[Eeglablist] re-reference to average of both earlobes

[Bradley Voytek]

Can't this just be done more easily via the EEGLAB GUI?
When you select "rereference", can't you just reference to the indices
of both ear electrodes to subtract the mean potentials?

::brad

On Sat, May 24, 2008 at 3:18 PM, David Groppe <dgroppe at cogsci.ucsd.edu> wrote:
>
>
> Hi Andre,
>  If your data was recorded using one earlobe as a reference, you can use the
> following function:
>
> http://www.cogsci.ucsd.edu/~dgroppe/EEGLAB/reref_bimastoid.m
>
> It was written for re-referencing data to the average of the mastoid
> electrodes, but it can do the job for you.  Where the function requests the
> index of the non-original-reference mastoid electrode (i.e., the variable
> "mastoid_id"), just use the index of the non-original-reference earlobe
> electrode.
>    cheers,
>      -David
>
> On Fri, 23 May 2008, Andre Cravo wrote:
>
>> Hello,
>>
>>  I`d like to know if anyone knows how to re-reference the data to the
>> average of both earlobes? I can re-reference the data to the average of
>> all
>> channels or to one of the earlobes, but not to the average of both
>> earlobes,
>> which is  very commonly used in the literature.
>>
>> Thanks,
>>
>>  André
>
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