[Eeglablist] The orientation of the data and the scale factor of a BDF file

[Ayala Allon]

Hi Andreas,

Thank you very much for your help. Eventually I found *sload* (see
https://github.com/donnchadh/biosig/blob/master/biosig/t200_FileAccess/sload.m)
that returns the header of a BDF file:
[signal , header] = sload(filename, channels, 'OVERFLOWDETECTION:OFF');

Cheers,

Ayala

On Mon, Aug 7, 2017 at 3:23 PM, Andreas Widmann <widmann at uni-leipzig.de>
wrote:

> Hi Ayala,
>
> the pop_bdfread function from here:
> https://github.com/widmann/erptools/blob/master/pop_bdfread.m
> returns a BDF header structure as third output argument if requested.
>
> Note that EEGLAB’s pop_readbdf function shouldn’t be used anyway if you
> ever paused recording or CMS was out of range. See here for more details:
> https://sccn.ucsd.edu/bugzilla/show_bug.cgi?id=1373
>
> Hope this helps! Best,
> Andreas
>
> > Am 31.07.2017 um 17:42 schrieb Ayala Allon <ayalaallon at gmail.com>:
> >
> > Hi everyone,
> >
> > I would greatly appreciate your help on the following issues.
> >
> > I use BioSemi system and Active View version 7.05 to record the data,
> and I need to able to extract the following information from my BDFs files:
> > 1. The orientation of the data (e.g., Multiplexed).
> > 2. The scale factor.
> >
> > As I understand, this information is stored in the header of the BDF
> file (https://www.biosemi.com/faq/file_format.htm). However, I don't know
> a function in MATLAB with which I could also read the header of the BDF
> file.
> >
> > Currently I use pop_readbdf() to import the BDF file into MATLAB, and I
> don't think the EEGLAB data structure (the output) provides the above
> information.
> >
> > Does anyone know a way with which I could extract this information?
> >
> > Thank you in advance,
> >
> > Ayala
> >
> > --
> > Ayala Allon, PhD Candidate
> > The Visual Working Memory Lab
> > School of Psychological Sciences
> > Tel-Aviv University
> > ayalalallon at gmail.com
> > Check out my blog post on R-bloggers
> > http://people.socsci.tau.ac.il/mu/royluria/
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-- 
Ayala Allon, PhD Candidate
The Visual Working Memory Lab
School of Psychological Sciences
Tel-Aviv University
ayalalallon at gmail.com
Check out my blog post on R-bloggers
<https://www.r-bloggers.com/prepdat-preparing-experimental-data-for-statistical-analysis/>
http://people.socsci.tau.ac.il/mu/royluria/
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