Antithetical asymmetry in schizophrenia and bipolar affective disorder: a line bisection study

Rao, Naren P.; Arasappa, Rashmi; Reddy, N Krishna; Venkatasubramanian, Ganesan; Gangadhar, Bangalore N.

doi:10.1111/j.1399-5618.2010.00811.x

Cited by 22 publications

(24 citation statements)

References 61 publications

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“…Barta et al [47] observed that PS deviated further to the right with respect to the control group when they (1) bisected lines placed on the right side of the page and (2) when they used the right hand and the direction of scanning was from right to left. The presence of a rightward bias was subsequently confirmed by Rao et al [48] and Benson and Park [49]. Also in the study by Rao et al [48] participants used the left or right hand.…”

Section: Rightward Bisection Bias Left Hemineglectsupporting

confidence: 51%

“…The presence of a rightward bias was subsequently confirmed by Rao et al [48] and Benson and Park [49]. Also in the study by Rao et al [48] participants used the left or right hand. Authors [48] found that when PS used the right (dominant) hand, they consistently deviated to right.…”

Section: Rightward Bisection Bias Left Hemineglectsupporting

confidence: 51%

“…Also in the study by Rao et al [48] participants used the left or right hand. Authors [48] found that when PS used the right (dominant) hand, they consistently deviated to right. Ribolsi et al (experiment 1) [50] included in their study also the firstdegree relatives of PS.…”

Section: Rightward Bisection Bias Left Hemineglectmentioning

confidence: 99%

“…Rao et al [48] suggested that the rightward bisection bias (left hemispatial inattention) in schizophrenia would depend on a lesser lateralization of brain functions. This hypothesis was supported by anatomical and functional data.…”

Section: Rightward Bisection Bias Left Hemineglectmentioning

confidence: 99%

See 3 more Smart Citations

Asymmetries of Visuospatial Attention in Schizophrenia

Chieffi¹,

Villano²,

Iavarone³

et al. 2016

J Psychiatry

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Journal of Psychiatry AbstractAsymmetries of visuospatial attention has long been described in hemispatial neglect, a neurological syndrome in which brain damaged patients fail to acknowledge or explore stimuli presented to the contralesional side of space. Asymmetries for spatial attention were also investigated in schizophrenia. In this review, we report the researches that, using tasks selectively employed to study visuospatial processing in neglect patients, demonstrated hemineglect-like behaviour in schizophrenia. Intriguingly, these studies produced mixed evidence. Some researches found biases towards the left hemispace suggesting a right hemineglect, others towards the right hemispace suggesting a left hemineglect. We examine the possible factors that may have contributed in producing these conflicting findings.

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Section: Rightward Bisection Bias Left Hemineglectsupporting

confidence: 51%

Section: Rightward Bisection Bias Left Hemineglectsupporting

confidence: 51%

Section: Rightward Bisection Bias Left Hemineglectmentioning

confidence: 99%

Section: Rightward Bisection Bias Left Hemineglectmentioning

confidence: 99%

See 2 more Smart Citations

Asymmetries of Visuospatial Attention in Schizophrenia

Chieffi¹,

Villano²,

Iavarone³

et al. 2016

J Psychiatry

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show abstract

“…Up to now, only one recent study has investigated visuospatial attention in BD (psychotic and non-psychotic) and healthy controls by applying a visual line-bisection task (Rao et al, 2010). This study revealed a leftward bias in both psychotic and non-psychotic BD patients compared to healthy controls when using the right hand.…”

Section: Introductionmentioning

confidence: 90%

Right fronto-parietal dysfunction underlying spatial attention in bipolar disorder

Najt

Bayer

Hausmann

2013

Psychiatry Research

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Publisher's copyright statement: NOTICE: this is the author's version of a work that was accepted for publication in Psychiatry Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reected in this document. Changes may have been made to this work since it was submitted for publication. A denitive version was subsequently published in Psychiatry Research, 210, 2, 15 December 2013, 10.1016/j.psychres.2013.07.021. Additional information:Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. In contrast to healthy controls, BD patients did not significantly deviate from the veridical center, regardless which hand was used to bisect horizontal lines. This finding indicates an atypical functional cerebral asymmetry in visuospatial attention in BD euthymia, supporting the idea of a dysfunction especially in the right fronto-parietal cortex.

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A critical review and meta-analysis of the perceptual pseudoneglect across psychiatric disorders: Is there a continuum?

et al. 2014

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The phenomenon known as "perceptual pseudoneglect" refers to the leftward bias in visuospatial attention in non-clinical samples, possibly as a consequence of right hemisphere dominance for visuospatial attention. The degree of such a lateralized visuospatial attention bias is often assessed using the line bisection task. Interestingly, various psychiatric disorders may influence the expression of this phenomenon. The aim of this paper was to perform a critical appraisal of the literature on the expression of the perceptual pseudoneglect across all psychiatric disorders accompanied by meta-analytical evaluation of the data. Moreover, we will discuss whether this phenomenon may be considered as a trait marker across different psychiatric disorders.

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Antithetical asymmetry in schizophrenia and bipolar affective disorder: a line bisection study

Cited by 22 publications

References 61 publications

Asymmetries of Visuospatial Attention in Schizophrenia

Asymmetries of Visuospatial Attention in Schizophrenia

Right fronto-parietal dysfunction underlying spatial attention in bipolar disorder

A critical review and meta-analysis of the perceptual pseudoneglect across psychiatric disorders: Is there a continuum?

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