Jean Alexandre Barré

Jean Alexandre Barré (May 25, 1880 – April 26, 1967), French neurologist, worked in 1916 on the identification of the Guillain-Barré syndrome.

He is also credited with the Barré test, which may identify "pyramidal drift". This test is performed by making the patient stretch out his hands with the palms to the top, and requesting him to close his eyes. If one hand drops involuntarily, the test indicates damage to the pyramidal tract.