Methods to detect, characterize, and remove motion artifact in resting state fMRI

  title={Methods to detect, characterize, and remove motion artifact in resting state fMRI},
  author={Jonathan D. Power and Anish Mitra and Timothy O. Laumann and Abraham Z. Snyder and Bradley L. Schlaggar and Steven E. Petersen},
Head motion systematically alters correlations in resting state functional connectivity fMRI (RSFC). In this report we examine impact of motion on signal intensity and RSFC correlations. We find that motion-induced signal changes (1) are often complex and variable waveforms, (2) are often shared across nearly all brain voxels, and (3) often persist more than 10s after motion ceases. These signal changes, both during and after motion, increase observed RSFC correlations in a distance-dependent… CONTINUE READING
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The in fl uence of head motion on intrinsic functional connectivity MRI

  • K. R. A. Van Dijk, M. R. Sabuncu, R. L. Buckner
  • NeuroImage
  • 2012
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