[Eeglablist] automatic epoch rejection

Klados Manousos mklados at med.auth.gr
Tue Oct 28 13:45:53 PDT 2008


Στις 22 Οκτώβριος 2008 11:51 μμ, ο χρήστης Klados Manousos <
mklados at med.auth.gr> έγραψε:

> Dear Brion
>
> If you search in literature there exist a certain paper which suggest that
> eye blink's voltage is larger than 50 μV. So you can put a threshold of 50μV
> for eye blinks. If i understand you you need an automatic procedure to
> reject contaminated epochs. One very easy algorithm is to find epochs with
> values larger than 50 μV and exclude them for your study. I can't understand
> the reason you need different threshold for different channels. You can
> indetify contaminated epochs from one signal and in the others the epochs
> have to be the same...correct me if i uderstood wrong.
>
> Greetings
> Manos
>
> 2008/10/22 Brion Woroch <bworoch2 at illinois.edu>
>
> Hello,
>> I am looking for a way to set the threshold for  the "detection of
>> extremely large fluctuations" in the automatic epoch rejection
>> differentially for different channels.  I would like to set one
>> threshold for EOG channels and another for scalp electrodes.  Does
>> anybody know how I can accomplish this?  Thanks in advance.
>> Brion Woroch
>>
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>
>
>
> --
> Klados A. Manousos
> Graduate Student, Research Assistant
> Lab of Medical Informatics, Medical School
> Aristotle University of Thessaloniki
> Thessaloniki, Greece
> _________________________________________________
> Tel: +30-2310-999332
> Website :
> http://lomiweb.med.auth.gr/gan/index_files/Page1269.htm
>
>


-- 
Klados A. Manousos
Graduate Student, Research Assistant
Lab of Medical Informatics, Medical School
Aristotle University of Thessaloniki
Thessaloniki, Greece
_________________________________________________
Tel: +30-2310-999332
Website :
http://lomiweb.med.auth.gr/gan/index_files/Page1269.htm
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