Movie stimuli QA recommendations

Hi All,

I’m currently collecting and analyzing fMRI data for a small number of participants watching short film clips (between 20-secs to 3.5-mins) of different emotion types.

Two questions for the group:

  1. Does anyone have recommendations on how to do QA with these short films since the length of stimuli is too long for GLMs?
  2. If people respond to high arousal (scary) short film clips differently, either due to regulation or suppression, how do people usually go about analysis for these types of films?