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Support ICA on complex-valued data #1056

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tsalo opened this issue Mar 10, 2024 · 1 comment
Closed

Support ICA on complex-valued data #1056

tsalo opened this issue Mar 10, 2024 · 1 comment
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decomposition issues related to decomposition methods discussion issues that still need to be discussed effort: high More than 40h total work enhancement issues describing possible enhancements to the project impact: medium Improves code/documentation functionality for some users

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tsalo commented Mar 10, 2024 •
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Summary

I think we will start seeing more phase data from multi-echo protocols in the future.

Running ICA on complex-valued data can apparently produce better components than magnitude-only ICA (e.g., Yu et al., 2015).

Additional Detail

This is distinct from #1022, which would apply complex ICA to magnitude-only data.

I think GIFT has an implementation of entropy bound minimization (EBM) ICA, which apparently works better than FastICA on complex-valued data. We could maybe translate it to Python.
@tsalo tsalo added enhancement issues describing possible enhancements to the project decomposition issues related to decomposition methods discussion issues that still need to be discussed effort: high More than 40h total work impact: medium Improves code/documentation functionality for some users labels Mar 10, 2024
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tsalo commented Sep 9, 2024 •
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I'm planning to support GIFT (no translation needed) on complex-values data in fMRIPost-Phase, so as long as tedana can handle the mixing matrix format it should be fine.

@tsalo tsalo closed this as not planned Won't fix, can't repro, duplicate, stale Sep 9, 2024
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decomposition issues related to decomposition methods discussion issues that still need to be discussed effort: high More than 40h total work enhancement issues describing possible enhancements to the project impact: medium Improves code/documentation functionality for some users
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