Where is the 'subjective straight ahead' in Williams syndrome?
Background Individuals with Williams Syndrome (WS) are known to have particular difficulties when performing visuo-spatial tasks, which could be related to their difficulties in using a specific reference system to determine spatial relations. The aim of the present study was to assess the internal...
| Publicado en: | Journal of Intellectual Disability Research Vol. 61; no. 5; pp. 512 - 519 |
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| Autores principales: | , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Wiley-Blackwell
May2017
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=122576920&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 122576920 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09642633 EUL jtl: Journal of Intellectual Disability Research issn: 09642633 maglogo: Y pubinfo: dt: May2017 vid: 61 iid: 5 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 122576920 122576920 122576920 10.1111/jir.12358 122576920 ppf: 512 ppct: 7 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Where is the 'subjective straight ahead' in Williams syndrome? aug: au: Saj, A. Heiz, J. Barisnikov, K. affil: Department of Neurology, Neuropsychology Unit, University Hospital of Geneva, Switzerland sug: subj: Williams Syndrome Spatial Perception Evaluation Human Descriptive Statistics Adult Young Adult Adolescence Child Adult: 19-44 years Adolescent: 13-18 years Child: 6-12 years ab: Background Individuals with Williams Syndrome (WS) are known to have particular difficulties when performing visuo-spatial tasks, which could be related to their difficulties in using a specific reference system to determine spatial relations. The aim of the present study was to assess the internal representation of the body's sagittal plane, which is an important benchmark for an egocentric frame of reference. Method The results of 18 WS individuals (mean age = 20.5 ± 9.2 years) on the subjective straight ahead (SSA) task were compared with those of two healthy control groups composed of 36 participants matched on chronological age matched on chronological age (CA) and 30 young children matched on non-verbal intellectual ability (YC). Results Individuals with WS showed a significant left deviation on the SSA body's sagittal plane representation compared with the chronological age control group and a marginal left deviation compared with the young children control group. A comparison with the objective SA (0°) showed a significant leftward deviation in the WS group but not in the two control groups. Conclusions Individuals with WS showed a significant leftward deviation in the SSA task. This bias of the body's longitudinal axe representation could have a negative impact on the use of an egocentric reference system, which could be the cause for their difficulties in defining spatial relations (e.g. location and orientation) necessary for performing spatial tasks. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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