Ernst Julius Remak (26 May 1849, Berlin – 24 May 1911, Wiesbaden) was a German neurologist who was the son of famed neurologist Robert Remak (1815-1865) and the father of the mathematician Robert Remak (1888-1942).
He received his education at the Universities of Breslau, Berlin, Würzburg, Strasbourg and Heidelberg, and obtained the degree of M.D.
in 1870.
At Heidelberg, he was a student of neurologist Wilhelm Heinrich Erb (1840-1921).
Afterwards he took part in the Franco-Prussian War of 1870-71.
His name is associated with the eponymous "Remak reflex", which is plantar flexion of the first three toes and sometimes the foot with extension of the knee, induced by stroking of the upper anterior surface of the thigh.
This reflex takes place when the conducting paths in the spinal cord are interrupted.