Atypical Self-Focus Effect on Interoceptive Accuracy in Anorexia Nervosa

Area of Science:

• Psychosomatic Medicine
• Neuroscience
• Clinical Psychology

Background:

• Interoceptive abilities are significantly altered in individuals with anorexia nervosa (AN).
• While self-focus enhances interoceptive accuracy (IAcc) in healthy individuals, high body dissatisfaction in AN may elicit opposing effects.
• The study investigates the impact of self-focus on IAcc in AN and its potential changes during cognitive behavioral therapy (CBT).

Purpose of the Study:

• To examine whether self-focused attention influences interoceptive accuracy in patients with anorexia nervosa.
• To determine if this influence changes over the course of cognitive behavioral therapy.
• To compare the effects of self-focus on IAcc between AN patients and healthy controls.

Main Methods:

• Fifteen patients with AN and 15 healthy controls were assessed.
• Interoceptive accuracy (IAcc) was measured using the heartbeat perception task under self-focused ('Self') and other-focused ('Other') attention conditions.
• Body dissatisfaction was assessed using the Eating Disorder Inventory 2 (ED-2) subscale.

Main Results:

• Patients with AN exhibited higher IAcc when focusing on others' faces compared to their own.
• Healthy controls showed the opposite pattern, with higher IAcc during self-focused attention.
• IAcc remained lower in AN patients compared to controls throughout CBT, despite improvements in body dissatisfaction; higher body dissatisfaction correlated with poorer IAcc in the 'Self' condition.

Conclusions:

• Self-focused attention appears to reduce IAcc in individuals with AN, contrary to findings in healthy populations.
• Confronting patients with AN with bodily features may increase avoidance, thereby diminishing IAcc.
• These findings offer a novel perspective on interoceptive processes in AN and suggest further research into the therapeutic application of self-focus interventions.