[FieldTrip] Correlating frequencies: power to power

[Stephen Whitmarsh]

Dear Marion,

I think that the classical correlation is defined in terms of paired
observations.
You could interpolate or select matching data, but if it was me I would
just remove the problem of unequal number of observations by defining equal
time points in your frequency analysis: while it would take some CPU time,
it would save a lot of human time and effort :-)

Let me know if you have a question about how to do this thought.

Cheers,
Stephen







Op ma 7 sep. 2020 om 14:35 schreef Marion Vincent <
marion.vincent at univ-lille.fr>:

> Dear Fieldtrip community,
>
> I would like to  compute correlation between different frequency bands.
> My time-frequency analysis was computed differently for low and high
> frequencies. For example, I do no have the same number of TF bins for low
> (beta) and high (gamma) frequencies.
> I was wondering if there was a way to calculate the correlation bewteen
> these 2 frequency bands eventhough the number of points is not the same.
>
> Thanks,
> Marion
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> https://doi.org/10.1371/journal.pcbi.1002202
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