Max Planck researchers have made a groundbreaking discovery that helps explain why people with Parkinson's often report an impaired sense of smell. They discovered the total volume of glomeruli in the olfactory bulb of Parkinson's patients is only half of that found in people without the disease.
Loss of the sense of smell is a common symptom of Parkinson's disease that often precedes motor deficits. A new study may provide clues as to why the sense of smell diminishes in people with Parkinson's.
A new study reveals preference of odors can flip, depending on the situation.