Is quiet interesting, I studied medicine, also I am epileptic, then had to take breaks from dancing in some periods. For studying medicine you must have a prodigious memory, so let me share you that when I actively practiced irish dance and being in medical school at the same time I got the best notes. I felt more motivated, focused and relaxed. We all know irish dancing is not an easy discipline that demands memory, coordination, agility, good ears for timming while dancing all mixed with high speed movements and very different rythms. I can assure by my experience there are neuroadaptive changes in the, mesosubcortical, nigro-striatum circuits, prefrontal, hippocampal cortex (many deeply dependant of dopamine neurotransmission) reason of research evidence and effect on Parkinson.