Dear Haiteng,
In the MEG case the units are usually Tesla. So the threshold should
be quite a small number something of the order 1e-13. I suggest that
you look at some of your trials with the reviewing tool, plot single
channel data and look at the Y axis to determine what would be a
reasonable value in your case.
Best,
Vladimir
2009/3/23 hiten <[log in to unmask]>:
> Dear SPMers:
> Now I have a simple question.I use spm8 to process VSM MEG CTF_275 data.I
> am confused on the data's unit. After convert,epoch ,then Artefact,Answer
> 'no' to 'Read own artefact list?'. Answer 'no' to 'robust average?'. Answer
> 'yes' to 'Threshold channels?'answer all 275 channels,choose as threshold
> number(unti???),As described in CTF_MatlabImportExportRoutines.pdf,I think
> it may be'fT',but I am not sure.Am I right? It hope someone can give me some
> help.Thanks in andvance!
>
>
> --
> haiteng jiang
> Research Center for Learning Science,
> Southeast University
> Si Pai Lou 2 # , Nanjing, 210096, P.R.China
> Brain Imaging Lab
> Mobile:+86-13813998827
> Email: [log in to unmask]
>
>
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