Volume 12, Issue 5 (September & October 2021)
BCN 2021, 12(5): 675-680 |
Back to browse issues page
Sina Shafiezadeh1 
, Mansoureh Eshghi1 , Zahra Dokhaei1 , Hossein Mohajeri2 , Atiyeh MohammadShirazi3 , Sara Mirsadeghi3 , Peyman Hasani Abharian * 1
, Mansoureh Eshghi1 , Zahra Dokhaei1 , Hossein Mohajeri2 , Atiyeh MohammadShirazi3 , Sara Mirsadeghi3 , Peyman Hasani Abharian * 1
1- Institute for Cognitive Science Studies, Tehran, Iran.
2- Faculty of Humanities, Tarbiat Modares University, Tehran, Iran.
3- Department of Brain and Cognitive Science, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.
2- Faculty of Humanities, Tarbiat Modares University, Tehran, Iran.
3- Department of Brain and Cognitive Science, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran.
Abstract:
Introduction: Obsessive-Compulsive Disorder (OCD) is one of the most common debilitating mental disorders with a prevalence rate of 2% to 3% in the general population. Previous studies have indicated abnormalities in the dorsolateral prefrontal cortex (DLPFC) of OCD patients; thus, we decided to use transcranial Direct Current Stimulation (tDCS) to decline these patients’ symptoms.
Methods: A total of 24 patients with OCD participated in this study with the hope of improvement after the application of tDCS. The subjects were randomly assigned to three groups of Sham, Right DLPFC, and Left DLPFC. tDCS was applied for five consecutive days and in each session, patients were subjected to 2 mA current flow for two 15 minutes followed by a 10-minute rest in between (every session lasted for 40 minutes).
Results: Subsequently, the changes in obsessive-compulsive level and cognitive functions were evaluated via Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) and Depression, Anxiety, and Stress Scale 21 (DASS-21) by comparing the results before (pre-test) and after (post-test) tDCS treatment.
Conclusion: Ultimately, the scores of the Yale-Brown scale in the Left DLPFC group showed significant changes after treatment with tDCS (mean difference compared to the sham group: -6.18 and P≤0.05). Hereupon, this study demonstrated that transcranial direct current stimulation may cause improvements in symptoms of OCD.
Methods: A total of 24 patients with OCD participated in this study with the hope of improvement after the application of tDCS. The subjects were randomly assigned to three groups of Sham, Right DLPFC, and Left DLPFC. tDCS was applied for five consecutive days and in each session, patients were subjected to 2 mA current flow for two 15 minutes followed by a 10-minute rest in between (every session lasted for 40 minutes).
Results: Subsequently, the changes in obsessive-compulsive level and cognitive functions were evaluated via Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) and Depression, Anxiety, and Stress Scale 21 (DASS-21) by comparing the results before (pre-test) and after (post-test) tDCS treatment.
Conclusion: Ultimately, the scores of the Yale-Brown scale in the Left DLPFC group showed significant changes after treatment with tDCS (mean difference compared to the sham group: -6.18 and P≤0.05). Hereupon, this study demonstrated that transcranial direct current stimulation may cause improvements in symptoms of OCD.
Keywords: Obsessive-Compulsive Disorder, Dorsolateral prefrontal cortex, Transcranial direct current stimulation, Yale-Brown test
Type of Study: Original |
Subject:
Cognitive Neuroscience
Received: 2019/07/29 | Accepted: 2020/08/10 | Published: 2021/09/1
Received: 2019/07/29 | Accepted: 2020/08/10 | Published: 2021/09/1
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |