substantia nigra

This is a drawing of the intestines

Parkinson’s disease may originate in the intestines

Two months after injecting alpha-synuclein into the intestines of rats, researchers discovered the proteins had traveled to the brain via peripheral nerves. Four months later, the pathology was greater. Additionally, the protein had traveled to the heart. The study supports the hypothesis that Parkinson's disease may begin in the intestinal system before migrating to the brain. ... Read More...
brain scans

Personality and Mood Affect Brain Response to Personal Choice

Researchers report personality traits and psychological health impact how we value personal control when making decisions. The study reports brain activity in the motivation system is dampened in those with passive personalities and depression when we receive rewards that we have earned or feel in personal control of situations.... Read More...