Spurious but systematic correlations in functional connectivity MRI networks arise from subject motion

@article{Power2012SpuriousBS,
  title={Spurious but systematic correlations in functional connectivity MRI networks arise from subject motion},
  author={Jonathan D. Power and Kelly Anne Barnes and Abraham Z. Snyder and Bradley L. Schlaggar and Steven E. Petersen},
  journal={NeuroImage},
  year={2012},
  volume={59},
  pages={2142-2154}
}
Here, we demonstrate that subject motion produces substantial changes in the timecourses of resting state functional connectivity MRI (rs-fcMRI) data despite compensatory spatial registration and regression of motion estimates from the data. These changes cause systematic but spurious correlation structures throughout the brain. Specifically, many long-distance correlations are decreased by subject motion, whereas many short-distance correlations are increased. These changes in rs-fcMRI… CONTINUE READING
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