# Bad epochs

**URL:** <https://mne.discourse.group/t/bad-epochs/1676>\
**Category:** Mailing List Archive (read-only)\
**Tags:** list-archive\
**Created:** [December 7, 2018, 10:07am UTC](https://mne.discourse.group/t/bad-epochs/1676 "2018-12-07T10:07:04Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [December 7, 2018, 10:07am UTC](https://mne.discourse.group/t/bad-epochs/1676/1 "2018-12-07T10:07:04Z")

</div>

External Email - Use Caution

Hi!  
When creating epochs, MNE sometimes drops epochs as 'bad' by default. Is  
there any way to avoid this, keeping all epochs, even the ones that MNE  
considers too noisy?

Best,  
Karin  
-------------- next part --------------  
An HTML attachment was scrubbed...  
URL: [http://mail.nmr.mgh.harvard.edu/pipermail/mne\_analysis/attachments/20181207/2202dc00/attachment.html](http://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/attachments/20181207/2202dc00/attachment.html)

---

<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [December 7, 2018, 10:19am UTC](https://mne.discourse.group/t/bad-epochs/1676/2 "2018-12-07T10:19:04Z")

</div>

External Email - Use Caution

Hi!

Yes, it depends on which function you use, but usually there is a reject\_by\_annotation parameter that you should set to False.

Clemens

---

<div class="post-metadata">

**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [December 7, 2018, 5:56pm UTC](https://mne.discourse.group/t/bad-epochs/1676/3 "2018-12-07T17:56:32Z")

</div>

External Email - Use Caution

In addition to the reject\_by\_annotation argument mentioned by Clemens, the  
Epochs() constructor also has a reject=None argument that will disable the  
automatic rejection of epochs based on signal peak-to-peak amplitude.