Stable asymmetric interhemispheric theta power in patients with anorexia nervosa during haptic perception even after weight gain: a longitudinal study

Journal of Clinical and Experimental Neuropsychology
Martin GrunwaldC Ettrich

Abstract

The aim of this study was to investigate the interhemispheric brain electrical asymmetries during a resting period and during haptic tasks in theta frequency band (4-8 Hz) between healthy controls (N = 10) and patients with anorexia nervosa (AN) (N = 10). Additionally, AN patients were investigated twice in a longitudinal design (T(0)-T(1)) to analyze treatment effects. At rest, a theta asymmetry was observed in the AN group during an acute stage of starvation (T(0)) but not after weight gain (T(1)). Importantly, theta asymmetry over central regions (C3-C4) was observed in the AN group during the acute stage of starvation (T(0) as well as after weight gain (T(1)) while performing haptic exploration task. In the control group, we found no significant theta asymmetry neither at rest nor during haptic explorations. Results are interpreted as an overarousal of the right hemisphere in AN patients during complex multisensory integration processing which is possibly a result of general functional deficits of the right hemisphere.

Associated Clinical Trials

Citations

Jan 26, 2013·PloS One·Dewi GuardiaMarion Luyat
Sep 23, 2014·Neurophysiologie clinique = Clinical neurophysiology·E M KhedrA A Karim
Oct 12, 2013·European Eating Disorders Review : the Journal of the Eating Disorders Association·Savani BartholdyUlrike Schmidt
Feb 27, 2010·The International Journal of Eating Disorders·Cosimo UrgesiPaolo Brambilla
Nov 26, 2015·Arquivos de neuro-psiquiatria·Leonardo Penteado NascimentoFátima Aparecida Caromano
May 23, 2012·Perception·Sascha Topolinski, Philippe Türk Pereira
Aug 10, 2020·Journal of Neuroscience Research·Vincenzo AlfanoMariachiara Longarzo
Aug 8, 2018·Frontiers in Behavioral Neuroscience·Floriana CostanzoStefano Vicari

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Anorexia Nervosa

Anorexia nervosa (AN) is a psychiatric condition characterized by severe weight loss and secondary problems associated with malnutrition. Here is the latest research on AN.