Reading on the right when there’s nothing left? Probabilistic tractography reveals hemispheric asymmetry in pure alexia

Abstract

We present a patient with reading inexpertise and right hemianopia following left posterior cerebral artery (PCA) stroke. We examine the extent of disruption to reading performance and the extent of white matter tract damage relative to a patient with more limited PCA infarction and isolated right hemianopia. We show white matter disconnection of the temporal occipital fusiform cortex in our pure alexia patient. Connectivity-based laterality indices revealed right hemisphere laterality in the alexia patient; this was not associated with improved reading function. We speculate that the degree of premorbid laterality may be a critical factor affecting the extent of reading dysfunction in alexia.

Publication DOI: https://doi.org/10.1080/13554794.2017.1364775
Divisions: College of Health & Life Sciences > School of Psychology
College of Health & Life Sciences > Aston Institute of Health & Neurodevelopment (AIHN)
College of Health & Life Sciences
Additional Information: This is an Accepted Manuscript of an article published by Taylor & Francis in Neurocase on 9/8/17, available online: http://www.tandfonline.com/10.1080/13554794.2017.1364775
Uncontrolled Keywords: alexia,diffusion tractography,reading,stroke,Arts and Humanities (miscellaneous),Clinical Neurology
Publication ISSN: 1465-3656
Last Modified: 13 May 2024 07:18
Date Deposited: 04 Sep 2017 14:00
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.tan ... rnalCode=nncs20 (Publisher URL)
PURE Output Type: Article
Published Date: 2017-08-09
Accepted Date: 2017-08-02
Authors: Veldsman, Michele
Loetscher, Tobias
Wood, Amanda (ORCID Profile 0000-0002-1537-6858)
Brodtmann, Amy

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