Neural activity associated with semantic versus phonological anomia treatments in aphasia

van Hees, Sophia, McMahon, Katie, Angwin, Anthony, de Zubicaray, Greig and Copland, David A. (2014) Neural activity associated with semantic versus phonological anomia treatments in aphasia. Brain and Language, 129 1: 47-57. doi:10.1016/j.bandl.2013.12.004


Author van Hees, Sophia
McMahon, Katie
Angwin, Anthony
de Zubicaray, Greig
Copland, David A.
Title Neural activity associated with semantic versus phonological anomia treatments in aphasia
Journal name Brain and Language   Check publisher's open access policy
ISSN 0093-934X
1090-2155
Publication date 2014-02-01
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.bandl.2013.12.004
Open Access Status Not yet assessed
Volume 129
Issue 1
Start page 47
End page 57
Total pages 11
Place of publication Maryland Heights, MO, United States
Publisher Academic Press
Language eng
Abstract Naming impairments in aphasia are typically targeted using semantic and/or phonologically based tasks. However, it is not known whether these treatments have different neural mechanisms. Eight participants with aphasia received twelve treatment sessions using an alternating treatment design, with fMRI scans pre- and post-treatment. Half the sessions employed Phonological Components Analysis (PCA), and half the sessions employed Semantic Feature Analysis (SFA). Pre-treatment activity in the left caudate correlated with greater immediate treatment success for items treated with SFA, whereas recruitment of the left supramarginal gyrus and right precuneus post-treatment correlated with greater immediate treatment success for items treated with PCA. The results support previous studies that have found greater treatment outcome to be associated with activity in predominantly left hemisphere regions, and suggest that different mechanisms may be engaged dependent on the type of treatment employed.
Keyword Stroke
Rehabilitation
Neuroimaging
fMRI
Naming
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Wed, 19 Feb 2014, 23:32:16 EST by Sandrine Ducrot on behalf of Centre for Advanced Imaging