[Mne_analysis] eeglab data in MNE

James Thompson jim.thommo at gmail.com
Fri Apr 27 17:56:51 EDT 2012
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Hi All,
I have an eeglab epoched EEG dataset that I would like to analyze
using MNE. I can export my eeglab *.set file as a *.EDF file and
convert it to fif using mne_edf2fiff easily enough. I changed channel
names, trigger to STI 014. I can also make an event.txt file. However,
when I load the fif file into mne_browse_raw I get no data and no
channels displayed (same if I load it into mne_analyze). The time
information displayed in mne_browse_raw is correct, and the event list
shows the events just fine. Just no data. I can load the fif file into
matlab using fiff_setup_read_raw and fiff_read_raw_segment and the
data looks fine in matlab. Same thing happens when it is an un-epoched
file.

I have two questions:
1. Am I doing it wrong with mne_browse_raw? If so, does anyone have
any suggestions. I've copied what is sent to the terminal when I load
the fif file below.

2. Given that I can read the file in fine, I should be able to write
it out using fiff_write_int, correct? I tried using
mne_ex_read_write_raw to read/write the file to see if that would make
something mne_browse_raw would like. It made a data file just fine,
but still nada.

Thanks in advance,
Jim

## First, loading in the *.fif file

--- Opening /home/jim/Desktop/Studies/EEG/jt_03/jt_03new_raw.fif ---

No compensation data in /home/jim/Desktop/Studies/EEG/jt_03/jt_03new_raw.fif
Compensation in file : uncompensated
Setting up compensation data...
	No compensation set. Nothing more to do.
No compensation was requested.
A new compensation value (uncompensated) was assigned to 0 MEG channels.
No SSS data in /home/jim/Desktop/Studies/EEG/jt_03/jt_03new_raw.fif
0 bad channels read from /home/jim/Desktop/Studies/EEG/jt_03/jt_03new_raw.fif
filter :   0.000 ...   40.0 Hz   bins : 0 ... 655 of 4097 hpw : 3 lpw : 41
Highpass filter will work as specified.
filter :   0.000 ...   40.0 Hz   bins : 0 ... 655 of 4097 hpw : 3 lpw : 41
Highpass filter will work as specified.
Initial dc offsets determined
Raw data file /home/jim/Desktop/Studies/EEG/jt_03/jt_03new_raw.fif:
	nchan  = 119
	nsamp  = 24000
	sfreq  = 500.000  Hz
	length = 48.000   sec
0 events found in /home/jim/Desktop/Studies/EEG/jt_03/jt_03new_raw-eve.fif
Trigger channel : STI 014 max_event : 0
No projection operator found in
/home/jim/Desktop/Studies/EEG/jt_03/jt_03new_raw.fif
Average EEG reference projection added.

--- Projection status ---

	# 1 : Average EEG reference : 1 vecs : 116 chs EEG active

--- Complete ---



## Now, the events file

Event file is in the new format
Loaded 7 events
Replace existing events



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