The General Hospital Corporation

Hesheng Liu

Danhong Wang

Michael D Fox

Randy L Buckner

A system and method for measuring a functional lateralization of a subject brain is provided. The method includes providing a set of functional magnetic resonance imaging (fMRI) data acquired during a resting state of a subject, and selecting a plurality of seed voxels associated with locations in hemispheres of a brain of the subject. The method also includes determining a degree of within-hemisphere connectivity for each seed voxel using the fMRI data, determining a degree of cross-hemisphere connectivity for each seed voxel using the fMRI data, and computing an autonomy index for each seed voxel using the degree of within-hemisphere connectivity and the degree of cross-hemisphere connectivity, wherein the autonomy index is indicative of a connectivity asymmetry between the hemispheres. The method further includes generating a report indicative of a specialization profile determined for a region of interest in the brain of the subject.

System and method for measuring functional brain specialization

Systems and method for producing functional brain organization maps are provided. The method includes providing functional connectivity magnetic resonance image (fcMRI) data, a population atlas, a variation map indicative of inter-subject variability in the atlas. The method also includes initializing a subject map using the atlas, determining a reference signal for each functional connectivity network in the subject map using signals derived from the fcMRI data, computing correlations between the signals and reference signal of each functional connectivity network, and iteratively updating the subject map by reassigning locations in the subject brain when correlating with a functional connectivity network, updating at each iteration the reference signal using the subject map, the population atlas, the variation map, and the set of fcMRI data. The method further includes generating a report indicative of a functional brain organization for the brain of the subject using the subject map.

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Marblehead, MA, United States of America

Hesheng Liu