Preprocessing
fMRI
Topics
SPM
T1B — registration and parcellation
fMRIa Preprocessing
Skullstripping
Reference
Things to watch for
- gibbs ringing artifacts
- abnormal intensity differences in GM/WM indicative of pathology (here)
Notes
Correction of noise sources and signal confounds has a considerable impact on neuroimaging results Khalili-Mahani2013
Noise sources are exacerbated under Psychedelics → increase head motion during scanning and alter blood pressure, respiration, heart rate Griffiths201 Holze2021 Olbrich2021
global signal regression has been found to substantively alter psychedelic effects on resting-state measures Preller2020 Preller2018