Attention networks in adolescent anorexia nervosa

Area of Science:

• Neuroscience
• Developmental Psychology
• Psychiatry

Background:

• Anorexia nervosa (AN) often emerges during adolescence, a critical period for brain development.
• Neurocognitive deficits are documented in adults with AN, but findings in adolescents are inconsistent.
• Previous research has not fully disentangled attention network functions in adolescent AN.

Purpose of the Study:

• To comprehensively assess attention networks in adolescents with AN, independent of severe underweight status.
• To investigate the role of attention network inefficiencies in maintaining adolescent anorexia nervosa.
• To determine if attentional abnormalities in AN are attributable to starvation or are intrinsic to the disorder.

Main Methods:

• Utilized the Attention Network Test (ANT) to evaluate executive control, orienting, and alerting networks.
• Assessed 20 partially weight-restored adolescents with AN (AN-WR) and 24 healthy adolescent controls.
• Employed an approach to disentangle independent components of attention.

Main Results:

• Adolescents with AN-WR exhibited abnormal executive control network function, showing superior suppression of irrelevant information.
• The alerting network modulated this enhanced attentional suppression in the AN-WR group.
• While orienting speed was similar, AN-WR adolescents had higher error rates when reorienting attention.

Conclusions:

• Attentional abnormalities in adolescents with AN persist even in a partially weight-restored state, suggesting they are not solely starvation-related.
• Dysregulation in executive control and alerting networks may contribute to core clinical features of AN, such as attention to detail.
• These findings highlight the importance of assessing neurocognitive functions in adolescent AN for understanding and treating the disorder.