# Variance of ICA Components

**URL:** <https://mne.discourse.group/t/variance-of-ica-components/5544>\
**Category:** Support & Discussions\
**Tags:** preprocessing, eeg, ica\
**Created:** [September 6, 2022, 8:08pm UTC](https://mne.discourse.group/t/variance-of-ica-components/5544 "2022-09-06T20:08:51Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![kism](https://avatars.discourse-cdn.com/v4/letter/k/c67d28/32.png) [@kism](https://mne.discourse.group/u/kism)\
**Post date:** [August 13, 2024, 1:39pm UTC](https://mne.discourse.group/t/variance-of-ica-components/5544/11 "2024-08-13T13:39:00Z")

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Hello, I have a related question: I am consistently getting negative values for the explained variances on filtered data (highpass, lowpass and Maxwell together) after removing components with ica.exclude function based on eog/ecg\_inds. I have already asked for assistance with listing the individual variances of the components: [ica.get\_explained\_variance\_ratio for individual ICA components - #4 by richard](https://mne.discourse.group/t/ica-get-explained-variance-ratio-for-individual-ica-components/9144/4)  
Any explanation as to why this might be happening? I appreciate any insights you might have :).  
Thank you,  
M

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