Left caloric vestibular stimulation as a tool to reveal implicit and explicit parameters of body representation

Consciousness and Cognition
A SeddaG Bottini

Abstract

Homeostatic parameters, such as temperature, are related to body representation. In this study, we measured whether caloric vestibular stimulation (CVS) alters body temperature and tactile processing, and if in the direction predicted by a holistic body matrix representation. Skin temperature and tactile two-point discrimination (TPD) acuity were measured for both arms before, immediately after and with a delay from CVS. Participants were also administered a personality questionnaire and an anxiety inventory to rule out confounding factors. Two control experiments were planned to exclude casual variations. Our results show that temperature drops significantly in both arms after CVS. CVS also induces a bilateral improvement in tactile acuity (even though not immediately after but in the delayed condition). Finally, these effects are not due to learning, as demonstrated by the control experiment. In summary, our results suggest that vestibular stimulation updates body representation, supporting the evidence in favor of a body matrix.

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Citations

Sep 6, 2018·Cyberpsychology, Behavior and Social Networking·Giuseppe RivaFabrizia Mantovani
Apr 16, 2019·Personality & Social Psychology Bulletin·Christopher A ThorstensonAndrew J Elliot
Jun 24, 2020·Cognitive Neuropsychology·Gabriella Bottini, Gerardo Salvato
Dec 29, 2020·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Damiano CrivelliGerardo Salvato
Aug 22, 2021·Experimental Brain Research·Assan Mary CedrasMaxime Maheu

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