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

Identifieur interne : 006B22 ( Main/Exploration ); précédent : 006B21; suivant : 006B23

Stable 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 [Allemagne] ; Bianka Assmann [Allemagne] ; Christine Ettrich [Allemagne]

Source :

Neuropsychology, development, and cognition. Section A, journal of clinical and experimental neuropsychology [ 1380-3395 ] ; 2004.

RBID : Pascal:04-0569368

Descripteurs français

Pascal (Inist)
- Anorexie mentale, Etude longitudinale, Sensibilité tactile, Prise poids, Rythme thêta, Encéphale, Electroencéphalographie, Asymétrie, Latéralité, Femelle, Homme.
Wicri :
- topic : Homme.

English descriptors

KwdEn :
- Adolescent, Adult, Analysis of Variance, Anorexia Nervosa (physiopathology), Anorexia nervosa, Asymmetry, Body Mass Index, Brain Mapping, Case-Control Studies, Electroencephalography, Electroencephalography (methods), Encephalon, Exploratory Behavior (physiology), Female, Follow up study, G0 Phase (physiology), Human, Humans, Laterality, Longitudinal Studies, Male, Neuropsychological Tests, Psychomotor Performance (physiology), Tactile sensitivity, Theta Rhythm, Theta rhythm, Time Factors, Weight Gain (physiology), Weight gain.
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 (T₀-T₁) to analyze treatment effects. At rest, a theta asymmetry was observed in the AN group during an acute stage of starvation (T₀) but not after weight gain (T₁). Importantly, theta asymmetry over central regions (C3-C4) was observed in the AN group during the acute stage of starvation (To) as well as after weight gain (T₁) while performing haptic exploration tasks. In the control group, we found no significant theta asymmetry neither at rest nor during haptic explorations. Results are interpreted as an over-arousal 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.

Affiliations:

Le document en format XML

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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<sub>0</sub>
-T<sub>1</sub>
) to analyze treatment effects. At rest, a theta asymmetry was observed in the AN group during an acute stage of starvation (T<sub>0</sub>
) but not after weight gain (T<sub>1</sub>
). Importantly, theta asymmetry over central regions (C3-C4) was observed in the AN group during the acute stage of starvation (To) as well as after weight gain (T<sub>1</sub>
) while performing haptic exploration tasks. In the control group, we found no significant theta asymmetry neither at rest nor during haptic explorations. Results are interpreted as an over-arousal 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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Stable asymmetric interhemispheric theta power in patients with anorexia nervosa during haptic perception even after weight gain: A longitudinal study

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

Source :

Descripteurs français

English descriptors

Abstract

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