In this issue of Scandinavian Journal of Pain, a study by Johnson and colleagues investigated the roles of arousal and threatening in the peripersonal space during a rubber hand illusion . The study is designed to evaluate whether or not arousal is selectively associated with threatening stimuli entering into the peripersonal space. The study uses the paradigm of the rubber hand illusion, where participants are induced to behave as if a rubber hand is part of their own body. The illusion is usually induced by brushing a person’s hand, hidden from view, while synchronously brushing a visible rubber hand. In this study, the authors used brushing to simulate a non-threatening condition and a needle to modulate a threatening condition.This paper outlines one of the most intriguing aspects: how self-body representation influences perception and cognition. Recent theories are suggesting that perception and cognition are influenced by internal representations of the body. This hypothesis is corroborated by research evidence showing for example that vision of the body increases spatial acuity of touch.Both experimental and clinical studies also highlight the importance of body representation in the modulation of pain experience using cross-modal illusions. These studies show that body self-representation and pain perception
Scandinavian Journal of Pain – de Gruyter
Published: Dec 29, 2017
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