Long-Term Behavioral and Cognitive Outcomes of Deep Brain Stimulation in Patients With Parkinson's Disease

Long-term characterization of DBS-STN on cognitive outcomes

Cognitive impairment change from baseline until 5 years in Montreal Cognitive Assessment (MoCA; min. 0, max. 30, higher score means better outcome) \[Time Frame: Annual assessments up to 5 years\]

Time frame: Annual assessments up to 5 years

Beck Depression Inventory

Depressive symptoms change from baseline to 5 year (BDI-II, min 0, max 63, higher score means worse outcome)

Time frame: Annual assessments up to 5 years

State-Trait Anxiety Inventory

Anxiety symptoms change from baseline to 5 year (STAI, min 20, max 80, higher score means worse outcome)

Time frame: Annual assessments up to 5 years

Questionnaire for Impulsive-Compulsive Disorders in Parkinson

Impulsivity change from baseline to 5 years (QUIP, min 0, max 112, higher score means worse outcome)

Time frame: Annual assessments up to 5 years

Pittsburgh Sleep Quality Index

Sleep Quality change (PSQI, min 0, max 21, higher score means poorer sleep quality)

Time frame: Annual assessments up to 5 years

Parkinson's Disease Questionnaire-8

Quality of life change from baseline to 5 years (PDQ-8, min 0, max 100, higher score means worse outcome)

Time frame: Annual assessments up to 5 years

Minnesota Multiphasic Personality Inventory 2-RF

Personality change from baseline to 5 years (MMPI-2-RF, cut-off: T\>65 for clinical scales)

Time frame: Annual assessments up to 5 years