Pleasure for visual and olfactory stimuli evoking energy-dense foods is decreased in anorexia nervosa. - Université de Bourgogne Accéder directement au contenu
Article Dans Une Revue Psychiatry Research Année : 2010

Pleasure for visual and olfactory stimuli evoking energy-dense foods is decreased in anorexia nervosa.

Résumé

Although patients with anorexia nervosa have been suggested to be anhedonic, few experiments have directly measured their sensory pleasure for a range of food and non-food stimuli. This study aimed to examine whether restrictive anorexia nervosa (AN-R) patients displayed: i) a generalized decline in sensory pleasure or only in food-related sensory pleasure; ii) a modification of hedonic responses to food cues (liking) and of the desire to eat foods (wanting) as a function of their motivational state (hunger vs. satiety) and energy density of foods (high vs. low). Forty-six female participants (AN-R n=17; healthy controls (HC) n=29) reported before/after lunch their pleasure for pictures/odorants representing foods of different energy density and non-food objects. They also reported their desire to eat the foods evoked by the sensory stimuli, and completed the Physical Anhedonia Scale and the Beck Depression Inventory. AN-R and HC participants did not differ on liking ratings when exposed to low energy-density food or to non-food stimuli. The two groups also had similar physical anhedonia scores. However, compared to HC, AN-R reported lower liking ratings for high energy food pictures regardless of their motivational state. Olfactory pleasure was reduced only during the pre-prandial state in the AN-R group. The wanting ratings showed a distinct pattern since AN-R participants reported less desire to eat the foods representing both low and high energy densities, but the effect was restricted to the pre-prandial state. Taken together these results reflect more the influence of core symptoms in anorexia nervosa (fear of gaining weight) than an overall inability to experience pleasure.

Dates et versions

hal-00761525 , version 1 (05-12-2012)

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Tao Jiang, Robert Soussignan, Daniel Rigaud, Benoist Schaal. Pleasure for visual and olfactory stimuli evoking energy-dense foods is decreased in anorexia nervosa.. Psychiatry Research, 2010, 180 (1), pp.42-7. ⟨10.1016/j.psychres.2010.04.041⟩. ⟨hal-00761525⟩
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