NDLI: Investigating the contribution of ventral-lexical and dorsal-sublexical pathways during reading in bilinguals

Content Provider	PubMed Central
Author	Bakhtiari, Reyhaneh Boliek, Carol Jacqueline, Cummine
Copyright Year	2014
Abstract	Several studies suggest the existence of ventral-lexical and dorsal-sublexical systems for reading. The relative contribution of these pathways can be manipulated by stimulus type and task demands. However, little is known about how bilinguals use these systems to read in their second language. In this study diffusion tensor imaging (DTI) was used to investigate the relationship between white matter (WM) integrity and reaction time in a group of 12 Chinese–English bilingual and 11 age-matched English monolingual adults. Considering a dual-route model of reading, the following four tracts were isolated in both the left and right hemispheres using a tractography measurement approach. Ventral tracts included the uncinate fasciculus (UF) and the inferior longitudinal fasciculus (ILF). The dorsal tracts of interest were the arcuate fasciculus (AF) and the superior longitudinal fasciculus (SLF). A significant correlation between the reaction time in a reading task and the mean diffusivity (MD) value was observed in the right UF in both bilingual and monolingual groups. Moreover, in the bilingual group we observed significantly more positive relationships between reaction time and MD in the right AF, and bilaterally in the SLF. We concluded that the relative contribution of the dorsal system for reading is greater in bilinguals than monolinguals. Further, these findings implicate a role of the right hemisphere in reading.
Related Links	http://dx.doi.org/10.3389/fnhum.2014.00507
Starting Page	507
File Format	PDF
ISSN	16625161
e-ISSN	16625161
Journal	Frontiers in Human Neuroscience
Volume Number	8
Language	English
Publisher	Frontiers Media S.A.
Publisher Date	2014-07-01
Access Restriction	Open
Rights Holder	Frontiers Media S.A.
Subject Keyword	Biological Psychiatry Behavioral Neuroscience Neuropsychology and Physiological Psychology Neurology Psychiatry and Mental health Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Neurology Biological Psychiatry Behavioral Neuroscience Neuropsychology and Physiological Psychology Psychiatry and Mental Health

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