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Abstract #2917

Automatic detection of BOLD oscillations in the anesthetized brain

Henriette Lambers1, Lydia Wachsmuth1, Ping Zheng1, and Cornelius Faber1
1Translational Research Imaging Center, Clinic for Radiology, University Hospital Muenster, Muenster, Germany

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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