Liepmann initiated “Apraxia theory”

Apraxia.

Humans need to perform skilled movements to successfully interact with their environment as well as take care of themselves and others. These important skilled purposeful actions are primarily performed by the forelimb, and the loss of these skills is called apraxia. This review describes the means of testing, the pathophysiology, and the clinical characteristics that define five different gene...

Liepmann's Imperial Counselor Re-visited: The First Documented Case of Disparity of Neural and Behavioral Handedness

After more than a century, Hugo Liepmann continues to hold a special position in elucidating the anatomy that underpins laterality of motor control (handedness). In this note, I will provide data as to the reason behind the right-sidedness of the apraxia in this patient, elucidating the exceptional laterality of his symptom (apraxia). Introduced to us as The Imperial Counselor, 1 the patient ha...

Apraxia Laurel

Challenging traditions in apraxia.

Apraxia is a symptom on the border between cognition and motor control. It is predominantly caused by left brain damage and frequently accompanied by aphasia. Theories of apraxia have been dominated by a model of the conversion of mental images into motor commands proposed more than 100 years ago by the German psychiatrist Hugo Liepmann and revived for modern cognitive neurology by Norman Gesch...

Challenging traditions in apraxia

Apraxia is a symptom on the border between cognition and motor control. It is predominantly caused by left brain damage and frequently accompanied by aphasia. Theories of apraxia have been dominated by a model of the conversion of mental images into motor commands proposed more than 100 years ago by the German psychiatrist Hugo Liepmann and revived for modern cognitive neurology by Norman Gesch...