Differential experiences of embodiment between body-powered and myoelectric prosthesis users.

Abstract:

:Prosthesis embodiment, the perception of a prosthesis as part of one's body, may be an important component of functional recovery for individuals with upper limb absence. This work determined whether embodiment differs between body-powered and myoelectric prosthesis users. In a sample of nine individuals with transradial limb absence, embodiment was quantified using a survey regarding prosthesis ownership and agency. The extent to which the prosthesis affected the body schema, the representation of the body's dimensions, was assessed using limb length estimation. Because body-powered prostheses offer proprioceptive feedback that myoelectric prostheses do not, it was hypothesized that both measures would reveal stronger embodiment of body-powered prostheses. However, our results did not show differences across the two prosthesis designs. Instead, body schema was influenced by several patient-specific characteristics, including the cause of limb absence (acquired or congenital) and hours of daily prosthesis wear. These results indicate that regular prosthesis wear and embodiment are connected, regardless of the actual prosthesis design. Identifying whether embodiment is a direct consequence of regular prosthesis use would offer insight on how individuals with limb absence could modify their behavior to more fully embody their prosthesis.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Engdahl SM,Meehan SK,Gates DH

doi

10.1038/s41598-020-72470-0

subject

Has Abstract

pub_date

2020-09-22 00:00:00

pages

15471

issue

1

issn

2045-2322

pii

10.1038/s41598-020-72470-0

journal_volume

10

pub_type

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