This study is an open-label study that will evaluate SAGE-718 on the cognitive effects in subject with early manifest Huntington's Disease (HD). The subject will be on study drug for a year. At clinic visits, participants will take the IP under staff supervision, followed by assessments of cognitive function, health-related function and quality of life, and neuropsychiatric symptoms.

Newborns who are born premature or suffer brain injury at birth are at risk for motor problems that may cause weakness in reaching and grasping on one side of the body. In older children, therapists may use a hand mitt and restraint for the stronger arm, to encourage use of the weaker side, called constraint-induced movement therapy (CIMT). Even with the high intensity therapy of CIMT, it typically takes between 40-120 hours total treatment time for most children to improve their motor skills. A non-invasive form of nerve stimulation, transcutaneous auricular vagus nerve stimulation (taVNS), stimulates a nerve by the ear that enhances learning motor skills. taVNS stimulation will be triggered by EMG sensors which detect muscle activity. The purpose of this study is to evaluate the safety and effectiveness of taVNS to improve motor skills when paired with CIMT in infants with one-sided weakness at 6-18 months of age.

The purpose of this study is to see if the study drug BOTOX®, is safe and helps to reduce upper limb essential tremor in adults who experience persistent tremor during movement. The study is 38 weeks long and includes 12 clinic visits. Participants will be injected with the study drug or placebo 3 times over the 38 week period. The participant will have to complete a set of questionnaires and assessments at each visit.

This study will test SAGE-718 to evaluate cognitive effects in subject with early manifest HD. The subject will be on study drug or placebo for 84 days. At clinic visits, participants will take the IP under staff supervision, followed
by assessments of cognitive function, health-related function and quality of life, and neuropsychiatric symptoms.

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.

Newborns who are born premature or suffer brain injury at birth are at risk for motor problems that may cause weakness in reaching and grasping on one side of the body. In older children, therapists may use a hand mitt and restraint for the stronger arm, to encourage use of the weaker side, called constraint-induced movement therapy (CIMT). Even with the high intensity therapy of CIMT, it typically takes between 40-120 hours total treatment time for most children to improve their motor skills. A non-invasive form of nerve stimulation, transcutaneous auricular vagus nerve stimulation (taVNS), stimulates a nerve by the ear that enhances learning motor skills. The purpose of this study is to evaluate the safety and effectiveness of taVNS to improve motor skills when paired with CIMT in infants with one-sided weakness at 6-18months of age.

The purpose of the first portion of this study is to gather feedback from clinicians on the usability of the current system and procedure, so the researchers can make reflex training more useful and usable for improving recovery after spinal cord injury or other nervous system injuries and diseases. The researchers are recruiting 20 therapists who have been actively practicing physical medicine and 30 adults with no known neurological conditions to test system usability and the reflex operant conditioning protocol. For this portion of the study, there are 5 visits. We will also recruit 15 adults with no neurological injuries, 15 adults with neuropathic pain, and 15 adults with non-neuropathic pain to participate in one visit to provide feedback on sensation caused by stimulating electrodes.

The purpose of the second part of the study is to validate the capacity of the system to change the size of the targeted reflex. For this the researchers are recruiting 25 individuals with chronic incomplete SCI who have spasticity in the leg to participate in the reflex training procedure. The study involves approximately 45 visits with a total study duration of about 6 months.

Hand disability after stroke has a profound negative impact on functional ability and independence. Hand therapy may be augmented with sensory stimulation for better outcomes. We have developed a novel sensory stimulation - unfelt vibration applied via a wristwatch. In this study, we will determine if combining this stimulation with hand task practice is superior to hand task practice alone.

Walking after a lower extremity amputation is often difficult. It is important that researchers and clinicians understand the mechanisms that inhibit normal walking function. In this study, we are recruiting individuals with lower extremity limb loss for a walking and balance investigation. We will also be studying matched healthy controls to do similar study procedures. All study procedures will occur on the campus of MUSC by a licensed Physical Therapist and experienced researcher. Any questions should be directed to the coordinator listed.

Transcranial direct current stimulation (tDCS) has shown the potential to improve symptoms in patients with motor deficits, however its effects have not been consistent in randomized studies to date, limiting widespread adoption of this technology. A critical gap in our knowledge is a detailed understanding of how tDCS affects motor areas in the brain. We propose using tDCS while recording directly from motor cortex using subdural electrocorticography (sECoG) in patients undergoing deep brain stimulation surgery. We expect this novel approach to broaden our understanding of tDCS application and possibly lead to therapeutic advances in this population.