Process_timefreq: FiltSpec empty for high frequency bands

Dear all,

I am trying to compute amplitude envelope correlation within 50-90 Hz, but it errors in process_timefreq at line 347, where the FiltSpec structure is empty for some reason. This does not happen for lower frequency bands.

Is there any limitation when defining a filter for higher frequencies?

Thank you,

Hi Ramtin,

My guess is 90 Hz is equal or higher than the Nyquist frequency, which is equal to sfreq/2
Can you check if that is the case?


1 Like

It is indeed - my bad!

I was not initially planning to look at 90 Hz, which is why I subsampled to 128 Hz.

Thank you,