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Hi Vladimir, Thanks for the quick response. Do you know which .sfp file is being used to display the data from Neuroscan 64 channel eeg system? Thanks - M On Mon, Nov 22, 2010 at 5:35 PM, Vladimir Litvak <[log in to unmask]>wrote: > Dear Muhammad, > > You can find SPM's default channel locations in ASCII files with *.sfp > extension located in EEGtemplates subdirectory of SPM. I'm not sure > what locs format is but my guess is that if it is cartesian then it > should be quite similar to .sfp . However, it can also be something in > polar coordinates and then there is no simple way in SPM to convert to > that, but there is in EEGLAB. > > Best, > > Vladimir > > On Mon, Nov 22, 2010 at 9:19 PM, MP <[log in to unmask]> wrote: > > Hello all, > > I am analyzing ERP data with SPM8 and now I'd like to perform ICA on the > > ERPs. In order to do ICA (done by EEGIFT) I need the channel location > file > > in .locs format. I do not digitize electrode positions for each subject, > > therefore I don't have these channel location file. However, I see that > SPM8 > > does a really good job in realizing channel position, which I see when I > > press the "show sensors 3D positions" button, on the display. Is it > possible > > for me to export the sensor location from here into .locs file? Or, is > there > > any other way of getting this file? I am using Neuroscan SynAmps2 system > > with 64 channel cap. > > Thanks > > - Muhammad >