Where is the ‘subjective straight ahead’ in Williams syndrome?

Saj̈, Arnaud; Heiz, Julie; Barisnikov, Koviljka

doi:10.1111/jir.12358

Cited by 2 publications

(3 citation statements)

References 43 publications

(62 reference statements)

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“…This bias is more pronounced in the right space as observed among neglect patients after a stroke in right hemisphere, independently of handedness. Results showed a left bias in the WS group, which is consistent with the deviation of the body representation found in the WS population (Saj & al., ). These authors reported that the WS population presents a leftward deviation on the SSA task.…”

Section: Discussionmentioning

confidence: 97%

“…Individuals with Williams syndrome (WS) have shown to present a deviation of body representation (Saj, Heiz & Barisnikov, ) as they exhibited a significant left deviation on the subjective straight‐ahead (SSA) compared with the chronological age (CA) control group and a marginal left deviation compared with the young children control group. The results for the latter group could be related to the progressive maturation of the neuronal network (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Visuospatial bias in line bisection in Williams syndrome

Saj̈

Heiz

Calster

et al. 2019

J intellect Disabil Res

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Background Recently, a study using the subjective straight-ahead task showed that individuals with Williams syndrome (WS) present a bias in the representation of body perception. The aim of the present study is to examine the horizontal midline body representation in WS participants using the bisection line task, which is an important benchmark for an egocentric frame of reference. Method Fifteen WS participants (mean age = 21.7 ± 9.5 years) were compared with two typical development control groups: one composed of 15 participants matched on chronological age and one composed of 15 children matched on mental age. The task consisted of dividing each line in a series of 18 lines into two equal halves by drawing a vertical mark with a pencil in the centre of the line. Results Individuals with WS presented a significant leftward bias in comparison to mental age and chronological age groups. Conclusions The leftward deviation in WS could be linked to the body representation bias and difficulties in the development of the egocentric reference system. An early detection of such deviation should help in the development of targeted interventions for WS individuals to improve visual-spatial skills and learning. A. Saj et al. • Line Bisection AND Williams syndrome

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Visuospatial bias in line bisection in Williams syndrome

Saj̈

Heiz

Calster

et al. 2019

J intellect Disabil Res

Self Cite

View full text Add to dashboard Cite

show abstract

“…A low recognition of and naming of body parts and difficulties in identifying the right and the left parts of own or other bodies has also been reported (Heiz, Cengic, Fernandes, & Barisnikov, 2015). According to a recent study (Saj, Heiz, & Barisnikov, 2017), these body representation difficulties in WS participants may be explained by a significant left deviation of their bodily sagittal plan, which allows an individual to determine a spatial location (e.g., on my left/right). The lack of a well-established representation of left and right directions might, according to Bernardino and colleagues (2013), introduce additional difficulties for WS participants.…”

Section: Discussionmentioning

confidence: 99%