The physiological component of the BOLD signal: Impact of age and heart rate variability biofeedback training.

Imaging Neurosci (Camb) · 2025 · PMC12336062 · PMID 40800924

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did not reach statistical significanceno p-value reported

However, most of these voxel-level differences did not reach statistical significance after correcting for multiple comparisons using TFCE with 5000 permutations. 4 Discussion 4.1 General findings This study examined the impact of aging on how heart rate and respiration modulate the fMRI BOLD signal across two independent datasets.

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