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Dear Feng,

That depends on how variable the head locations are between subjects.
You can assess that by plotting the 3D sensor locations for all the
subjects together.  In the near future we are planning to add a tool
for normalizing M/EEG data across subjects. For now you can try using
ft_megrealign if you think there is a serious problem.

Best,

Vladimir

On Thu, May 27, 2010 at 3:48 PM, gao zai <[log in to unmask]> wrote:
> Dear all,
>
> Currently I am trying to do Dipole fitting on my MEG data, and I have one
> question that I want to consult:
>
> If I want to do the dipole fitting on the grandaverage of 12 subjects, can I
> just first put the grandaverage data into the dipole module, or I should
> first normalize the sensor positions since it is changed across the
> subjects.
>
> Thank you very much in advance,
>
> Best,
> Feng
>