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Prevalence, characteristics and a neurocognitive model of mirror-touch synaesthesia

Banissy, MJ; Kadosh, RC; Maus, GW; Walsh, V; Ward, J; (2009) Prevalence, characteristics and a neurocognitive model of mirror-touch synaesthesia. EXP BRAIN RES , 198 (2-3) 261 - 272. 10.1007/s00221-009-1810-9.

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Abstract

In so-called 'mirror-touch synaesthesia', observing touch to another person induces a subjective tactile sensation on the synaesthete's own body. It has been suggested that this type of synaesthesia depends on increased activity in neural systems activated when observing touch to others. Here we report the first study on the prevalence of this variant of synaesthesia. Our findings indicate that this type of synaesthesia is just as common, if not more common than some of the more frequently studied varieties of synaesthesia such as grapheme-colour synaesthesia. Additionally, we examine behavioural correlates associated with the condition. In a second experiment, we show that synaesthetic experiences are not related to somatotopic cueing-a flash of light on an observed body part does not elicit the behavioural or subjective characteristics of synaesthesia. Finally, we propose a neurocognitive model to account for these characteristics and discuss the implications of our findings for general theories of synaesthesia.

Type:Article
Title:Prevalence, characteristics and a neurocognitive model of mirror-touch synaesthesia
DOI:10.1007/s00221-009-1810-9
Keywords:Synaesthesia, Crossmodal processing, Somatosensory processing, Self, Body representation, OLD-WORLD MONKEY, BODY SCHEMA, COLOR SYNAESTHESIA, OWN FACE, SYNESTHESIA, MECHANISMS, CORTEX, REPRESENTATIONS, PERSPECTIVE, PERCEPTION
UCL classification:UCL > School of Life and Medical Sciences > Faculty of Brain Sciences > Psychology and Language Sciences (Division of) > Institute of Cognitive Neuroscience
UCL > School of Life and Medical Sciences > Faculty of Life Sciences

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