4D data reading

[Gopakumar Venugopalan]

Hello everyone, I have been wrestling with these problems for a while
too.
Here is what I found: Fieldtrip/EEGLAB will read neuroscan files (.avg,
and .eeg), and will read raw data (e,..)from 4D.
I believe that EEGLAB/Fieldtrip may not have a template for the 148-
Channel system co-ordinates. Christian and Don Rojas created one for me
in early April this year.
A FIF export from the 4D system may also solve this problem. Stephen
Moratti helped me with this a while a ago. It puts out three
files .xyz, .4D and the original e,.. file. But, if the .xyz file which
has coordinates for 148 channels does not match with the template, then
the data will not load. I think for one may have to load a create a 148
channel template for this purpose. This is my experience with EEGLAB,
and I think that they underlying engine is the same for both EEGLAB and
Fieldtrip
Then again, I may be completely wrong about everything except the
templates that were created for me.
regards
gopa


Quoting "Stancak, Andrej" <A.Stancak at LIVERPOOL.AC.UK>:

> Dear all,
>
>   we have some problems reading 4D Neuroimaging MEG data (148
> sensors). For now, we export original 4D data into BESA format, and
> then read those into FieldTrip. This is not optimal, as e.g. gradient
> coils information is not transferred into FieldTrip. We would be
> grateful for a plugin or a hint enabling us to read the 4D data
> directly into FieldTrip.
>
>   Best wishes
>   Andrej Stancak
>
>
> Prof. Andrej Stancak, PhD.
> The University of Liverpool
> School of Psychology
> The Eleanor Rathbone Building
> Bedford Street South, Room 209
> Liverpool
> L69 7ZA
>
> E:mail: a.stancak at liverpool.ac.uk  (primary)
>            stancak at centrum.cz (secondary)
> Phone: 0151 7946951
> Office hours: Monday 10-12, Wednesday 10-12
>
>
> ----------------------------------
> 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.
>

----------------------------------
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.