This dataset contains segmentations of 72 white matter tracts obtained from 105 subjects included in the Human Connectome Project (HCP) Young Adult dataset (https://www.humanconnectome.org/study/hcp-young-adult). The folder names in the source archive correspond to the HCP subject IDs. This dataset contains only tracts; the original DWI data must be downloaded separately from the HCP website (free registration required).
Arguments
- subjects
Controls which subjects are loaded for multi-subject datasets (ignored for
"HCP1065"). Four forms are accepted:NULL(default)All available subjects are loaded and returned as a fiber::bundle_set.
- An integer scalar
n nsubjects are drawn at random (without replacement) and returned as a fiber::bundle_set.- A character vector of length > 1
The bundles for those subject IDs are returned as a fiber::bundle_set.
- A character scalar
The bundle for that single subject ID is returned directly as a fiber::bundle object.
Details
The included bundles are stored as objects of class fiber::bundle.
A fiber::bundle object is an S7 class which has two slots: @streamlines
and @bundle_data, where:
@streamlinesis a list of fiber::streamline objects, which, in turn, are S7 classes with slots@points,@point_dataand@streamline_data.@bundle_datais a list of metadata about the bundle, such as its name, where it was extracted from, etc.
More details about the format of the data can be found in the documentation of the fiber package.
References
Wasserthal, J., Neher, P., & Maier-Hein, K. H. (2018). TractSeg – Fast and accurate white matter tract segmentation. NeuroImage, 183, 239–253. doi:10.1016/j.neuroimage.2018.07.070