Quantitative Electroencephalography (QEEG) as an Innovative Diagnostic Tool in Mental Disorders.

Marta Kopańska,Agnieszka Banaś-Ząbczyk,Danuta Ochojska,Agnieszka Dejnowicz-Velitchkov

doi:10.3390/ijerph19042465

Abstract

Quantitative electroencephalography (QEEG) is becoming an increasingly common method of diagnosing neurological disorders and, following the recommendations of The American Academy of Neurology (AAN) and the American Clinical Neurophysiology Society (ACNS), it can be used as a complementary method in the diagnosis of epilepsy, vascular diseases, dementia, and encephalopathy. However, few studies are confirming the importance of QEEG in the diagnosis of mental disorders and changes occurring as a result of therapy; hence, there is a need for analyses in this area. The aim of the study is analysis of the usefulness of QEEG in the diagnosis of people with generalized anxiety disorders. Our research takes the form of case studies. The paper presents an in-depth analysis of the QEEG results of five recently studied people with a psychiatric diagnosis: generalized anxiety disorder. The results show specific pattern amplitudes at C3 and C4. In all of the examined patients, two dependencies are repeated: low contribution of the sensorimotor rhythm (SMR) wave amplitudes and high beta2 wave amplitudes, higher or equal to the alpha amplitudes. The QEEG study provides important information about the specificity of brain waves of people with generalized anxiety disorder; therefore, it enables the preliminary and quick diagnosis of dysfunction. It is also possible to monitor changes due to QEEG, occurring as a result of psychotherapy, pharmacological therapy and EEG-biofeedback.

Highlights

Quantitative electroencephalography (QEEG) data were collected by a researcher with
We present the results of five recently admitted patients with generalized anxiety disorder: AD—female 47 years old, GG—female 45 years old, SK—female 50 years old, TD—female 48 years old, and GP—male 33 years old
The amplitudes of the beta1 and beta2 waves increase significantly concerning the amplitudes of the sensorimotor rhythm (SMR) wave

Summary

Introduction

It has its advantages, namely, it makes us more vigilant in various difficult situations, and protects against threats. It makes us more vigilant in various difficult situations, and protects against threats An anxiety has no specific cause; it is a subjective phenomenon that triggers a sense of threat, and it can refer to imaginary situations where the individual anticipates what may happen and is afraid of certain situations that are not justified. The method of analyzing objectively functioning factors depends on one’s subjective interpretation resulting from individual predispositions, largely related to the interaction of biological factors and psychosocial experiences of a given individual [1]. Taking into account the latest ICD-11 classification, 4.0/)

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