One-year test-retest reliability of intrinsic connectivity network fMRI in older adults

► Assessed test-retest reliability of task-free fMRI in healthy older controls. ► ICN analytical methods proved reliable and were improved by wavelet analysis. ► Seed-based ROI correlation analysis showed high scan-wise reliability. ► Graph theoretical measures and TC-GICA showed high unit-wise reliability. ► Including global signal regression reduced reliability.