[Value of quantitative electroencephalography in psychiatry]. / Intérêt de l'électroencéphalographie quantitative en psychiatrie.
Sem Hop
; 58(44): 2606-14, 1982 Dec 02.
Article
in Fr
| MEDLINE
| ID: mdl-6297054
ABSTRACT
Computerized quantitative EEG processes the signal in four sequential steps:
1) EEG sampling with rejection of artefacts; 2) Fourier analysis (power spectrum according to frequency); 3) data reduction with computation of spectral parameters in five-minute recordings on at least four EEG channels (mean frequencies, mean amplitudes in microvolts and %, with standard deviations for delta, theta, alpha and beta frequency bands); 4) data base and multivariate statistical analyses. Five main results are obtained by computerized quantitative EEG analysis in psychiatry and clinical pharmacology 1) longitudinal studies of patients before and after treatment; 2) transversal studies of homogeneous EEG groups (discrimination between tracings of residual-type or paranoid-type schizophrenic patients) comparatively with control groups (high and low alpha subjects); 3) study of psychotropic drugs profiles, prediction of action, dose-effect curves, pharmacokinetic studies, biodisponibility, correlations with plasmatic levels and behavioural or clinical psychiatric rating scales; 4) typologic classification and discrimination by multivariate analysis, studies of functional activities functional interhemispheric lateralisation of amplitudes and its variations during the course of psychotic processes; 5) new techniques computerized topo-electroencephalography (CT-EEG, BEAM technique) based on 16 EEG recordings, comparison with other imaging techniques.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Psychiatry
/
Electroencephalography
Type of study:
Diagnostic_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Humans
Language:
Fr
Journal:
Sem Hop
Year:
1982
Document type:
Article