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The distorted body: The perception of the relative proportions of the body is preserved in Parkinson’s disease

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The distorted body : The perception of the relative proportions of the body is preserved in Parkinson’s disease. / Readman, Megan; McLatchie, Neil; Crawford, Trevor; Longo, Matthew; Linkenauger, Sally.

In: Psychonomic Bulletin and Review, 20.04.2022.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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@article{2596c84aae804a049892bcd7a0f21a71,
title = "The distorted body: The perception of the relative proportions of the body is preserved in Parkinson{\textquoteright}s disease",
abstract = "Given humans{\textquoteright} ubiquitous visual experience of their own body, one reasonable assumption is that one{\textquoteright}s perceptions of the lengths of their body parts should be accurate. However, recent research has shown that large systematic distortions of the length of body parts are present in healthy younger adults. These distortions appear to be linked to tactile sensitivity such that individuals overestimate the length of body parts of low tactile sensitivity to a greater extent than body parts of high tactile sensitivity. There are certain conditions featuring reduced tactile sensitivity, such as Parkinson{\textquoteright}s disease (PD) and healthy older ageing. However, the effect of these circumstances on individuals{\textquoteright} perceptions of the lengths of their body parts remains unknown. In this study, participants visually estimated the length of their body parts using their hand as a metric. We show that despite the reductions in tactile sensitivity, and potential alterations in the cortical presentation of body parts that may occur in PD and healthy older ageing, individuals with mild-moderate PD and older adults of comparable age experience body size distortions comparable to healthy younger controls. These findings demonstrate that the ability to perceive the length of one{\textquoteright}s body parts is well preserved in mild-moderate PD.",
author = "Megan Readman and Neil McLatchie and Trevor Crawford and Matthew Longo and Sally Linkenauger",
year = "2022",
month = apr,
day = "20",
doi = "10.3758/s13423-022-02099-9",
language = "English",
journal = "Psychonomic Bulletin and Review",
issn = "1069-9384",
publisher = "Springer",

}

RIS

TY - JOUR

T1 - The distorted body

T2 - The perception of the relative proportions of the body is preserved in Parkinson’s disease

AU - Readman, Megan

AU - McLatchie, Neil

AU - Crawford, Trevor

AU - Longo, Matthew

AU - Linkenauger, Sally

PY - 2022/4/20

Y1 - 2022/4/20

N2 - Given humans’ ubiquitous visual experience of their own body, one reasonable assumption is that one’s perceptions of the lengths of their body parts should be accurate. However, recent research has shown that large systematic distortions of the length of body parts are present in healthy younger adults. These distortions appear to be linked to tactile sensitivity such that individuals overestimate the length of body parts of low tactile sensitivity to a greater extent than body parts of high tactile sensitivity. There are certain conditions featuring reduced tactile sensitivity, such as Parkinson’s disease (PD) and healthy older ageing. However, the effect of these circumstances on individuals’ perceptions of the lengths of their body parts remains unknown. In this study, participants visually estimated the length of their body parts using their hand as a metric. We show that despite the reductions in tactile sensitivity, and potential alterations in the cortical presentation of body parts that may occur in PD and healthy older ageing, individuals with mild-moderate PD and older adults of comparable age experience body size distortions comparable to healthy younger controls. These findings demonstrate that the ability to perceive the length of one’s body parts is well preserved in mild-moderate PD.

AB - Given humans’ ubiquitous visual experience of their own body, one reasonable assumption is that one’s perceptions of the lengths of their body parts should be accurate. However, recent research has shown that large systematic distortions of the length of body parts are present in healthy younger adults. These distortions appear to be linked to tactile sensitivity such that individuals overestimate the length of body parts of low tactile sensitivity to a greater extent than body parts of high tactile sensitivity. There are certain conditions featuring reduced tactile sensitivity, such as Parkinson’s disease (PD) and healthy older ageing. However, the effect of these circumstances on individuals’ perceptions of the lengths of their body parts remains unknown. In this study, participants visually estimated the length of their body parts using their hand as a metric. We show that despite the reductions in tactile sensitivity, and potential alterations in the cortical presentation of body parts that may occur in PD and healthy older ageing, individuals with mild-moderate PD and older adults of comparable age experience body size distortions comparable to healthy younger controls. These findings demonstrate that the ability to perceive the length of one’s body parts is well preserved in mild-moderate PD.

U2 - 10.3758/s13423-022-02099-9

DO - 10.3758/s13423-022-02099-9

M3 - Journal article

JO - Psychonomic Bulletin and Review

JF - Psychonomic Bulletin and Review

SN - 1069-9384

M1 - 3

ER -