nrs = numeric rating scale

dbs = deep brain stimulation ipg = internal pulse generator deep brain stimulation functional neurosurgery tinnitus ucsf = university of california, san francisco caudate nucleus executive function ac-pc = anterior commissure–posterior commissure ae = adverse event ef = executive function frsbe = frontal systems behavior scale gic = global impression of change ide = investigational device exemption moca = montreal cognitive assessment pd = parkinson disease tfi = tinnitus functional index thi = tinnitus handicap inventory wrs = word recognition score corticostriatal