[Eeglablist] How do I export a file from a BioPac system into EEGlab?

[James Desjardins]

Hi Neal

If you export the files from the BioPac in mat format, do you get memory errors if you load them directly into Matlab (  e.g. using >> dat=load('yourFileName.mat');  )?

If you export the data from the BioPac using .mat format and the Matlab "load" function does not produce memory errors try this...

... Save the following to an m file named "ImportBPMFormat.m" in the Matlab path.




function EEG = ImportBPMFormat(EEG, FileName, FilePath);

EEG.comments=sprintf('%s','Original file: ', FilePath, FileName);

fstruct=load(fullfile(FilePath,FileName));

EEG.data=fstruct.data';
EEG.srate=1000/fstruct.isi;
EEG.nbchan=size(EEG.data,1);
EEG.pnts=size(EEG.data,2);

for i=1:EEG.nbchan;
    EEG.chanlocs(i).labels=deblank(fstruct.labels(i,:));
end







...Then from the command line (after starting EEGLab) call:

EEG=ImportBPMFormat(EEG, 'yourFileName', 'yourPathName');
EEG=eeg_checkset(EEG);
eeglab redraw


... where yourFileName is the name of the file that you want to load and yourPathName is the path to the file.

If this does not work because of a memory error (or the Matlab "load" function alone generates a memory error) there are a few other things that can be explored.


James Desjardins, MA
Electrophysiology Technologist
Cognitive and Affective Neuroscience Lab, Psychology Department
Jack and Nora Centre for Lifespan Development Research
Brock University
500 Glenridge Ave.
St. Catharines, ON, Canada L2S 3A1
905-688-5550 x4676
--
"'Cause you never can tell What goes on down below!
"This pool might be bigger Than you or I know!"

McElligot's Pool
Dr.Seuss 1947
________________________________________
From: eeglablist-bounces at sccn.ucsd.edu [eeglablist-bounces at sccn.ucsd.edu] on behalf of Neal Hinvest [N.Hinvest at bath.ac.uk]
Sent: July-17-12 8:50 AM
To: eeglablist at sccn.ucsd.edu
Subject: [Eeglablist] How do I export a file from a BioPac system into  EEGlab?

Hi,

I am trying to run analysis though EEGlab after collecting EEG data from
  our BioPac unit. I have tried exporting files in .txt, .mat and .edf
format with no luck (memory seems to be insufficient). Is there a way
that EEGlab can read files from a BioPac? I have seen that a few people
have asked the same question on the archives of previous questions but
there was no answer given.

Any help would be greatly appreciated.

Many thanks,

Neal Hinvest

--
Dr Neal Hinvest
Lecturer
University of Bath
Bath
BA2 7AY
United Kingdom
_______________________________________________
Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
To unsubscribe, send an empty email to eeglablist-unsubscribe at sccn.ucsd.edu
For digest mode, send an email with the subject "set digest mime" to eeglablist-request at sccn.ucsd.edu