[FieldTrip] 4d data reading (248 sensor MEG system)

[jan-mathijs schoffelen]

Hi Mehmet,

Please have a look at http://fieldtrip.fcdonders.nl/getting_started/bti.

I would not recommend the .xyz/.m4d variant, but would directly read  
from the raw data files. Support for .xyz/.m4d files (these files  
contain relevant header information) is implemented in fieldtrip just  
for backward compatibility. These need to be created from the raw data  
(using the pdf2set command (see the software manual of the MEG-system  
for reference)), but contain only limited header information (e.g. the  
balancing coefficients are not extracted). To me this sounds like  
double work, because FieldTrip can read the header information from  
the raw files directly.

Good luck,

Jan-Mathijs




On Mar 10, 2011, at 6:36 AM, Mehmet-Akif Coskun wrote:

> Hello Dear Fieldtrip users,
>
>
>        I am a newbie in fieldtrip. I am having trouble reading the  
> 4d data in fieldtrip. We are using a 248 sensor 4D MEG system. I  
> have followed the discussion list and tried the suggestions but  
> haven't succeeded reading the data. As far as i understand, i need  
> some files (.xyz and .m4d) to be able to read the data but i don't  
> also know how to obtain these files. Can anyone explain me the steps  
> that i need to follow?
>
>
> Thanks in advance,
> Mehmet
>
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> fieldtrip at donders.ru.nl
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Dr. J.M. (Jan-Mathijs) Schoffelen
Donders Institute for Brain, Cognition and Behaviour,
Centre for Cognitive Neuroimaging,
Radboud University Nijmegen, The Netherlands
J.Schoffelen at donders.ru.nl
Telephone: 0031-24-3614793

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