eep and brainvision definetrial

[Susana Silva]

Hi

I am a new and very poor fieldtrip user. 
I am trying to use fieldtrip for analysis of eep files (ANT, ASA). First I 
tried eep “read” functions (fieldtrip\private), but there were problems 
with the MEX file (“invalid MEX file”). This applies to .cnt as well as 
to .avr.

Then I exported my eep files as brainvision. Now I can read the 
brainvision header file using the read_brainvision_vhdr, but not with 
read_fcdc_header; differently, I can read the brainvision trigger file 
with read_fcdc_event, but not with read_brainvision_vmrk.

When I try to do the trial definition, something is said about the 
function read_fcdc_header not being OK. As I can not use this function, it 
sounds logical. 

My questions are:
-	In my position – someone who has eep files and brainvision files, 
what is the most simple option: try to use eep or brainvision (at the 
moment, I can use neither!)
-	Can you give me an example of a trial definition based upon a 
brainvision file, let us say s1.eeg (data), s1.vhdr , s1.vmrk, where ‘s33’ 
(eventvalue) is the ‘Stimulus’ (eventtype)?
-	In case I can not do the trial definition, how exactly should I 
arrange my data so that they are equivalent to the output of “definetrial”?

Thank you,
Susana Silva 

----------------------------------
The aim of this list is to facilitate the discussion between users of the FieldTrip  toolbox, to share experiences and to discuss new ideas for MEG and EEG analysis. See also http://listserv.surfnet.nl/archives/fieldtrip.html and http://www.ru.nl/fcdonders/fieldtrip.