Utilizing intraindividual cognitive variability to predict progression in stage 2 neuronal synuclein disease.
OBJECTIVE Neuronal synuclein disease (NSD) involves pathological α-synuclein presence and often dopaminergic dysfunction, initially preceding overt clinical symptoms. NSD-Integrated Staging System identifies Stage 2A (no dopaminergic dysfunction) and 2B (dopaminergic dysfunction) as prodromal phases marked by subtle cl...