Citation

Struve FA, Straumanis JJ, Patrick G. Clin. Electroencephalogr. 1994; 25(2): 63-75.

Affiliation

Psychiatry Department, Louisiana State University School of Medicine, Shreveport 71130-3932.

Copyright

(Copyright © 1994, EEG and Clinical Neuroscience Society)

DOI

unavailable

PMID

8194190

Abstract

In a previous pilot study using psychiatric patients we reported that daily marihuana users had significant elevations of (1) Absolute Alpha Power, (2) Relative Alpha Power, and (3) Interhemispheric Alpha Coherence over both frontal and frontal-central areas when contrasted with subjects who did not use marihuana. We referred to this phenomenon as Hyperfrontality of Alpha. The study presented here is a successful replication of our previous findings using new samples of subjects and identical methods. Post hoc analyses based on the combined sample from both studies suggest that variables of psychiatric diagnoses and medication did not bias our results. In addition, a discriminant function analysis using quantitative EEG variables as candidate predictors generated a 95% correct THC user versus nonuser classification accuracy which received a successful jackknife replication.

Language: en