EEGLAB .DAT files not loading

I've loaded a .CNT file in EEGLAB successfully, however I need to add the .DAT file to use my data. Once the .CNT file was loaded I extracted epochs by selecting "Tools> extract epochs". I then go to "File > Import epoch info > From Neuroscan .DAT info file" And each time I'm left with an error "Expression or statement is incomplete or incorrect" "Error occurred in function pop_loaddat() at line 63)". When I open the .DAT file, I look at line 63 and nothing is unusual.

Please advise.

Thank you

[Christopher Davis]

The error you are getting is referring to EEGlab's function pop_loaddat, not the .dat file itself. Try:

 open pop_loaddat

and look at line 63. It should read:

 54 - if nargin < 2 
55 -  % ask user
56 -  [filename, filepath] = uigetfile('*.DAT', 'Choose a DAT file -- pop_loaddat'); 
57 -    drawnow;
58 -  if filename == 0 return; end;
59 -  result       = inputdlg2( { strvcat('Code signifying no event in a trial ([]=none)', ...
60 -                   '(none=all latencies are imported)')}, ...
61 -                   'Load Neuroscan DATA file -- pop_loaddat()', 1,  {'1000'}, 'pop_loaddat');
62 -  if length(result) == 0 return; end;
63 -  no_rt = eval( result{1} );
64 - end;

This is what I have with EEGlab v13.5.4b. Are you at least getting the dialog popup that says

 Code signifying no event in a trial ([]=none)
(none=all latencies are imported)

With 1000 as the default field entry?

[Walter Roberson]

Uggh, eval()'ing is a mistake far far more often than not.

[Ren]

Thanks for your help. I have the same script as you given:

open pop_loaddat

I tried the same process today and got a different error.

EEGLAB error in function loaddat() at line 58: Attempted to access tmpMat(3,:); index out of bounds because size (tmpMat)=[0,0].

Due to the error at line 58, I checked the loaddat() script and my line 58 matches yours.

I'm at such a loss...

[Maram Zarzoor]

I want answer this error please