期刊
CEREBRAL CORTEX
卷 20, 期 5, 页码 1187-1194出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/cercor/bhp182
关键词
DTI; fcMRI; functional connectivity; resting state; thalamus
资金
- National Institutes of Health (NIH) [NS06833, K23 HD053212]
- National Institutes of Mental Health (NIMH) [F30MH083483]
Relating structural connectivity with functional activity is fundamentally important to understanding the brain's physiology. The thalamocortical system serves as a good model system for exploring structure/function relationships because of its well-documented anatomical connectivity. Here we performed functional and structural magnetic resonance mapping of the human thalamocortical system using intrinsic brain activity and diffusion-weighted imaging. The accuracy of these imaging techniques is tested by comparison with human histology registered to common anatomical space and connectional anatomy derived from nonhuman primates. In general, there is good overall concordance among structural, functional, and histological results which suggests that a simple model of direct anatomical connectivity between the cerebral cortex and the thalamus is capable of explaining much of the observed correlations in neuronal activity. However, important differences between structural and functional mapping results are also manifest which suggests a more complex interpretation and emphasizes the unique contributions from structural and functional mapping.
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