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Volume 23, Issue 134 (4-2024)
Journal of Psychological Science 2024, 23(134): 253-271 |
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Pourebrahimi M, Sarafraz M, Hadianfard H, Mohammadi N. (2024). Comparing of the asymmetry of brain waves in the resting stage and imaginary exposure to obsession-provoking situation in people with obsessive-compulsive disorder with harm avoidance motivation. Journal of Psychological Science. 23(134), 253-271. doi:10.52547/JPS.23.134.253
URL: http://psychologicalscience.ir/article-1-2426-en.html
URL: http://psychologicalscience.ir/article-1-2426-en.html
Assistant Professor, Department of Clinical Psychology, Faculty of Education and Psychology, Shiraz University, Shiraz, Iran. , msarafraz@shirazu.ac.ir
Abstract: (455 Views)
Background: Obsessive-compulsive disorder is a heterogeneous disorder with different symptoms and different subgroups. To understand this disorder and investigate its neurological basis, most of the studies have examined the function of the frontal lobe of affected people in a resting state, regardless of the heterogeneity of its symptoms and subgroups; however, the quantitative electroencephalography characteristics of all brain channels for different subgroups of this disorder have not been investigated separately and in different situations.
Aims: This study was conducted to investigate the index of asymmetry in all brain lobes of people with OCD with harm avoidance (HA) motivation in an imaginary exposure to an obsessive-provoking situation compared to the resting stage.
Methods: The current research was practical in terms of purpose and experimental in terms of method. The statistical population consisted of all OCD patients with harm avoidance motivation who were referred to the Peyvand Counselling Center in Kerman in 2022-2023. To conduct the study, 45 people were selected by a convenience method based on inclusion criteria and were evaluated by completing the Yale-Brown Obsessive Compulsive Scale (Goodman et al., 1986), Obsessive-Compulsive Core Dimensions Interview (Summerfeldt et al., 2014), Obsessive-compulsive Core Dimensions Questionnaire (Summerfeldt et al., 1999) and EEG recording. The obtained data were quantified by the Fourier transform method and statistically analyzed using paired t test and SPSS-26 software.
Results: The results showed a significant increase in theta waves in the left frontal lobe (FP1-FP2 and F3-F4), alpha waves in the left frontal lobe (F3-F4 and F7-F8) and left temporal lobe (T3-T4), and beta waves in the right parietal lobe (P3-P4) (p< 0.01).
Conclusion: The results indicated the involvement of slow waves of the left frontal and temporal lobes, and fast waves of the right parietal lobe during exposure in OCD. These findings provide the possibility of using noninvasive neurophysiological methods in the more accurate treatment of this subgroup and encourage further research on quantitative electroencephalographic features as possible biomarkers for other homogeneous subtypes of OCD.
Aims: This study was conducted to investigate the index of asymmetry in all brain lobes of people with OCD with harm avoidance (HA) motivation in an imaginary exposure to an obsessive-provoking situation compared to the resting stage.
Methods: The current research was practical in terms of purpose and experimental in terms of method. The statistical population consisted of all OCD patients with harm avoidance motivation who were referred to the Peyvand Counselling Center in Kerman in 2022-2023. To conduct the study, 45 people were selected by a convenience method based on inclusion criteria and were evaluated by completing the Yale-Brown Obsessive Compulsive Scale (Goodman et al., 1986), Obsessive-Compulsive Core Dimensions Interview (Summerfeldt et al., 2014), Obsessive-compulsive Core Dimensions Questionnaire (Summerfeldt et al., 1999) and EEG recording. The obtained data were quantified by the Fourier transform method and statistically analyzed using paired t test and SPSS-26 software.
Results: The results showed a significant increase in theta waves in the left frontal lobe (FP1-FP2 and F3-F4), alpha waves in the left frontal lobe (F3-F4 and F7-F8) and left temporal lobe (T3-T4), and beta waves in the right parietal lobe (P3-P4) (p< 0.01).
Conclusion: The results indicated the involvement of slow waves of the left frontal and temporal lobes, and fast waves of the right parietal lobe during exposure in OCD. These findings provide the possibility of using noninvasive neurophysiological methods in the more accurate treatment of this subgroup and encourage further research on quantitative electroencephalographic features as possible biomarkers for other homogeneous subtypes of OCD.
Keywords: obsessive-compulsive disorder, harm avoidance, asymmetry, quantitative electroencephalography
Type of Study: Research |
Subject:
Special
Received: 2024/01/27 | Accepted: 2024/03/29 | Published: 2024/04/20
Received: 2024/01/27 | Accepted: 2024/03/29 | Published: 2024/04/20
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This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) License. |
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)