# Should eog and ecg channel being excluded when	performing ICA?

**URL:** <https://mne.discourse.group/t/should-eog-and-ecg-channel-being-excluded-when-performing-ica/2304>\
**Category:** Mailing List Archive (read-only)\
**Tags:** list-archive\
**Created:** [August 29, 2020, 5:21pm UTC](https://mne.discourse.group/t/should-eog-and-ecg-channel-being-excluded-when-performing-ica/2304 "2020-08-29T17:21:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [August 29, 2020, 5:21pm UTC](https://mne.discourse.group/t/should-eog-and-ecg-channel-being-excluded-when-performing-ica/2304/1 "2020-08-29T17:21:06Z")

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External Email - Use Caution

Hi Group,

This maybe a trivial question but I would like to confirm it.

Say the raw consist channel of type eeg, eog, and ecg.  
Do we need exclude ( pick\_types ) the eog and ecg channel before prior to  
ica.fit  
\<[https://mne.tools/stable/generated/mne.preprocessing.ICA.html#mne.preprocessing.ICA.fit](https://mne.tools/stable/generated/mne.preprocessing.ICA.html#mne.preprocessing.ICA.fit)\>  
()

Thanks for the clarification

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [August 30, 2020, 12:06pm UTC](https://mne.discourse.group/t/should-eog-and-ecg-channel-being-excluded-when-performing-ica/2304/2 "2020-08-30T12:06:38Z")

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External Email - Use Caution

hi,

it's a good question.

You can definitely keep them in. What is most common is to keep EOG though  
It can help find the blink artifacts.

Alex