[Eeglablist] Gedesic Mircomed comparison

[Makoto Miyakoshi]

Dear Gian Marco,

> Do you think that the data coming from these two systems can be compared

Oh yeah, definitely yes. Why not?

Just in case, it is safer if you could double check if the two systems have
the same gain setting i.e. is 1 uV in one system also 1 uV in the other
system?
Also, beware of differences in the initial references just in case.
Practically, if you perform average reference in the end, given 128
channels for both it should not be a problem.

Makoto

On Thu, Jul 2, 2020 at 3:05 PM Gian Marco Duma <gmduma90 at gmail.com> wrote:

> Hi everyone, I'm analyzing a dataset and I need a suggestion. The data have
> been collected from two different groups: epilepsy patients and control
> patients. Unfortunately the data have been collected with different
> systems, the epilepsy group has been collected using Micromed 128 channels,
> and the control one with Geodesic 128 channels. I would like to do a
> between group analysis. I solved the problem of the different spatial
> location by reducing the channel array using the correspondence of the EGI
> montage with the 10:10 montage. Unfortunately I'm not sure if the signal
> coming from the EGI can be compared with the one coming from a micromed
> system. Do you think that the data coming from these two systems can be
> compared or you suggest me to avoid a between group analysis in this case?
> thanks
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