Avoidance habit learning in adolescents and young women with anorexia nervosa: an fMRI study / Julius HENNIG in Journal of Child Psychology and Psychiatry, 67-1 (January 2026)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 67-1 (January 2026) . - p.79-91 Titre : Avoidance habit learning in adolescents and young women with anorexia nervosa: an fMRI study Type de document : texte imprimé Auteurs : Julius HENNIG, Auteur ; Ilka BOEHM, Auteur ; Katharina ZWOSTA, Auteur ; Joseph A. KING, Auteur ; Daniel GEISLER, Auteur ; Hannes RUGE, Auteur ; Maria SEIDEL, Auteur ; Fabio BERNARDONI, Auteur ; Inger HELLERHOFF, Auteur ; Arne DOOSE, Auteur ; Sophie PAULIGK, Auteur ; Henri LESCHZINSKI, Auteur ; Veit ROESSNER, Auteur ; Uta WOLFENSTELLER, Auteur ; Stefan EHRLICH, Auteur Article en page(s) : p.79-91 Langues : Anglais (eng) Mots-clés : Adolescence  neuroimaging  habitual behavior  avoidance  eating disorder Index. décimale : PER Périodiques Résumé : Background Anorexia nervosa (AN), often with an onset in adolescence, is a complex eating disorder characterized by distorted body image, fear of weight gain, and extreme food restriction, leading to severe underweight. Excessive goal pursuit and avoidance behaviors have been proposed as key factors in AN, which over time may become over-trained into habits. Methods This study investigated the behavioral and neural correlates of habit learning in AN with an experiment consisting of three consecutive phases: (1) training goal-directed behavior, (2) avoidance learning, and (3) a habit test. Forty-five acutely underweight adolescent female patients with AN and 45 age-matched healthy control participants underwent an fMRI scan. Results No behavioral group differences were evident either during learning of avoidance habits or when testing habit strength. Importantly, however, the AN group showed both generally superior task performance and increased involvement of the frontoparietal brain regions during habit learning. Conclusions Collectively, our findings provide novel evidence suggesting that excessive goal pursuit may predominate in young AN in an avoidance learning context. Future research should examine if this tendency develops into habit learning over time and investigate the speed and strength of avoidance habit formation in adults with a longer history of AN to further elucidate the intricate dynamic between goal-directed and habitual processes in the disorder. En ligne : https://doi.org/10.1111/jcpp.70019 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=577 [article] Avoidance habit learning in adolescents and young women with anorexia nervosa: an fMRI study [texte imprimé] / Julius HENNIG, Auteur ; Ilka BOEHM, Auteur ; Katharina ZWOSTA, Auteur ; Joseph A. KING, Auteur ; Daniel GEISLER, Auteur ; Hannes RUGE, Auteur ; Maria SEIDEL, Auteur ; Fabio BERNARDONI, Auteur ; Inger HELLERHOFF, Auteur ; Arne DOOSE, Auteur ; Sophie PAULIGK, Auteur ; Henri LESCHZINSKI, Auteur ; Veit ROESSNER, Auteur ; Uta WOLFENSTELLER, Auteur ; Stefan EHRLICH, Auteur . - p.79-91. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 67-1 (January 2026) . - p.79-91 Mots-clés : Adolescence  neuroimaging  habitual behavior  avoidance  eating disorder Index. décimale : PER Périodiques Résumé : Background Anorexia nervosa (AN), often with an onset in adolescence, is a complex eating disorder characterized by distorted body image, fear of weight gain, and extreme food restriction, leading to severe underweight. Excessive goal pursuit and avoidance behaviors have been proposed as key factors in AN, which over time may become over-trained into habits. Methods This study investigated the behavioral and neural correlates of habit learning in AN with an experiment consisting of three consecutive phases: (1) training goal-directed behavior, (2) avoidance learning, and (3) a habit test. Forty-five acutely underweight adolescent female patients with AN and 45 age-matched healthy control participants underwent an fMRI scan. Results No behavioral group differences were evident either during learning of avoidance habits or when testing habit strength. Importantly, however, the AN group showed both generally superior task performance and increased involvement of the frontoparietal brain regions during habit learning. Conclusions Collectively, our findings provide novel evidence suggesting that excessive goal pursuit may predominate in young AN in an avoidance learning context. Future research should examine if this tendency develops into habit learning over time and investigate the speed and strength of avoidance habit formation in adults with a longer history of AN to further elucidate the intricate dynamic between goal-directed and habitual processes in the disorder. En ligne : https://doi.org/10.1111/jcpp.70019 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=577

