The general concept of apraxia and the classification of ideomotor apraxia were developed in Germany in the late 19th and early 20th centuries by the work of Hugo Liepmann, Adolph Kussmaul, Arnold Pick, Paul Flechsig, Hermann Munk, Carl Nothnagel, Theodor Meynert, and linguist Heymann Steinthal, among others.
Apraxia is a disorder of motor control which can be referred neither to “elemental” motor deficits nor to general cognitive impairment.The concept of apraxia was shaped by Hugo Liepmann about a hundred years ago.