Hedonic reactivity to visual and olfactory cues: Rapid facial electromyographic reactions are altered in anorexia nervosa

▶ Rapid zygomatic EMG reactivity to appetitive sensory cues does not increase in AN patients. ▶ There is a later increase of corrugator reactivity to food pictures during the pre-prandial state in AN patients. ▶ There is a partial dissociation between objective and subjective measures of hedonic processes. ▶ AN patients reveal a hyporeactivity of the autonomic nervous system. ▶ Automatic processing of pleasantness might be altered in AN.