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Altered multisensory temporal integration in obesity

Scarpina, Federica and Migliorati, Daniele and Marzullo, Paolo and Mauro, Alessandro and Scacchi, Massimo and Costantini, Marcello (2016) 'Altered multisensory temporal integration in obesity.' Scientific Reports, 6 (1). 28382-. ISSN 2045-2322

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Eating is a multisensory behavior. The act of placing food in the mouth provides us with a variety of sensory information, including gustatory, olfactory, somatosensory, visual, and auditory. Evidence suggests altered eating behavior in obesity. Nonetheless, multisensory integration in obesity has been scantily investigated so far. Starting from this gap in the literature, we seek to provide the first comprehensive investigation of multisensory integration in obesity. Twenty male obese participants and twenty male healthy-weight participants took part in the study aimed at describing the multisensory temporal binding window (TBW). The TBW is defined as the range of stimulus onset asynchrony in which multiple sensory inputs have a high probability of being integrated. To investigate possible multisensory temporal processing deficits in obesity, we investigated performance in two multisensory audiovisual temporal tasks, namely simultaneity judgment and temporal order judgment. Results showed a wider TBW in obese participants as compared to healthy-weight controls. This holds true for both the simultaneity judgment and the temporal order judgment tasks. An explanatory hypothesis would regard the effect of metabolic alterations and low-grade inflammatory state, clinically observed in obesity, on the temporal organization of brain ongoing activity, which one of the neural mechanisms enabling multisensory integration.

Item Type: Article
Uncontrolled Keywords: Humans; Obesity; Body Weight; Body Mass Index; Acoustic Stimulation; Case-Control Studies; Photic Stimulation; Feeding Behavior; Auditory Perception; Time Perception; Visual Perception; Judgment; Adult; Middle Aged; Male
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: Faculty of Science and Health
Faculty of Science and Health > Psychology, Department of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 12 Dec 2016 13:57
Last Modified: 06 Jan 2022 14:41

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