TY - JOUR
T1 - Specular vision-touch synaesthesia
T2 - Two reference frames
AU - White, Rebekah C.
AU - Aimola Davies, Anne M.
PY - 2012
Y1 - 2012
N2 - Two subtypes of vision-touch synaesthesia (VTS) have been identified. For anatomical VTS, sight of touch on another person elicits synaesthetic tactile sensation at the same location on the observer's own body (eg viewed touch on the left cheek elicits sensation on the observer's left cheek). For specular VTS, sight of touch on another person elicits synaesthetic tactile sensation at the mirror-reflected location (eg viewed touch on the left cheek elicits sensation on the observer's right cheek). Here we report two distinctly different patterns of sensation within the specular subtype. Both participants experienced synaesthetic tactile sensation on their right hand when they viewed unidirectional brushstrokes administered to a prosthetic left hand (positioned with fingers pointing toward the participant), but the direction of sensation matched the viewed touch in a hand-centred (spatial) reference frame for RS and in an external (viewer-centred) reference frame for NC. Competing reference frames affect how individuals with specular VTS experience synaesthetic tactile sensation.
AB - Two subtypes of vision-touch synaesthesia (VTS) have been identified. For anatomical VTS, sight of touch on another person elicits synaesthetic tactile sensation at the same location on the observer's own body (eg viewed touch on the left cheek elicits sensation on the observer's left cheek). For specular VTS, sight of touch on another person elicits synaesthetic tactile sensation at the mirror-reflected location (eg viewed touch on the left cheek elicits sensation on the observer's right cheek). Here we report two distinctly different patterns of sensation within the specular subtype. Both participants experienced synaesthetic tactile sensation on their right hand when they viewed unidirectional brushstrokes administered to a prosthetic left hand (positioned with fingers pointing toward the participant), but the direction of sensation matched the viewed touch in a hand-centred (spatial) reference frame for RS and in an external (viewer-centred) reference frame for NC. Competing reference frames affect how individuals with specular VTS experience synaesthetic tactile sensation.
KW - Crossed hands
KW - Hand-centred reference frame
KW - Mirror-touch synaesthesia
KW - Rubber hands
KW - Synaesthetic tactile sensation
KW - Viewer-centred reference frame
UR - http://www.scopus.com/inward/record.url?scp=84867091734&partnerID=8YFLogxK
U2 - 10.1068/p7182
DO - 10.1068/p7182
M3 - Article
SN - 0301-0066
VL - 41
SP - 871
EP - 874
JO - Perception
JF - Perception
IS - 7
ER -