Periodic BOLD oscillations caused by vasomotion can superimpose temporal signal fluctuations in fMRI measurements and may affect brain network analysis. In order to establish a reliable detection of BOLD oscillations, we developed an automatic oscillation detection tool with an accuracy of 96 %. With this program, we examined high temporal resolution MR data consisting in total of 1.259.400 images. We found that BOLD oscillations occur brain wide starting between two and four hours after initiation of medetomidine sedation.
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