Brain electrical correlates of psychological measures: Strategies and problems

F. H. Duffy, G. B. McAnulty, K. Jones, H. Als, M. Albert

Research output: Contribution to journalArticle

Abstract

We explore relationships between brain electrical activity and cognitive performance where qEEG data are correlated with psychological variables gathered at a different time. For a population of 202 healthy adults using univariate and multivariate correlation techniques in a split half replication design, we confirm prior findings that subjects with better psychological scores show shorter evoked potential (EP) latency, suggesting that speed of processing is an important factor in cognitive performance. By canonical correlation we demonstrate a consistent, replicable relationship between electrophysiological and behavioral data. We suggest that reliance upon univariate correlation may have fueled early controversies about relationships between electrophysiology and IQ. In addition we correlate psychological factors with the entire qEEG data set (both EP and spectral analyzed EEG) and demonstrate the use a multidimensional image graphics techniques to assist in visual assessment of the resulting correlation matrices.

Original languageEnglish (US)
Pages (from-to)399-412
Number of pages14
JournalBrain Topography
Volume5
Issue number4
DOIs
StatePublished - Jun 1 1993
Externally publishedYes

Keywords

  • Behavior
  • Canonical correlation
  • Correlational SPM
  • EEG spectral analysis
  • Evoked potentials
  • Factor analysis
  • Split half replication

ASJC Scopus subject areas

  • Anatomy
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Neurology
  • Clinical Neurology

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