Cepstrum-quefrency without audio samples

I'm dealing with a project about emotion recognition through eeg and I use DEAP dataset.

I'd like to control if there are periodicities that could be reflected in space of cepstrum but I have not audio samples about this.

After, I'd like to do a simulation of the production system in specific emotional state through information in the quefrency;

Can someone help me with it?