The objective of this study was to identify fine-scale resting state functional networks within the spinal cord gray matter of squirrel monkeys, and measure the changes in functional connectivity within the cord after a targeted injury. Independent Component Analysis of resting state fMRI data detected robust BOLD signals localized at the bilateral intermediate and gray-commissure regions of the spinal cord as well at the ‘4 horns’. A unilateral section of dorsal column tract at C5 segment of spinal cord damaged the inter-segmental connectivity more than intra-segmental connectivity, as observed through individual connectivity measures and community structures generated by graph-theory principles.
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