Neural correlates of distorted body images in adolescent girls with anorexia nervosa: How is it different from major depressive disorder?


Karakuş Aydos Y., DÖVENCİOĞLU N. D., Karlı Oğuz K., ÖZDEMİR P., PEHLİVANTÜRK KIZILKAN M., Kanbur N., ...Daha Fazla

Journal of Neuropsychology, cilt.18, sa.1, ss.154-172, 2024 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 18 Sayı: 1
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1111/jnp.12340
  • Dergi Adı: Journal of Neuropsychology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Social Sciences Citation Index (SSCI), Scopus, Academic Search Premier, PASCAL, EMBASE, Linguistics & Language Behavior Abstracts, MEDLINE, Psycinfo
  • Sayfa Sayıları: ss.154-172
  • Anahtar Kelimeler: anorexia nervosa, body image, body image disorder, body image disturbance, functional magnetic resonance imaging, major depressive disorder
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Body image disturbance is closely linked to eating disorders including anorexia nervosa (AN). Distorted body image perception, dissatisfaction and preoccupation with weight and shape are often key factors in the development and maintenance of these disorders. Although the pathophysiological mechanism of body image disorder is not yet fully understood, aberrant biological processes may interfere with perceptive, cognitive and emotional aspects of body image. This study focuses on the neurobiological aspects of body image disturbance. The sample consisted of 12 adolescent girls diagnosed with AN, nine girls with major depressive disorder (MDD) and 10 without psychiatric diagnoses (HC, the healthy control group). We applied a block-design task in functional magnetic resonance imaging using participants' original and distorted overweight and underweight images. After imaging, the participants scored the images for resemblance, satisfaction and anxiety levels. The findings of this study demonstrate that overweight images elicited dissatisfaction and increased occipitotemporal activations across all participants. However, no difference was found between the groups. Furthermore, the MDD and HC groups showed increased activations in the prefrontal cortex and insula in response to underweight images compared to their original counterparts, whereas the AN group exhibited increased activations in the parietal cortex, cingulate gyrus and parahippocampal cortex in response to the same stimuli.