Feb. 24, 2022
Nearly 3,000 illustrations, including video clips of neurologic disorders.
Every article is reviewed by our esteemed Editorial Board for accuracy and currency.
Full spectrum of neurology in 1,200 comprehensive articles.
Silas Weir Mitchell’s sway meter for measuring postural sway consisted of a pair of graduated rulers oriented perpendicular to each other and fixed upon a stand (Mitchell SW, Dercum FX. Nervous diseases and their treatment: general considerations. In: Dercum FX, editor. A Text-Book on Nervous Diseases by American Authors. Philadelphia: Lea Brothers & Co, 1895:2-50.)