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J Neuropsychiatry Clin Neurosci. 1999 Spring;11(2):190-208.

Conventional and quantitative electroencephalography in psychiatry.

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1
Department of Neurology, University of Illinois School of Medicine, Chicago, USA.

Abstract

Electrical activity of each brain region is homeostatically regulated, resulting in predictable frequency composition of the background EEG. Replicated normative databases have established that the EEG power spectrum is independent of ethnic background. Artifact-free EEG evaluated relative to such norms displays few deviant values in healthy, normally functioning individuals. In subjects with psychiatric disorders, high proportions of abnormal findings have been reported with good concordance and high specificity and sensitivity across numerous studies, distinctive within a wide variety of disorders and often contributing to differential diagnosis and selection of treatment. New three-dimensional QEEG imaging methods offer an economical alternative to other functional brain imaging modalities.

PMID:
10333991
DOI:
10.1176/jnp.11.2.190
[Indexed for MEDLINE]
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