The impact of using an upper-limb prosthesis on the perception of real and illusory weight differences

Gavin Buckingham, Johnny Parr, Greg Wood, Samuel Vine, Pat Dimitriou, Sarah Day

Research output: Contribution to journalArticle

4 Citations (Scopus)
10 Downloads (Pure)

Abstract

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
Original languageEnglish
Pages (from-to)1507–1516
Number of pages10
JournalPsychonomic Bulletin & Review
Volume25
Issue number4
Early online date19 Jan 2018
DOIs
Publication statusPublished - 1 Aug 2018

Fingerprint

Artificial Limbs
Upper Extremity
Weights and Measures
Weight Perception
Amputees
Prosthetics

Keywords

  • size-weight illusion
  • object lifting
  • amputees
  • body representation

Cite this

Buckingham, Gavin ; Parr, Johnny ; Wood, Greg ; Vine, Samuel ; Dimitriou, Pat ; Day, Sarah. / The impact of using an upper-limb prosthesis on the perception of real and illusory weight differences. In: Psychonomic Bulletin & Review. 2018 ; Vol. 25, No. 4. pp. 1507–1516.
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The impact of using an upper-limb prosthesis on the perception of real and illusory weight differences. / Buckingham, Gavin; Parr, Johnny; Wood, Greg; Vine, Samuel; Dimitriou, Pat; Day, Sarah.

In: Psychonomic Bulletin & Review, Vol. 25, No. 4, 01.08.2018, p. 1507–1516.

Research output: Contribution to journalArticle

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