The motor symptoms of Parkinson's disease result from the death of dopamine-generating cells in the substantia nigra, a region of the midbrain.

Link to Parkinson's Hub

Initial Overview based on Wikipedia entry Jan. 5, 2016.

A team led by scientists at The Scripps Research Institute (TSRI) has determined the basic structural organization of a molecular motor that hauls cargoes and performs other critical functions within cells.

Nature Structural and Molecular Biology 3/9/15

Researchers at MIT have developed a method to stimulate brain tissue using external magnetic fields and injected magnetic nanoparticles — a technique allowing direct stimulation of neurons, which could be an effective treatment for a variety of neurological diseases, without the need for implants or external connections.