[Mne_analysis] Too short epochs

Eric Larson larson.eric.d at gmail.com
Fri Jun 5 10:01:57 EDT 2020
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> I’ve been preprocessing my EEG data using standard preprocessing steps
> such as highpass filtering (1Hz), line noise removal, downsampling,
> removing noisy channels, and ICA and downsampling using MNE

Downsampling the raw data or when constricting epochs with `decim` or after
creating epochs with `epochs.decimate`? Generally downsampling / resampling
raw is discouraged...

> When I then epoch my data it drops the majority of the epochs (40 out of
> 70 with a sampling frequency of 250 and 60 out of 70 with a sampling
> frequency of 100). The drop_log indicates that all of the epochs were
> dropped because they were too short.

This can happen if you resample raw and then don't adjust your `events`
array to compensate, perhaps this is what happened?

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