The investigators plan to examine the relation of perceptual variables-basic vision, unusual perceptual experiences(including but not limited to visual hallucinations)-to relevant functional variables such as cognition, mood, and alertness/sleepiness in an online sample of persons with Parkinson's disease (PwPD). It is hypothesized that unusual perceptual experiences will relate significantly to the selected variables. Participants do not need to experience visual hallucinations to be able to participate in this study. This is an observational study only, and not an interventional study.
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Noise Pareidolia Test
Timeframe: Baseline
Mooney Faces
Timeframe: Baseline
BU Hallucinations and Unusual Perceptual Experiences questionnaire (BU-HUPE)
Timeframe: Baseline
Prodromal Questionnaire, Brief Version (PQ-B)
Timeframe: Baseline
Parkinson's Disease - Psychotic Symptoms Scale (PD-PSS)
Timeframe: Baseline
Penn Online Evaluation of Migraine (POEM)
Timeframe: Baseline
Epworth Sleepiness Scale (ESS)
Timeframe: Baseline
Parkinson's Disease Sleep Scale-2
Timeframe: Baseline
Parkinson's Anxiety Scale (PAS)
Timeframe: Baseline
Center for Epidemiological Studies Depression Scale (CES-D)
Timeframe: Baseline
Parkinson's Disease Questionnaire - 39 (PDQ-39)
Timeframe: Baseline
NIH NeuroQoL measures
Timeframe: Baseline
The Movement Disorders Society Unified Parkinson Disease Rating Scale (MDS-UPDRS)
Timeframe: Baseline
Non-Motor Symptoms Questionnaire (NMSQ)
Timeframe: Baseline