Dynamic functional connectivity in anorexia nervosa: alterations in states of low connectivity and state transitions / Eva MENNIGEN ; Daniel GEISLER ; Nico W. POLLER ; Katrin GRAMATKE ; Vince D. CALHOUN ; Veit ROESSNER ; Joseph A. KING ; Stefan EHRLICH in Journal of Child Psychology and Psychiatry, 65-10 (October 2024)  

Public ISBD [article]  inJournal of Child Psychology and Psychiatry > 65-10 (October 2024) . - p.1299-1310 Titre : Dynamic functional connectivity in anorexia nervosa: alterations in states of low connectivity and state transitions Type de document : texte imprimé Auteurs : Eva MENNIGEN, Auteur ; Daniel GEISLER, Auteur ; Nico W. POLLER, Auteur ; Katrin GRAMATKE, Auteur ; Vince D. CALHOUN, Auteur ; Veit ROESSNER, Auteur ; Joseph A. KING, Auteur ; Stefan EHRLICH, Auteur Article en page(s) : p.1299-1310 Langues : Anglais (eng) Mots-clés : Eating disorder  anorexia nervosa  dynamic functional connectivity  resting state Index. décimale : PER Périodiques Résumé : Background The onset of anorexia nervosa (AN) frequently occurs during adolescence and is associated with preoccupation with body weight and shape and extreme underweight. Altered resting state functional connectivity in the brain has been described in individuals with AN, but only from a static perspective. The current study investigated the temporal dynamics of functional connectivity in adolescents with AN and how it relates to clinical features. Method 99 female patients acutely ill with AN and 99 pairwise age-matched female healthy control (HC) participants were included in the study. Using resting-state functional MRI data and an established sliding-window analytic approach, we identified dynamic resting-state functional connectivity states and extracted dynamic indices such as dwell time (the duration spent in a state), fraction time (the proportion of the total time occupied by a state), and number of transitions (number of switches) from one state to another, to test for group differences. Results Individuals with AN had relatively reduced fraction time in a mildly connected state with pronounced connectivity within the default mode network (DMN) and an overall reduced number of transitions between states. Conclusions These findings revealed by a dynamic, but not static analytic approach might hint towards a more ?rigid? connectivity, a phenomenon commonly observed in internalizing mental disorders, and in AN possibly related to a reduction in energetic costs as a result of nutritional deprivation. En ligne : https://doi.org/10.1111/jcpp.13970 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=535 [article] Dynamic functional connectivity in anorexia nervosa: alterations in states of low connectivity and state transitions [texte imprimé] / Eva MENNIGEN, Auteur ; Daniel GEISLER, Auteur ; Nico W. POLLER, Auteur ; Katrin GRAMATKE, Auteur ; Vince D. CALHOUN, Auteur ; Veit ROESSNER, Auteur ; Joseph A. KING, Auteur ; Stefan EHRLICH, Auteur . - p.1299-1310. Langues : Anglais (eng) in Journal of Child Psychology and Psychiatry > 65-10 (October 2024) . - p.1299-1310 Mots-clés : Eating disorder  anorexia nervosa  dynamic functional connectivity  resting state Index. décimale : PER Périodiques Résumé : Background The onset of anorexia nervosa (AN) frequently occurs during adolescence and is associated with preoccupation with body weight and shape and extreme underweight. Altered resting state functional connectivity in the brain has been described in individuals with AN, but only from a static perspective. The current study investigated the temporal dynamics of functional connectivity in adolescents with AN and how it relates to clinical features. Method 99 female patients acutely ill with AN and 99 pairwise age-matched female healthy control (HC) participants were included in the study. Using resting-state functional MRI data and an established sliding-window analytic approach, we identified dynamic resting-state functional connectivity states and extracted dynamic indices such as dwell time (the duration spent in a state), fraction time (the proportion of the total time occupied by a state), and number of transitions (number of switches) from one state to another, to test for group differences. Results Individuals with AN had relatively reduced fraction time in a mildly connected state with pronounced connectivity within the default mode network (DMN) and an overall reduced number of transitions between states. Conclusions These findings revealed by a dynamic, but not static analytic approach might hint towards a more ?rigid? connectivity, a phenomenon commonly observed in internalizing mental disorders, and in AN possibly related to a reduction in energetic costs as a result of nutritional deprivation. En ligne : https://doi.org/10.1111/jcpp.13970 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=535

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