[Mne_analysis] No Events from mne_brain_vision2fiff

[Christian Brodbeck]

Thanks Matti! That solved the problem. 

-Christian


On Jul 29, 2012, at 13:57 , Matti Hamalainen wrote:

> 
> Hi Christian,
> 
> Investigation of the code revealed that mne_brain_vision2fiff handles only events which are marked "Stimulus" and whose number is given by S<number>. In your file, the events are obviously user responses. The easy solution is to replace in R0026_eref3h.vmrk the word "Response" with "Stimulus" and "R128" with "S128". You can also simply change "Response,R" to "Stimulus,S". 
> 
> I hope this helps.
> 
> - Matti
> 
> On Jul 29, 2012, at 6:45 AM, Christian Brodbeck wrote:
> 
>> Hello,
>> 
>> We are trying to convert brain vision EEG files using mne_brain_vision2fiff, but the resulting fiff files do not contain any events. This is the command I run:
>> 
>> 
>>    $ mne_brain_vision2fiff --header R0026_eref3h.vhdr --out R0026_eref3h.fif
>> 
>>    mne_brain_vision2fiff version 1.7 compiled at Jan  7 2011 02:26:21
>> 
>>    header  file           : R0026_eref3h.vhdr
>>    output file            : R0026_eref3h.fif
>> 
>>    Read header file : R0026_eref3h.vhdr
>>    Read header file : R0026_eref3h.vmrk
>> 
>>    nchan           = 4
>>    sfreq           = 500.0  Hz
>>    raw data file   = R0026_eref3h.eeg
>>    raw binary      = true
>>    raw binary type = 16
>>    raw endian      = little
>>    raw nsamp       = -1
>>    nevent          = 0
>>    eXimia          = false
>> 
>>    Data will be split into <= 1907.3 MByte pieces
>> 
>>    Writing header to R0026_eref3h_raw.fif ... [done]
>>    Writing raw data to R0026_eref3h_raw.fif ... Number of samples deduced from the raw file size : 628790
>>    [done]
>>    Wrote 1...628790 of 628790 samples total to R0026_eref3h_raw.fif
>>    Adding directory to R0026_eref3h_raw.fif...[done]
>> 
>> 
>> Eeglab finds the events so I assume the brain vision files are ok. Is this a known problem, or does anyone have an idea how to fix this? The files are small so if it helps I could upload them.
>> 
>> Thanks
>> 
>> -Christian
>> 
>> 
>> 
>> 
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>> 
>> 
> 
> 
> 
> ---------
> 
> Matti Hamalainen, Ph.D.
> Athinoula A. Martinos Center for Biomedical Imaging
> Massachusetts General Hospital
> 
> msh at nmr.mgh.harvard.edu
> mhamalainen at partners.org
> 
> 
> 
> 
> 
> 
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