[Eeglablist] .bdf data converted to microvolts

[arno delorme]

Dear Abigail,

are you using a custom program to record BDF files. We are using Alois  
Schlogl function in the BIOSIG toolbox

http://biosig.sourceforge.net/

to import data so I would first download the latest version of his  
toolbox to see if you still experience the problem when importing the  
data from the command line (sopen and sread functions) and then get  
back to him if you still experience problems.

Best regards,

Arno

On 11 sept. 08, at 19:28, Abigail Mani wrote:

> EEGLAB users,
>
> EEG.data is in uV?.
> Where does EEGLAB convert the bdf data to uV.
> How is the conversion done?
>
> Sometimes in the eegplot() function under 'Value' i see values in  
> the range of 9000-10000, (even if I use EEG.data matrix, the values  
> are in this range)
> after filtering and resampling, i see different values in the  
> range : 150-200. (I was looking at EOG channels recorded with  
> BIOSEMI, sampled at 2048 Hz)
> Why does this happen?
> -- 
> Regards
> M Abigail
> _______________________________________________
> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
> To unsubscribe, send an empty email to eeglablist-unsubscribe at sccn.ucsd.edu
> For digest mode, send an email with the subject "set digest mime" to eeglablist-request at sccn.ucsd.edu