Impaired Central Processing of Emotional Faces in Anorexia Nervosa

Olga Pollatos · Beate M. Herbert · Rainer Schandry · Klaus Gramann

104 citations0/0 files storedPsychosomatic Medicine

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Eating Disorders and Behaviors Psychosomatic Disorders and Their Treatments Face Recognition and Perception

Abstract

Objectives: To elucidate the potential relationship between classification of emotional faces and impaired central processing in eating disorders and to investigate the potential mediatory role of alexithymia and depression in this relationship. Methods: Visual-evoked potentials (VEPs) to emotional faces and classification performance were assessed in 12 anorexic females and matched healthy controls. Results: Patients with anorexia nervosa showed no modulation of emotional face processing and displayed significantly increased N200 amplitudes in response to all emotional categories and decreased VEPs in response to unpleasant emotional faces in the P300 time range as compared with healthy controls. They also made more mistakes in emotional face recognition, in particular, for neutral, sad, and disgusted content. Conclusions: There are marked differences in evoked potentials and emotion recognition performances of patients with anorexia nervosa and controls in facial processing. Differences in brain dynamics might contribute to difficulties in the correct recognition of facially expressed emotions, deficits in social functioning, and in turn the maintenance of eating disorders. ED = eating disorder; ERP = event-related potential; VEP = visual-evoked potential; AN = anorexia nervosa; MDD = major depressive disorder; EEG = electroencephalography; TAS = Toronto Alexithymia Scale; BMI = body mass index; BDI = Beck Depression Inventory; STAI = State Trait Anxiety Inventory.

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References

2006Incidence, prevalence and mortality of anorexia nervosa and other eating disorders 2004Medial Prefrontal Cortex Activity Associated With Symptom Provocation in Eating Disorders 2004Medial prefrontal cortex activity associated with symptom provocation in eating disorders 2003Recovery and chronicity in anorexia nervosa 2002Reduced 5-HT2A receptor binding after recovery from anorexia nervosa 2003The recognition of emotion in the faces and voice of anorexia nervosa 2000Alexithymia and depression in eating disorders 2002Do adolescent anorexia nervosa patients have deficits in emotional functioning?

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2015Emotion recognition deficits in eating disorders are explained by co-occurring alexithymia 2012Social Cognition in Anorexia Nervosa: Evidence of Preserved Theory of Mind and Impaired Emotional Functioning 2013The relationship between anorexia nervosa and body dysmorphic disorder 2014Anorexia nervosa and its relation to depression, anxiety, alexithymia and emotional processing deficits 2013Levels of autistic traits in anorexia nervosa: a comparative psychometric study

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