[Eeglablist] More than EEG channels in EEG structure, how can I add the channel locations information?

[Martin Simoneau]

Dear EEGlab users,

I record external analog signals (i.e., EMG and accelerometer signals) with the EEG signals (65-channels). When I try to add the channel locations, I get this warning:

The number of data channels (65) not including the fiducials does not correspond to the initial number of channels (77), so for consistency purposes new channel information will be ignored if this function was from EEGLAB. If you have added a reference channel manually, check the "Data channel" checkbox is off.

How can I add the channel location when the dataset contains other channel than EEG channels?

If I succeed with adding the channel locations information, will dipole fitting work thereafter?

Does anyone know how to manage this?

Your help will be appreciated!

Regards,

Martin