[FieldTrip] Z-transformed coherence equation after spectral decomposition with Hanning taper

[Mazzini, Sara]

Dear Fieldtrip community,

I have a question with regards to the Z-transformed coherence, as explained in Schoffelen et al. (2005, 2011).
In the articles, Z-spectra difference in coherence between a channel pair is calculated after computing the spectral decomposition with a multitaper method and the coherence between the channel pair.
I was wondering how the Z-transformed coherence can be calculated when spectral decomposition is computed using a Hanning taper instead.
Would it then only be necessary to compute the inverse hyperbolic tangent of the coherence value for each condition and then subtract these (i.e. atanh(coherence_condition1) - atanh(coherence_condition2))?

Thank you in advance for any help with this question!


Best wishes,

Sara



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