title: Effects of Noise-Induced Arousal on Chewing of Sweet Food and the Subjective Motivation to Eat.
abstract: The effects of noise-induced arousal on chewing, subjective motivation to eat, the pleasantness of sweet food, and food intake were investigated. Twenty-four healthy normal weight male subjects received cookies differing in sucrose content (2%, 11%, 18% or 27%) before, during, and after 10 min of intermittent white noise. Half of the subjects were exposed to high-level noise (95 dB(A)) to induce psychological arousal. The remaining other half were exposed to low-level noise (60 dB(A)) as a control condition. During noise exposure the high-level noise group exhibited a shorter chewing time and fewer overall chewing movements with cookies of a medium sucrose content (11% or 18%). After exposure, subjects who received the high-level noise reported a reduced desire to eat, and tended to consume less strawberry ice cream. No significant effect of noise and Noise × Sugar interaction could be detected from taste and pleasantness ratings. The findings point to a relation between arousal, hunger motivation and chewing behavior.
authors.affiliation: a Department of Biological and Clinical Psychology , Psychologisches Institut (I), Julius-Maximilians-Universität , Domerschulstraβe 13, D-97070 Würzburg , Germany.
authors.forename: M
authors.initials: M
authors.lastname: Macht
keywords: Appetite; Arousal; Chewing behavior; Noise; Sweet food