dbs = deep brain stimulation

pd = parkinson’s disease functional neurosurgery parkinson’s disease ap = action potential bk = big-conductance calcium-activated potassium eeg = electroencephalography gabaergic = pertaining to or affecting the neurotransmitter gamma-aminobutyric acid gpi = globus pallidus pars interna hfd = high-frequency discharge mcp = midcommissural point pd-mci = mild cognitive impairment in pd pdd = pd dementia microelectrode recording nbm = nucleus basalis of meynert nucleus basalis of meynert ipg = internal pulse generator deep brain stimulation tinnitus ucsf = university of california, san francisco caudate nucleus