title: Effects of Increase in Amplitude of Occipital Alpha & Theta Brain Waves on Global Functioning Level of Patients with GAD.
abstract: BACKGROUND
  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.
  
  
  CONCLUSIONS
  Increase of alpha and theta brain waves amplitude in occipital area can be useful in the treatment of people with GAD.
authors: Department of Clinical Psychology, Faculty of Behavioral Sciences & Mental Health, Tehran Institute of Psychiatry, International Compus, Iran University of Medical Sciences, Tehran, Iran.
authors: Mohsen
authors: M
authors: Dadashi
authors: Department of Clinical Psychology, Faculty of Behavioral Sciences & Mental Health, Tehran Institute of Psychiatry, Iran University of Medical Sciences, Tehran, Iran.
authors: Behrooz
authors: B
authors: Birashk
authors: Department of Clinical Psychology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
authors: Farhad
authors: F
authors: Taremian
authors: Department of Clinical Psychology, Faculty of Behavioral Sciences & Mental Health, Tehran Institute of Psychiatry, Iran University of Medical Sciences, Tehran, Iran.
authors: Ali Asghar
authors: AA
authors: Asgarnejad
authors: Department of Psychiatry, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran.
authors: Saeed
authors: S
authors: Momtazi
keywords: Generalized Anxiety Disorder; Increase of alpha brain wave amplitude; Increase of theta brain wave amplitude