Reflecting upon line bisection: Mirror reversal increases the magnitude of pseudoneglect

In order to investigate the effect of congruent and non-congruent motor actions upon pseudoneglect, ‘real’ lines and mirror reversed ‘virtual’ lines were bisected in left and right hemispaces by 50 right handed subjects, 25 males, 25 females, with both left and right hands. Statistical analysis reve...

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Bibliographic Details
Published in:Neuropsychologia 2010-04, Vol.48 (5), p.1517-1520
Main Author: Brodie, Eric E.
Format: Article
Language:English
Subjects:
Adult
Adult and adolescent clinical studies
Biological and medical sciences
Female
Humans
Line bisection
Male
Medical sciences
Motor action
Neuropsychological Tests
Organic mental disorders. Neuropsychology
Perceptual Disorders - diagnosis
Pseudoneglect
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Severity of Illness Index
Visual Fields - physiology
Visual Perception
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Summary:In order to investigate the effect of congruent and non-congruent motor actions upon pseudoneglect, ‘real’ lines and mirror reversed ‘virtual’ lines were bisected in left and right hemispaces by 50 right handed subjects, 25 males, 25 females, with both left and right hands. Statistical analysis revealed significantly greater pseudoneglect for the non-congruent motor condition (virtual>real), hand (left>right), gender (male>female) and hemispace for virtual lines (left>right). These results are explained in terms of the interaction between three factors whose influence can jointly and severally result in pseudoneglect: right hemisphere specialization for spatial attention, right hemisphere activation resulting from hand use and sensorimotor discrepancies and the allocation of visual attention.
ISSN:0028-3932
1873-3514
DOI:10.1016/j.neuropsychologia.2010.01.002