From structure to function: leveraging embedded multimodal imaging to explore brain connectivity
| smoia | |
| @SteMoia | |
| s.moia.research@gmail.com |
Maastricht, 31.10.2024
Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands; physiopy (https://github.com/physiopy)
Stefano Moia, 2024
From structure to function: leveraging embedded multimodal imaging to explore brain connectivity
Maastricht, 31.10.2024
Blood Oxygen Level Dependent (BOLD) signal
Image courtesy of Dimo Ivanov
BOLD signal: "Functional Networks"
Biswal et al., 1995 (Magn. Reson. Med.)
r(X, Y) = \frac{\text{cov}(X, Y)}{\sigma_X \sigma_Y}
Pearson correlation:
Whole brain functional connectivity
Huang et al., 2018 (Proc. IEEE)
From timeseries to graphs
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x_{k_{t}}=\sum x_{j_{t-1}}
Graph Signal Processing
Ortega 2022 (Introduction to Graph signal Processing)
Preti et al. (2019) Nat. Commun.; Huang et al. (2018) Proc. IEEE
Graph Signal Processing: Filtering
Decomposition
to access
"graph" spectral domain
NiGSP is an open development (python) toolbox to apply
Graph Signal Processing on neuroimaging data
It offers a set of function for filter creations, filtering, visualisation,
and metrics computations
Applying Graph Signal Processing: NiGSP
Moia et al. (2023) Zenodo
Preti et al. (2019) Nat. Commun.; Griffa et al. (2022) Neuroimage; Forrer et al. (2024) Biol. Psychiatry
pip install nigsp[all]
nigsp -f timeseries.nii.gz -s sc_mtx.tsv -a atlas.nii.gz --informed-surrogates -n 1000Moia et al. (2023) Zenodo; based on Preti, Van De Ville (2019) Nat. Commun. and Griffa et al. (2022) Neuroimage
Applying Graph Signal Processing: NiGSP
Thanks to...
That's all folks!
| smoia | |
| @SteMoia | |
| s.moia.research@gmail.com |
...you for the (sustained) attention!
...the MR-methods group @UM
Part of this research is supported by the European Union’s Horizon Europe research and innovation programme under the Marie Skłodowska-Curie grant agreement No 101109770
Stefano Moia, 2024
Find the presentation at:
slides.com/ephraim24/mbic-multimodal-connectivity/scroll
...the MIP:Lab @ EPFL
Any question [/opinions/objections/...]?
From structure to function: leveraging embedded multimodal imaging to explore brain connectivity
By Stefano Moia
From structure to function: leveraging embedded multimodal imaging to explore brain connectivity
CC-BY 4.0 Stefano Moia, 2024. Images are property of the original authors and should be shared following their respective licences. This presentation is otherwise licensed under CC BY 4.0. To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0/
