I mean, the research paper from the study doesn't reference dopamine at all. It focuses on electric pulses associated with visual interpretations of the environment. It does reference a reward system stating "arguably the main purpose of extracting the underlying structure of temporal sequences is to predict what is likely to happen next in order to choose appropriate actions and maximize reward." But it appears as if this is variable for each situation for each participant. Nonetheless, I like where your head's at, I just don't see it being associated with the analysis.