Article 1 Parkinson disease 1 Parkinson's disease 1 adolescent 1 adult 1 aged 1 brain depth stimulation 1 child 1 comparative study 1 correlational study 1 euphoria 1 female 1 human 1 hypomania 1 local field potential 1 local field potentials (LFP) major clinical study 1 male 1 mood disorder 1 motor dysfunction 1 oscillation 1 retrospective study 1 subthalamic deep brain stimulation 1 subthalamus 1 theta oscillation 1 theta rhythm 1