Dear Paul,
SPM is very bad in preserving units. If you used the MEEGTools
function it might be easy to get meaningful units (you just need to
figure out what they are). If you used the new source extraction
functionality in the latest update, it's much trickier. I tried to see
if it's possible to retain meaningful units and gave up for now as
there are too many rescaling steps in the code.
Best,
Vladimir
On 19 Apr 2011, at 06:24, Paul Sowman <[log in to unmask]> wrote:
> What are the correct units for the dipole extracted waveforms. I have an evoked source waveform from the auditory cortex which has a field intensity of about +/- 40000. I guess its not nAm. Thanks for the advice. Paul
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