Process_timefreq: FiltSpec empty for high frequency bands

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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,
Ramtin

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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?

Best,
Raymundo

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3

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,
Ramtin