First published on ScienceDaily.com
A team of New Jersey stroke researchers has linked recovery of reading and language competence with cerebral blood flow in the left reading network. Their findings may contribute to new approaches to identifying and treating reading deficits after stroke. The open access article, “Cerebral perfusion of the left reading network predicts recovery of reading in subacute to chronic stroke” was epublished on August 26, 2019 in Human Brain Mapping. The authors are Olga Boukrina, PhD, and A.M. Barrett, MD, of Kessler Foundation, and William Graves, PhD, of Rutgers, the State University of New Jersey.
Despite the fundamental role of reading ability in everyday living, little research has been conducted on patterns of reading recovery after stroke, or the development of interventions to improve reading outcomes. In this study of left-brain stroke, a team of New Jersey scientists examined patterns of cerebral perfusion bilaterally, including left and right networks of brain areas important for healthy reading, the area surrounding the stroke lesion, and the corresponding contralateral area.
They enrolled 31 participants during inpatient rehabilitation, within 5 weeks of left-sided stroke. All underwent functional magnetic resonance imaging, psychometric testing, neurological examination and tests for phonological, orthographic and semantic impairments. Fifteen participants had follow-up studies at 3 months post stroke. Analysis of data from the subacute and chronic phases showed that recovery of reading and language competence correlated with increases in cerebral blood flow in the left reading network.
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