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- W4293417750 abstract "Several mechanisms have been attributed to post-stroke loss and recovery of language functions. However, the significance and timing of domain-general and homotopic right-hemispheric activation is controversial. We aimed to examine the effect of left-hemispheric lesion location and time post-stroke on right-hemispheric activation. Voxel-based lesion analyses were informed by auditory language-related fMRI activation of 71 patients with left middle cerebral artery stroke examined longitudinally in the acute, subacute and early chronic phase. Language activation was determined in several right-hemispheric regions of interest and served as regressor of interest for voxel-based lesion analyses. We found that an acute to chronic increase of language activation in the right supplementary motor area was associated with lesions to the left extreme capsule as part of the ventral language pathway. Importantly, this activation increase correlated significantly with improvement of out-of-scanner comprehension abilities. We interpret our findings in terms of successful domain-general compensation in patients with critical left frontotemporal disconnection due to damage to the ventral language pathway but relatively spared cortical language areas." @default.
- W4293417750 created "2022-08-29" @default.
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- W4293417750 date "2022-01-01" @default.
- W4293417750 modified "2023-09-30" @default.
- W4293417750 title "fMRI informed voxel-based lesion analysis to identify lesions associated with right-hemispheric activation in aphasia recovery" @default.
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- W4293417750 doi "https://doi.org/10.1016/j.nicl.2022.103169" @default.
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