Stable asymmetric interhemispheric theta power in patients with anorexia nervosa during haptic perception even after weight gain: a longitudinal study.
Identifieur interne : 000568 ( Ncbi/Curation ); précédent : 000567; suivant : 000569Stable asymmetric interhemispheric theta power in patients with anorexia nervosa during haptic perception even after weight gain: a longitudinal study.
Auteurs : Martin Grunwald [Allemagne] ; Thomas Weiss ; Bianka Assmann ; Christine EttrichSource :
- Journal of clinical and experimental neuropsychology [ 1380-3395 ] ; 2004.
English descriptors
- KwdEn :
- Adolescent, Adult, Analysis of Variance, Anorexia Nervosa (physiopathology), Body Mass Index, Brain Mapping, Case-Control Studies, Electroencephalography (methods), Exploratory Behavior (physiology), Female, G0 Phase (physiology), Humans, Longitudinal Studies, Male, Neuropsychological Tests, Psychomotor Performance (physiology), Theta Rhythm, Time Factors, Weight Gain (physiology).
- MESH :
- methods : Electroencephalography.
- physiology : Exploratory Behavior, G0 Phase, Psychomotor Performance, Weight Gain.
- physiopathology : Anorexia Nervosa.
- Adolescent, Adult, Analysis of Variance, Body Mass Index, Brain Mapping, Case-Control Studies, Female, Humans, Longitudinal Studies, Male, Neuropsychological Tests, Theta Rhythm, Time Factors.
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.
DOI: 10.1080/13803390409609785
PubMed: 15370383
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pubmed:15370383Le document en format XML
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<author><name sortKey="Ettrich, Christine" sort="Ettrich, Christine" uniqKey="Ettrich C" first="Christine" last="Ettrich">Christine Ettrich</name>
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<term>Brain Mapping</term>
<term>Case-Control Studies</term>
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<term>G0 Phase (physiology)</term>
<term>Humans</term>
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<front><div type="abstract" xml:lang="en">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.</div>
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