Has their voice gotten more quiet? We're doing a lot of work with people with Alzheimer's and particularly with Parkinson's, where that quiet voice that sometimes shows up with Parkinson's patients may be the best early indicator of Parkinson's five to 10 years before it shows up clinically.

One of the neurological conditions that can be treated with focused ultrasound are movement disorders, like Parkinson's or essential tremor.

In 2008, he decided to make a donation to the University of Maryland School of Medicine, where his mother is being treated.

Causes Tremor can be a symptom associated with disorders in those parts of the brain that control muscles throughout the body or in particular areas, such as the hands.