Prospective motion correction improves the sensitivity of fMRI pattern decoding.
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Authors
Alink, Arjen
Kriegeskorte, Nikolaus
Henson, Rik
Publication Date
2018-10Journal Title
Human brain mapping
ISSN
1065-9471
Volume
39
Issue
10
Pages
4018-4031
Language
eng
Type
Article
Physical Medium
Print-Electronic
Metadata
Show full item recordCitation
Huang, P., Carlin, J., Alink, A., Kriegeskorte, N., Henson, R., & Morgado Correia, M. (2018). Prospective motion correction improves the sensitivity of fMRI pattern decoding.. Human brain mapping, 39 (10), 4018-4031. https://doi.org/10.1002/hbm.24228
Abstract
We evaluated the effectiveness of prospective motion correction (PMC) on a simple visual task when no deliberate subject motion was present. The PMC system utilizes an in-bore optical camera to track an external marker attached to the participant via a custom-moulded mouthpiece. The study was conducted at two resolutions (1.5mm vs 3mm) and under three conditions (PMC On and Mouthpiece On vs PMC Off and Mouthpiece On vs PMC Off and Mouthpiece Off). Multiple data analysis methods were conducted, including univariate and multivariate approaches, and we demonstrated that the benefit of PMC is most apparent for multi-voxel pattern decoding at higher resolutions. Additional testing on two participants showed that our inexpensive, commercially available mouthpiece solution produced comparable results to a dentist-moulded mouthpiece. Our results showed that PMC is increasingly important at higher resolutions for analyses that require accurate voxel registration across time.
Keywords
Visual Cortex, Humans, Magnetic Resonance Imaging, Artifacts, Sensitivity and Specificity, Pattern Recognition, Visual, Head Movements, Image Processing, Computer-Assisted, Pattern Recognition, Automated, Adult, Functional Neuroimaging, Support Vector Machine
Sponsorship
A*STAR
Funder references
MRC (unknown)
Medical Research Council (MC_UU_00005/8)
Medical Research Council (MC_UU_00005/14)
Identifiers
External DOI: https://doi.org/10.1002/hbm.24228
This record's URL: https://www.repository.cam.ac.uk/handle/1810/283270