TY - JOUR
T1 - The impact of using an upper-limb prosthesis on the perception of real and illusory weight differences
AU - Buckingham, Gavin
AU - Parr, Johnny
AU - Wood, Greg
AU - Vine, Samuel
AU - Dimitriou, Pat
AU - Day, Sarah
PY - 2018/8/1
Y1 - 2018/8/1
N2 - Little is known about how human perception is affected using an upper-limb prosthesis. To shed light on this topic, we investigated how using an upper-limb prosthesis affects individuals' experience of object weight. First, we examined how a group of upper-limb amputee prosthetic users experienced real mass differences and illusory weight differences in the context of the ‘size–weight’ illusion. Surprisingly, the upper-limb prosthetic users reported a markedly smaller illusion than controls, despite equivalent perceptions of a real mass difference. Next, we replicated this dissociation between real and illusory weight perception in a group of nonamputees who lifted the stimuli with an upper-limb myoelectric prosthetic simulator, again noting that the prosthetic users experienced illusory, but not real, weight differences as being weaker than controls. These findings not only validate the use of a prosthetic simulator as an effective tool for investigating perception and action but also highlight a surprising dissociation between the perception of real and illusory weight differences
AB - Little is known about how human perception is affected using an upper-limb prosthesis. To shed light on this topic, we investigated how using an upper-limb prosthesis affects individuals' experience of object weight. First, we examined how a group of upper-limb amputee prosthetic users experienced real mass differences and illusory weight differences in the context of the ‘size–weight’ illusion. Surprisingly, the upper-limb prosthetic users reported a markedly smaller illusion than controls, despite equivalent perceptions of a real mass difference. Next, we replicated this dissociation between real and illusory weight perception in a group of nonamputees who lifted the stimuli with an upper-limb myoelectric prosthetic simulator, again noting that the prosthetic users experienced illusory, but not real, weight differences as being weaker than controls. These findings not only validate the use of a prosthetic simulator as an effective tool for investigating perception and action but also highlight a surprising dissociation between the perception of real and illusory weight differences
KW - size-weight illusion
KW - object lifting
KW - amputees
KW - body representation
UR - https://osf.io/yzv5a/
UR - https://link.springer.com/journal/13423
U2 - 10.3758/s13423-017-1425-2
DO - 10.3758/s13423-017-1425-2
M3 - Article
VL - 25
SP - 1507
EP - 1516
JO - Psychonomic Bulletin & Review
JF - Psychonomic Bulletin & Review
SN - 1069-9384
IS - 4
ER -