Kimberg, Daniel Y.

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  • Publication
    Power in Voxel-based Lesion–Symptom Mapping
    (2007-07-01) Kimberg, Daniel Y.; Coslett, H. Branch; Schwartz, Myrna F.
    Lesion analysis in brain-injured populations complements what can be learned from functional neuroimaging. Voxelbased approaches to mapping lesion–behavior correlations in brain-injured populations are increasingly popular, and have the potential to leverage image analysis methods drawn from functional magnetic resonance imaging. However, power is a major concern for these studies, and is likely to vary regionally due to the distribution of lesion locations. Here, we outline general considerations for voxel-based methods, characterize the use of a nonparametric permutation test adapted from functional neuroimaging, and present methods for regional power analysis in lesion studies.