Dear Olu,
in source level we only have released power time-series. So if you want
to correlate high frequency power to low frequency phase , then you
cannot do this with the released source level time-series. In this case
you would need to take the clean sensor level data , do the projection
to source level, perform time-frequency analysis there and then based on
the complex spectral coefficients compute cross-frequency coupling.
Let me know if I can help more
Best
Giorgos
On 2/9/2017 12:16 AM, Ajilore, Olusola wrote:
Hello,
The current HCP MEG source-level data includes within frequency band
power envelope correlations. I wanted to calculate cross-frequency
correlations with the same dataset. Can this be done with source-level
data (*.ptseries.nii) or does it have done at an earlier stage in the
pipeline?
Thank you,
Olu Ajilore, MD,PhD
Associate Professor
Associate Director, Residency Training and Education
Co-Director, Adult/Neuroscience Research Track
Department of Psychiatry
University of Illinois-Chicago
oajil...@psych.uic.edu <mailto:oajil...@psych.uic.edu>
brain.uic.edu <http://brain.uic.edu/>
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