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delay discounting anorexia nervosa

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https://www.readbyqxmd.com/read/27806865/altered-neural-efficiency-of-decision-making-during-temporal-reward-discounting-in-anorexia-nervosa
#1
Joseph A King, Daniel Geisler, Fabio Bernardoni, Franziska Ritschel, Ilka Böhm, Maria Seidel, Eva Mennigen, Stephan Ripke, Michael N Smolka, Veit Roessner, Stefan Ehrlich
OBJECTIVE: The ability of individuals with anorexia nervosa (AN) to resist hunger and restrict caloric intake is often believed to reflect an unusual amount of self-control. However, the underlying neural substrate is poorly understood, especially in adolescent patients. METHOD: Functional magnetic resonance imaging was used during an intertemporal choice task to probe the hemodynamic correlates of a common measurement of self-control-delayed (monetary) reward discounting-in a sample of acutely ill, predominately adolescent female patients with AN (n = 31) and age-matched healthy controls (n = 31)...
November 2016: Journal of the American Academy of Child and Adolescent Psychiatry
https://www.readbyqxmd.com/read/27301653/increased-temporal-discounting-in-bulimia-nervosa
#2
Maria Kekic, Savani Bartholdy, Jiumu Cheng, Jessica McClelland, Elena Boysen, Peter Musiat, Owen G O'Daly, Iain C Campbell, Ulrike Schmidt
OBJECTIVE: There is evidence that people with eating disorders display altered intertemporal choice behavior (the degree of preference for immediate rewards over delayed rewards). Compared to healthy controls (HC), individuals with anorexia nervosa and binge-eating disorder show decreased and increased rates of temporal discounting (TD; the devaluation of delayed rewards), respectively. This is the first study to investigate TD in people with bulimia nervosa (BN). METHOD: Thirty-nine individuals with BN (2 men) and 53 HC (9 men) completed a hypothetical monetary TD task...
June 15, 2016: International Journal of Eating Disorders
https://www.readbyqxmd.com/read/25579471/temporal-delay-discounting-in-acutely-ill-and-weight-recovered-patients-with-anorexia-nervosa
#3
F Ritschel, J A King, D Geisler, L Flohr, F Neidel, I Boehm, M Seidel, J Zwipp, S Ripke, M N Smolka, V Roessner, S Ehrlich
BACKGROUND: Patients with anorexia nervosa (AN) are characterized by a very low body weight but readily give up immediate rewards (food) for long-term goals (slim figure), which might indicate an unusual level of self-control. This everyday clinical observation may be quantifiable in the framework of the anticipation-discounting dilemma. METHOD: Using a cross-sectional design, this study compared the capacity to delay reward in 34 patients suffering from acute AN (acAN), 33 weight-recovered AN patients (recAN) and 54 healthy controls...
April 2015: Psychological Medicine
https://www.readbyqxmd.com/read/25481622/hunger-does-not-motivate-reward-in-women-remitted-from-anorexia-nervosa
#4
Christina E Wierenga, Amanda Bischoff-Grethe, A James Melrose, Zoe Irvine, Laura Torres, Ursula F Bailer, Alan Simmons, Julie L Fudge, Samuel M McClure, Alice Ely, Walter H Kaye
BACKGROUND: Hunger enhances sensitivity to reward, yet individuals with anorexia nervosa (AN) are not motivated to eat when starved. This study investigated brain response to rewards during hunger and satiated states to examine whether diminished response to reward could underlie food restriction in AN. METHODS: Using a delay discounting monetary decision task known to discriminate brain regions contributing to processing of immediate rewards and cognitive control important for decision making regarding future rewards, we compared 23 women remitted from AN (RAN group; to reduce the confounding effects of starvation) with 17 healthy comparison women (CW group)...
April 1, 2015: Biological Psychiatry
https://www.readbyqxmd.com/read/25148580/improved-planning-abilities-in-binge-eating
#5
RANDOMIZED CONTROLLED TRIAL
Rémi Neveu, Dorine Neveu, Franck Barsumian, Elsa Fouragnan, Edouard Carrier, Massimo Lai, Jocelyne Sultan, Alain Nicolas, Giorgio Coricelli
OBJECTIVE: The role of planning in binge eating episodes is unknown. We investigated the characteristics of planning associated with food cues in binging patients. We studied planning based on backward reasoning, reasoning that determines a sequence of actions back to front from the final outcome. METHOD: A cross-sectional study was conducted with 20 healthy participants, 20 bulimia nervosa (BN), 22 restrictive (ANR) and 23 binging anorexia nervosa (ANB), without any concomitant impulsive disorder...
2014: PloS One
https://www.readbyqxmd.com/read/22591835/increased-capacity-to-delay-reward-in-anorexia-nervosa
#6
Joanna E Steinglass, Bernd Figner, Staci Berkowitz, H Blair Simpson, Elke U Weber, B Timothy Walsh
Individuals with anorexia nervosa (AN) are often characterized as possessing excessive self-control and are unusual in their ability to reduce or avoid the consumption of palatable foods. This behavior promotes potentially life-threatening weight loss and suggests disturbances in reward processing. We studied whether individuals with AN showed evidence of increased self-control by examining the tendency to delay receipt of a monetary, non-food related, reward. Underweight AN (n = 36) and healthy controls (HC, n = 28) completed a monetary intertemporal choice task measuring delay discounting factor...
July 2012: Journal of the International Neuropsychological Society: JINS
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