The definition of phase-locking value(PLV) in python-mne is correct?

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Please allow me to express my gratitude to your software,python-mne. I am a college student on neuroscience. In the following page, I found the PLV definition is given : PLV = |E[Sxy/|Sxy|]|.
https://mne.tools/stable/generated/mne.connectivity.spectral_connectivity.html?highlight=spectral_connectivity

The definition is different from that of in the reference ?Measuring phase synchrony in brain signals?.

Are these two equivalent or it is a mistake?I am looking forward to getting your help.

Best regards!
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Hi,

Thanks for pointing this out -- can you tell me/us what the definition
is in the reference "Measuring phase synchrony in brain signals"? I
don't have a copy of my own...

Best,
Phillip

???External Email - Use Caution???

Please allow me to express my gratitude to your software,python-mne.?I
am a college student on neuroscience.?In the following page, I found the
PLV definition is given : PLV = |E[Sxy/|Sxy|]|.
https://mne.tools/stable/generated/mne.connectivity.spectral_connectivity.html?highlight=spectral_connectivity

?The definition is? different from that of in the reference ?Measuring
phase synchrony in brain signals?.

Are these two equivalent or it is a mistake?I am looking forward to
getting your help.

Best regards!

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