[Eeglablist] Average Reference

[James Desjardins]

Hi Fengji,

Yes, when computing the average reference of raw Net Station data you  
should click "retain old reference channels in data". Doing this  will  
create channel 129 (Cz).

There is no down side to retaining the Cz reference channel in your  
data... and if you don't retain it at the time of the initial  
re-referencing I do not think that there is any way of retrieving Cz  
at a later stage in the processing.


James Desjardins
Technician, MA Student
Department of Psychology, Behavioural Neuroscience
Cognitive and Affective Neuroscience Lab
Brock University
500 Glenridge Ave.
St. Catharines, ON, Canada
L2S 3A1
905-688-5550 x4676


Quoting Fengji Geng <kittymoonfly at gmail.com>:

> Hi folks,
> I have a question about average reference. I imported data from Net Station
> to EEGLAB. There are 128 channels. CZ is the reference channel, which is not
> included in these 128 channels. When I compute average reference, do I have
> to click *the retain old reference channels in data*? In the tutorial, it
> just indicated that do *click this box when the recording reference was on
> the scalp itself*.
> Thanks!
>
> --
> Fengji
>