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Optokinetic stimulation affects word omissions but not stimulus-centered reading errors in paragraph reading in neglect dyslexia

Reinhart, Stefan; Schindler, Igor; Kerkhoff, Georg

Authors

Stefan Reinhart

Georg Kerkhoff



Abstract

Patients with right hemisphere lesions often omit or misread words on the left side of a text or the initial letters of single words, a phenomenon termed neglect dyslexia (ND). Omissions of words on the contralesional side of the page are considered as egocentric or space-based errors, whereas misread words can be viewed as a type of stimulus-centered error where the left part of a single perceptual entity (the word) is neglected. Previous patient studies have shown that optokinetic stimulation (OKS) significantly modulates many facets of the neglect syndrome, including the subjective body midline, line bisection and size distortions. An open question is whether OKS can also influence omissions and stimulus-centered errors in paragraph reading in ND. The current study compared the influence of OKS on both types of reading errors using controlled indented paragraph reading tests in a group of 9 right-hemisphere lesioned patients with ND, 7 patients without ND and 9 matched healthy controls. Leftward OKS significantly reduced omissions on the left side of the text in ND. In contrast, the pattern of stimulus-centered reading errors remained unchanged. In conclusion egocentric manipulations like OKS only appear to influence space-based attentional processes evident as omissions in paragraph reading but have no impact on stimulus-centered attentional processes evident as word-based errors during paragraph reading in ND. © 2011 Elsevier Ltd.

Citation

Reinhart, S., Schindler, I., & Kerkhoff, G. (2011). Optokinetic stimulation affects word omissions but not stimulus-centered reading errors in paragraph reading in neglect dyslexia. Neuropsychologia, 49(9), (2728-2735). doi:10.1016/j.neuropsychologia.2011.05.022. ISSN 0028-3932

Journal Article Type Article
Acceptance Date May 26, 2011
Online Publication Date Jun 6, 2011
Publication Date 2011-07
Deposit Date Nov 13, 2014
Journal Neuropsychologia
Print ISSN 0028-3932
Electronic ISSN 1873-3514
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 49
Issue 9
Pages 2728-2735
DOI https://doi.org/10.1016/j.neuropsychologia.2011.05.022
Keywords Experimental and Cognitive Psychology; Cognitive Neuroscience; Behavioral Neuroscience
Public URL https://hull-repository.worktribe.com/output/463216