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April 21, 2022 03:17AM
Dear all,

I am interested in head motion under anesthesia. As we all know, subjects exhibit variability in head motion when lying awake in the scanner.
Under anesthesia, all subjects of a dataset that I am working on show the same kind of small but ongoing, rapid, and "spike-like" head motion.

Since we can only estimate head motion in fMRI, my question is if the time-series of the motion parameters approximately reflect real head motion, or if this "white noise like head motion" is rather an artifact by AFNI’s head motion estimation (when there is probably little or almost no head motion in anesthesia)?

I attach an paradigmatic image of AFNIs QC for one subject below.

Thanks,
Philipp


Subject Author Posted

Estimation of head motion in anesthesia – artifact or real data? Attachments

Philipp April 21, 2022 03:17AM

Re: Estimation of head motion in anesthesia – artifact or real data?

ptaylor April 21, 2022 10:02AM

Re: Estimation of head motion in anesthesia – artifact or real data?

Philipp April 22, 2022 01:35PM

Re: Estimation of head motion in anesthesia – artifact or real data?

Daniel Glen April 25, 2022 05:01PM

Re: Estimation of head motion in anesthesia – artifact or real data?

wanyongshin May 12, 2022 10:59AM



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