The study is being done to compare two ways of treating patients with a brain injury. At this time medical providers do not know if one way is better than the other. Both ways of treating patients are used in standard of care. None of the treatments in this study are investigational.

Do you have probable Dementia with Lewy Bodies (DLB), Mild Cognitive Impairment with "high likelihood" DLB, or Parkinson's Disease Dementia (PDD)? You may be able to participate in an observational study to track your disease progression and promote future research.

Assess the treatment of Ganaxolone.

The purpose of this study is to evaluate the safety and efficacy of ALXN1720 for the treatment of generalized MG (gMG) in adults with autoantibodies against AChR (AChR+).

The purpose of this study is to investigate the efficacy and safety of efgartigimod PH20 SC in adults with active idiopathic inflammatory myopathy.

This study is comparing a drug that treats bleeding in the brain related to a ruptured aneurysm as it is delivered via intravenous (IV) versus via a pill.

To determine the helpfulness of using images of brain anatomy to educate patients about their cognitive disorders.

We want to assess If the abnormal network patterns seen in seizure networks of epilepsy have similar implications when observed in patients with severe acute brain injury and therefore are modulated by antiseizure medication (ASM). If those networks respond to the ASM, then they may have a relationship with epileptogenic brain activity in this clinical context too and therefore could benefit from ASM even though they do not present ictal activity on their EEG.

The purpose of the HEALEY ALS Platform Trial is to develop and administer various clinical trials under different regimens with ALS to provide multiple treatment options for patients with ALS.

The purpose of this research study is to learn if and how non-invasive brain stimulation influences motivation problems in Parkinson's disease. Men and women aged 55-80 years with Parkinson's disease for at least 5 years can join the study. There are three study visits. Participation will involve answering questions, doing exercises where you squeeze a joystick to earn "rewards", recording of your brain activity, and receiving transcranial magnetic stimulation (TMS).