Medical

A drug's half life, molecular weight, permeability, chemical structure and methods of action through the pathways it affects.

Jerking, involuntary movements of the arms and legs. May occur normally during sleep.

A procedure that uses ultra high frequency sound waves to reveal patterns of blood flow. It is commonly used to help confirm stroke.

Of or referring to the substantia nigra.

A neurotransmitter found mainly in areas of the brain involved in governing autonomic nervous system activity, especially blood pressure and heart rate.

A change in a patient's condition that sees rapid fluctuations between uncontrolled movements and normal movement. Usually a response to long-term use of levodopa and probably caused by changes in the ability to respond to levodopa.

A large decrease in blood pressure upon standing; may result in fainting.

A surgical procedure in which a part of the brain called the globus pallidus is lesioned in order to improve symptoms of tremor, rigidity, and bradykinesia.

Wavelike contractions that move food through the digestive tract.

A cell that can engulf particles such as bacteria, other microorganisms, aged red blood cells, foreign matter, etc.