Neglect patients exhibit egocentric or allocentric neglect for the same stimulus contingent upon task demands
Neglect patients exhibit egocentric or allocentric neglect for the same stimulus contingent upon task demands
Hemispatial Neglect (HN) is a failure to allocate attention to a region of space opposite to where damage has occurred in the brain, usually the left side of space. It is widely documented that there are two types of neglect: egocentric neglect (neglect of information falling on the individual’s left side) and allocentric neglect (neglect of the left side of each object, regardless of the position of that object in relation to the individual). We set out to address whether neglect presentation could be modified from egocentric to allocentric through manipulating the task demands whilst keeping the physical stimulus constant by measuring the eye movement behaviour of a single group of neglect patients engaged in two different tasks (copying and tracing). Eye movements and behavioural data demonstrated that patients exhibited symptoms consistent with egocentric neglect in one task (tracing), and allocentric neglect in another task (copying), suggesting that task requirements may influence the nature of the neglect symptoms produced by the same individual. Different task demands may be able to explain differential neglect symptoms in some individuals.
Leyland, Louise-Ann Leyland
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Godwin, Hayward J.
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Benson, Valerie
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Liversedge, Simon P.
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16 May 2017
Leyland, Louise-Ann Leyland
9dfb7b2b-0f2f-4181-9ff6-d5d1cd7f02e1
Godwin, Hayward J.
df22dc0c-01d1-440a-a369-a763801851e5
Benson, Valerie
4827cede-6668-4e3d-bded-ade4cd5e5db5
Liversedge, Simon P.
3ebda3f3-d930-4f89-85d5-5654d8fe7dee
Leyland, Louise-Ann Leyland, Godwin, Hayward J., Benson, Valerie and Liversedge, Simon P.
(2017)
Neglect patients exhibit egocentric or allocentric neglect for the same stimulus contingent upon task demands.
Scientific Reports, 7, [1941].
(doi:10.1038/s41598-017-02047-x).
Abstract
Hemispatial Neglect (HN) is a failure to allocate attention to a region of space opposite to where damage has occurred in the brain, usually the left side of space. It is widely documented that there are two types of neglect: egocentric neglect (neglect of information falling on the individual’s left side) and allocentric neglect (neglect of the left side of each object, regardless of the position of that object in relation to the individual). We set out to address whether neglect presentation could be modified from egocentric to allocentric through manipulating the task demands whilst keeping the physical stimulus constant by measuring the eye movement behaviour of a single group of neglect patients engaged in two different tasks (copying and tracing). Eye movements and behavioural data demonstrated that patients exhibited symptoms consistent with egocentric neglect in one task (tracing), and allocentric neglect in another task (copying), suggesting that task requirements may influence the nature of the neglect symptoms produced by the same individual. Different task demands may be able to explain differential neglect symptoms in some individuals.
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Leyland_et_al_SPL
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Accepted/In Press date: 10 April 2017
e-pub ahead of print date: 16 May 2017
Published date: 16 May 2017
Organisations:
Cognition, Psychology
Identifiers
Local EPrints ID: 410608
URI: http://eprints.soton.ac.uk/id/eprint/410608
ISSN: 2045-2322
PURE UUID: 2ae0a915-f5fd-4a2f-bdd2-5a4b75cd772a
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Date deposited: 09 Jun 2017 09:13
Last modified: 16 Mar 2024 04:01
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Contributors
Author:
Louise-Ann Leyland Leyland
Author:
Valerie Benson
Author:
Simon P. Liversedge
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