[Eeglablist] Shifted rejection boundaries in continuous data

[Maria Teresa Wijaya]

Dear Makoto,

I recorded my data using Biosemi Active two system with 64 electrodes at 
256Hz. Data were band pass filtered at 0.1-20 Hz and re-referenced 
offline first to nose reference to remove bad channels. Removed channels 
were interpolated and the data were re-referenced to average reference. 
I then checked the continuous data for non-typical artifacts, removed 
them, and saved the data with a new name. The shifted rejection 
boundaries problem appeared in this new data set.

Kindly let me know if I need to provide any other information.

Thank you.

Regards,
Maria



On Saturday 17,November,2012 01:33 PM, Makoto Miyakoshi wrote:
> Dear Maria,
>
> We need more information to identify what caused this.
> Could you tell me more detail?
>
> Makoto
>
> 2012/11/12 Maria Teresa Wijaya<a0089301 at nus.edu.sg>:
>    
>> Dear list,
>>
>> I did rejection on continuous data and noticed that the rejection
>> boundaries shifted from where they are supposed to be (picture here:
>> http://www.flickr.com/photos/89964745@N02/8178303896/in/photostream).
>> This happened to several of my subjects, and it also happened to someone
>> else in our lab before. My questions are:
>>
>> - What are the possible reasons of this shift?
>> - Is there any way I can know if any of my event triggers have also been
>> shifted or if only the rejection boundaries are shifted?
>>
>> Thank you for your help.
>>
>> Regards,
>> Maria
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>
>