaluation of averaged waveforms when the signal-to-noise ratio is low, such as for instance in certain cerebral disease conditions, or when the intensity of the stimuli is low (threshold studies). In such situations the question of presence or not of evoked activity may be of material importance. Even experienced observers will find it difficult to give a reliable answer if their judgement has to depend only on visual assessment of the averaged waveforms obtained. A statistical test for the presence of evoked activity may be a guide to the correct decision in such cases. (js)

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1988
Accession Number
ADP006079

Entities

People

  • Nils I. Bachen

Organizations

  • AGARD

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Aerospace Medicine
  • Central Nervous System
  • Demonstrations
  • Electroencephalography
  • Intensity
  • Judgment
  • Materials
  • Nervous System
  • Observers
  • Statistical Tests
  • Test And Evaluation
  • Waveforms

Fields of Study

  • Psychology

Readers

  • Neuroscience
  • Radio communications and signal processing.
  • Regression Analysis.