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I am working on a project in which we want to extract hippocampal surfaces using mri_tessellate and then overlay these surfaces with fmri activations from nifti files using mri_vol2surf. However, I am unclear whether mri_vol2surf can be used for surfaces derived from subcortical structures like the hippocampus. Crucially, these structures are unlike the cortex in that they have a closed shape and therefore the projection of activation to a surface may be more complex than in the case of cortex (which surface normal should one take?). So I guess my question is whether mri_vol2surf works for these kinds of surfaces or whether some other approach should be used. Thanks! Niels -- Niels Janssen Brain Imaging Laboratory Institute of Biomedical Technologies Institute of Neurosciences University of La Laguna Tenerife, Spain https://sites.google.com/view/nielsjanssen/
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