مقایسه اتصالات عملکردی امواج مغز در حالت استراحت و مواجهه تصوری در زیرگروه اختلال وسواسی-جبری با انگیزه اجتناب از آسیب

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دکتری روان‌شناسی بالینی، گروه روانشناسی بالینی، دانشکده علوم تربیتی و روانشناسی، دانشگاه شیراز، شیراز، ایران.

2 دانشیار، گروه روانشناسی بالینی، دانشکده علوم تربیتی و روانشناسی، دانشگاه شیراز، شیراز، ایران.

چکیده

هدف: این پژوهش با هدف مقایسه اتصالات عملکردی امواج مغز در حالت استراحت و مواجهه تصوری با موقعیت برانگیزاننده وسواس در زیرگروه اختلال وسواسی-جبری با انگیزه اجتناب از آسیب انجام شد.

روش: طرح پژوهش از نوع توصیفی-تحلیلی و درون‌گروهی با مقایسه در دو وضعیت عملکردی (استراحت و مواجهه تصوری) بود. نمونه پژوهش، ۴۵ بیمار مبتلا به اختلال وسواسی-جبری با انگیزه اجتناب از آسیب مراجعه‌کننده به مرکز مشاوره پیوند شهر کرمان در سال ۱۴۰۲ بودند که با روش نمونه‌گیری هدفمند انتخاب و با مقیاس وسواس جبری‌ییل-براون (۱۹۸۶)، مصاحبه ابعاد اصلی وسواسی-جبری (۲۰۱۴)، پرسشنامه ابعاد اصلی صفت وسواسی-جبری (۲۰۱۴) و ثبت امواج الکتریکی مغز مورد ارزیابی قرار گرفتند. تجزیه و تحلیل داده‌ها با آزمون تی زوجی انجام گرفت.

یافته‌ها: نتایج افزایش اتصال عملکردی موج دلتا در فرونتال و فرونتو-سنترال، و موج تتا در فرونتـو -سـنترال و فرونتـو –تمپورال، کاهش اتصال عملکردی موج آلفا در نواحی درون نیمکره‌ای فرونتو-تمپورال، فرونتو-پاریتال و فرونتو-اکسیپیتال به ویژه سمت راست و بین نیمکره‌ای در لوب‌های فرونتال و تمپورال، و موج بتا در فرونتال، فرونتو-تمپورال و فرونتو-اکسیپیتال را در وضعیت مواجهه تصوری نسبت به حالت استراحت نشان داد (۰۱/۰>p).

نتیجه‌گیری: بنابراین نتایج تغییرات قابل توجهی را در اتصالات عملکردی تمام امواج و به طور گسترده در کل شبکه مغز در وضعیت مواجهه تصوری نسبت به حالت استراحت نشان دادند. این یافته‌ها تحقیقات بیشتر دربارة الگوی اتصالات عملکردی امواج مغز سایر زیرگروه‌های همگن اختلال وسواس و مقایسه آن‌ها با یکدیگر را تشویق می‌کند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Comparing Functional Connections of Brain Waves in Resting State and Imaginary Exposure in Obsessive-Compulsive Disorder Subgroup with Harm Avoidance Motivation

نویسندگان [English]

  • Mahjoubeh Pourebrahimi 1
  • MehdiReza Sarafraz 2
1 Ph.D. of Clinical Psychology, Department of Clinical Psychology, Faculty of Educational Sciences and Psychology, Shiraz University, Shiraz, Iran.
2 Associate Professor, Department of Clinical Psychology, Faculty of Educational Sciences and Psychology, Shiraz University, Shiraz, Iran.
چکیده [English]

Aim: This study compared functional brain connectivity patterns during resting state and imaginal exposure to obsession-provoking stimuli in individuals with obsessive-compulsive disorder (OCD) characterized by harm-avoidance motivation.
 
Method: A within-subject descriptive-analytical design was used. Forty-five individuals with OCD were recruited from a counseling center in Kerman during 2023–2024 using purposive sampling. Participants completed standardized clinical assessments and underwent EEG recording during resting and imaginal exposure conditions. Data were analyzed using paired t-tests.
 
Results: Imaginal exposure was associated with increased delta and theta connectivity in frontal and fronto-central regions, and decreased alpha and beta connectivity across multiple intra- and interhemispheric regions compared to resting state (p < 0.01).
 
Conclusion: Imaginal exposure induces widespread alterations in functional connectivity across frequency bands. These findings support further subgroup-specific investigations of OCD neurophysiology.

کلیدواژه‌ها [English]

  • Functional Connections
  • Harm Avoidance
  • Obsessive-Compulsive Disorder
  • Quantitative Electroencephalography

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