This study will help to determine if using an investigational neuromodulation headset device will help treat non-motor symptoms associated with Parkinson's disease (PD). The effectiveness of neuromodulation will help oral dopamine replacement therapies to improve (1) activities of daily living related to motor function, (2) motor symptoms and (3) quality of life for patients with PD. The headset will be worn for a total of 40 minutes per day (two 20 minute intervals). The study will take place over a year and will require a study partner to participate. This is a randomized controlled trial that randomizes participants into an intervention group or a control group (placebo). Participants will not know which treatment they are receiving. Questions about quality of life such as; depression, anxiety, PD symptoms, will also be asked.

The purpose of this research study is to identify brain activation patterns in response to deep brain stimulation (DBS). To participate in this study, participants are required to have had a DBS implant or to be healthy controls without a history of a neurological disorder. Participants will undergo screening, a motor assessment session and a 30-minute Magnetic Resonance Imaging (MRI) session where their DBS device will be turned on and off in a cycled pattern. This study will be separated over 3 visits (Visit 1 for screening, Visit 2 for motor assessments and Visit 3 for the MRI scans). The total study duration will be approximately 5 hours.

This study will help to determine if UCB0599 (study drug) can slow the progression of Parkinson's Disease (PD.) The study will look to demonstrate the superiority of UCB0599 over placebo with regard to clinical symptoms of disease progression over 12 and 18 months in participants diagnosed with early-stage PD.
Study participation will take place over 19 months (16 Visits) and will consist of in-clinic and remote visits. Participants will take UCB0599 orally, in pill form.

Apathy is defined as a lack of feeling, emotion, interest, or concern. Apathy also involves reduction or loss of motivation and goal-directed behavior. Clinically significant apathy, where meaningful activities are given up and quality of life is diminished, is common in people with Parkinson's disease (PD).

Many individuals with Parkinson's disease experiencing fluctuations in the severity of their movement problems and medication "off" time. "Off" time refers to periods of the day between doses of PD medication when your motor symptoms (e.g., tremor, stiffness, slowness, walking problems, etc.) are worse and interfere with your ability to complete tasks of daily living. The investigational drug, Istradefylline, is an FDA-approved medication to treat motor fluctuations and "off" time in PD.

The purpose of this study is to investigate whether people with Parkinson's disease (PD) who are treated with istradefylline (ISD) show improvements in motivation and apathy over a 12-week period. Specifically, we wish to see whether people with PD who are treated with ISD engage in more physical and recreational activities, such as hobbies and other interests.

NeuroDerm Ltd. has begun a study of an investigational drug (also known as an experimental drug and is being studied to see if a disease or medical condition improves while taking it) called ND0612 as a possible treatment for Parkinson's disease. ND0612 is a solution of levodopa/carbidopa (LD/CD) delivered as a continuous subcutaneous (SC, meaning under the skin) infusion through a pump system to treat Parkinson's disease.

The study is divided into 6 periods. Those periods are as follows:
- Screening Period: 1-4 weeks
- Adjustment Period: 4-6 weeks
- Conversion Period: 4-6 weeks
- Maintenance Period: 12 weeks
- Open-Label Treatment Extension Period: 12 months
- Safety Follow-Up Period: 1-3 months

Subjects will need to come to the study center at least 8 times, and an additional 7 times if he/she participates in the treatment extension period; in addition to visits to the study center, some visits/activities will be performed over the phone.

The infusion pump is worn and administered via 2 infusion sites: abdomen or outer thigh, with locations being changed on a daily basis.

Parkinson's disease and stroke can cause lasting changes in walking and mobility. Non-invasive brain imaging methods including Magnetic Resonance Imaging (MRI) have been useful tools to understand the brains contribution to disrupted gait. In this study we are evaluating how activity in the brain in stroke and Parkinson participants changes when they are engaged in a gait-like behavior in the MRI scanner. We are seeking to recruit 10 participants with a diagnosis of PD, 10 participants with a history of stroke, and 10 age matched healthy control participants without a diagnosis of PD to undergo an hour of MRI scanning and an hour of gait assessments.

Neurological diseases are the leading cause of disability worldwide and a major contributor to health problems in children and adults. As the majority of these conditions result in lifelong disabilities, the implications for the family and for society is significant.

A significant number of adult and childhood neurological diseases have a genetic component and are caused by changes in our DNA and/or RNA leading to functional changes in the central nervous system. However, for many patients afflicted with these disorders, traditional genetic testing does not identify a clear genetic cause. The goal of this study will be to use newer genetic techniques to evaluate patients and families with neurological disorders to better understand the genetic basis of the disease.

Transcranial direct current stimulation (tDCS) has shown the potential to improve symptoms in patients with movement deficits, such as Parkinson's disease and chronic stroke. However, the effects of tDCS have so far not been proven on a wider scale due to lack of knowledge regarding exactly how tDCS works. This has limited the adoption of this potentially useful therapy for patients with Parkinson's disease, chronic stroke and other conditions affecting movement. We think that by studying the effect of tDCS on brain signals while subjects perform a virtual reality task that requires integration of visual and motor information we can separate out exactly what occurs in the brain when tDCS is turned on. We expect this approach to broaden our understanding of tDCS application in conditions affecting movement and possibly lead to therapeutic advances in this population.

This registry is designed for patients with Parkinson's Disease (PD) who are being considered for treatment with deep brain stimulation (DBS). A registry is a type of observational study that collects information about patients' medical conditions and/or treatments to better understand how a condition or treatment affects patients in the real world.The purpose of the research is to create a list of patients with Parkinson Disease who are all receiving DBS to learn more about the effects of DBS on their PD symptoms

Candidates for this study may or may not report disturbances in odor perception as their primary reason for seeking treatment at MUSC. This study is designed to collect long term, observational data from patients who are being treated with routine clinical care in health clinics at MUSC. Data from clinical questionnaires will be de-identified and stored in a database.