Abstract
AbstractIn this work, we identify a problem with the process of volume-to-surface mapping of functional Magnetic Resonance Imaging (fMRI) data that emerges in local connectivity analysis. We show that neighborhood correlations on the surface of the brain vary spatially with the gyral structure, even when the underlying volumetric data are uncorrelated noise. This could potentially have impacted studies focusing upon local neighborhood connectivity. We explore the effects of this anomaly across varying data resolutions and surface mesh densities, and propose several measures to mitigate these unwanted effects.
Funder
Malta Council for Science and Technology
National Institute of Mental Health
Publisher
Springer Science and Business Media LLC
Subject
Histology,General Neuroscience,Anatomy
Cited by
5 articles.
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