# Importing epoched CTF data

**URL:** <https://mne.discourse.group/t/importing-epoched-ctf-data/401>\
**Category:** Mailing List Archive (read-only)\
**Tags:** list-archive\
**Created:** [January 31, 2012, 7:39pm UTC](https://mne.discourse.group/t/importing-epoched-ctf-data/401 "2012-01-31T19:39:57Z")\
**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:** [January 31, 2012, 7:39pm UTC](https://mne.discourse.group/t/importing-epoched-ctf-data/401/1 "2012-01-31T19:39:57Z")

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Hi all,

I hate CTF data that I have already segmented into epochs and performed  
artifact rejection on; I'm now trying to work with them in MNE. I have been  
able to import the data using \*mne\_ctf2fiff\*, and I can open and view the  
data using \*mne\_browse\_raw --digtrig STIM \*. However, when I try to preview  
averages (following the tutorial instructions in section 12.7 of the  
manual) I run into a problem. MNE successfully finds the right number of  
triggers for each category I try to average, but then when the "Averages"  
window pops up it's just black. I never specified a channel layout, could  
that be the problem?

Thank you,  
Steve Politzer-Ahles

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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:** [February 1, 2012, 8:19am UTC](https://mne.discourse.group/t/importing-epoched-ctf-data/401/2 "2012-02-01T08:19:54Z")

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hi Steve,

do you see any log or message or warning in the terminal ? mne is  
usually quite verbose when it cannot find a file its looking for.

Alex