An unfamiliar social presence reduces facial disgust responses to food stimuli

Nath, Elizabeth C.; Cannon, Peter R.; Philipp, Michael C.

doi:10.1016/j.foodres.2019.108662

Cited by 15 publications

(18 citation statements)

References 88 publications

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“…The subjective ratings of liking, wanting, and valence were positively associated with EMG activity in the zygomatic major muscle while the participants viewed food images. These results corroborate prior findings reporting positive associations between subjective valence/liking ratings and zygomatic major EMG activity in response to food images [6,7]. Our study did not show any evident association between hedonic ratings and corrugator supercilii EMG activity, which is inconsistent with previous studies [6][7][8].…”

Section: Discussionsupporting

confidence: 65%

“…These results corroborate prior findings reporting positive associations between subjective valence/liking ratings and zygomatic major EMG activity in response to food images [6,7]. Our study did not show any evident association between hedonic ratings and corrugator supercilii EMG activity, which is inconsistent with previous studies [6][7][8]. These discrepant findings may be due to methodological differences across studies.…”

Section: Discussionsupporting

confidence: 53%

“…A few previous studies have reported that facial electromyography (EMG) signals were associated with subjective hedonic ratings while viewing food images [6][7][8]. Specifically, Greenwald et al [6] assessed ratings of valence and arousal (i.e., the quality and intensity of emotional experience, respectively) and measured facial EMG of the corrugator supercilii muscle (related to frowning) and the zygomatic major muscle (related to smiling) while participants observed multiple images, including a food image.…”

Section: Introductionmentioning

confidence: 99%

“…The valence ratings were negatively and positively associated with corrugator supercilii and zygomatic major EMG activity, respectively. Nath et al [7,8] also measured facial EMG signals from these and additional muscles and assessed liking ratings while participants viewed several different food images. The liking ratings were negatively and positively associated with EMG activity of the corrugator supercilii [7,8] and zygomatic major muscles [7], respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Nath et al [7,8] also measured facial EMG signals from these and additional muscles and assessed liking ratings while participants viewed several different food images. The liking ratings were negatively and positively associated with EMG activity of the corrugator supercilii [7,8] and zygomatic major muscles [7], respectively. Corroborating these data, other studies recorded EMG from these facial muscles while participants consumed liquid [9][10][11] or solid [12] food and showed similar associations between hedonic ratings, such as liking, wanting, and valence, and facial EMG activity of these muscles.…”

Section: Introductionmentioning

confidence: 99%

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Facial EMG Activity Is Associated with Hedonic Experiences but Not Nutritional Values While Viewing Food Images

2020

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The physiological correlates of hedonic/emotional experiences to visual food stimuli are of theoretical and practical interest. Previous psychophysiological studies have shown that facial electromyography (EMG) signals were related to subjective hedonic ratings in response to food images. However, because other data showed positive correlations between hedonic ratings and objective nutritional values of food, whether the facial EMG reactions to food images could reflect the hedonic evaluation or nutritional assessment of food remains unknown. To address this issue, we measured subjective hedonic ratings (liking, wanting, valence, and arousal) and physiological signals (facial EMG of the corrugator supercilii, zygomatic major, masseter, and suprahyoid muscles, skin potential responses, and heart rates) while participants observed food images that had objective nutritional information (caloric, carbohydrate, fat, and protein contents). The results revealed that zygomatic major EMG activity was positively correlated with ratings of liking, wanting, and valence, but not with any objective nutritional value. These data indicate that facial EMG signals in response to food images reflect subjective hedonic experiences, but not objective nutritional values, associated with the food item.

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Section: Discussionsupporting

confidence: 65%