Articlegreen2015

Effects of Increase in Amplitude of Occipital Alpha & Theta Brain Waves on Global Functioning Level of Patients with GAD.

Mohsen Dadashi · Behrooz Birashk · Farhad Taremian · Ali Asghar Asgarnejad · Saeid Momtazi

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Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes EEG and Brain-Computer Interfaces Neural dynamics and brain function

Abstract

INTRODUCTION: The basic objective of this study is to investigate the effects of alpha and theta brain waves amplitude increase in occipital area on reducing the severity of symptoms of generalized anxiety disorder and to increase the global functioning level in patients with GAD. METHODS: This study is a quasi-experimental study with pre-test and post-test with two groups. For this purpose, 28 patients who had been referred to Sohrawardi psychiatric and clinical psychology center in Zanjan were studied based on the interview with the psychiatrist, clinical psychologist and using clinical diagnostic criteria for the Diagnostic and Statistical Manual of Mental Disorders text revision - the DSM-IV-TR Fourth Edition diagnosis of GAD, 14 subjects were studied in neurofeedback treatment group and 14 subjects in the waiting list group. Patients in both groups were evaluated at pre-test and post-test with General Anxiety Disorder Scale (GAD-7) and Global Assessment Functioning Scale (GAFs). The treatment group received fifteen 30-minute alpha training sessions and fifteen 30-minute theta brain training sessions in occipital area by neurofeedback training (treatment group). This evaluation was performed according to the treatment protocol to increase the alpha and theta waves. And no intervention was done in the waiting list group. But due to ethical issues after the completion of the study all the subjects in the waiting list group were treated. RESULTS: The results showed that increase of alpha and theta brain waves amplitude in occipital area in people with GAD can increase the global functioning level and can reduce symptoms of generalized anxiety disorder in a treatment group, but no such change was observed in the waiting list group. DISCUSSION: Increase of alpha and theta brain waves amplitude in occipital area can be useful in the treatment of people with GAD.

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References

2013Diagnostic and Statistical Manual of Mental Disorders 2006A Brief Measure for Assessing Generalized Anxiety Disorder 2005Lifetime Prevalence and Age-of-Onset Distributions of DSM-IV Disorders in the National Comorbidity Survey Replication 2005Generalized anxiety disorder: advances in research and practice 2006Worry and its Psychological Disorders 1999Anxiety: A Multidisciplinary Review 2006Applied Relaxation and Cognitive Therapy for Pathological Worry and Generalized Anxiety Disorder

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