Coherence as a function of time

Hey,

How is it possible in MATLAB to calculate Coherence as a function of time for two nonstationary signals (EEG)?

Answer 1

[Bjorn Gustavsson]

Have a look at mscohere, and its help and documentation. It should allow you to calculate the coherence. My version resides in the signal processing toolbox. If you don't have that toolbox, I think you'd have to write your own versions of

spectrogram, and related functions, that will be a bit of a bother but shouldn't be toooooo hard if your application allows you to be a bit less general than Mathworks has to be.

HTH

[Hinna Ahmed]

Thank you very much. I have tried wih mscohere but it is not possible. I want to generate a similar image as shown below.