PD symptoms cut across motor, physiological and volitional domains [e.g., postural instability, autonomic dysfunction, and reduced self-initiated activity (Bloem et al., 2021; Dauer and Przedborski, 2003)], mirroring SCAN connections to regions relevant for postural control, volition, and physiological regulation (Darby et al., 2018; Pool and Ransohoff, 1949; Siegel et al., 2014; Wall and Davis, 1951). Here, BLVRB is linked to Parkinson disease.