orbicularis phenomenon
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orbicularis pupillary reflex — unilateral contraction of the pupil, followed by dilatation after closure or attempted closure of eyelids that are forcibly held apart. Called also Galassi pupillary, orbicularis, or Westphal Piltz phenomenon and Gifford, Gifford Galassi, or… … Medical dictionary
phenomenon — 1. A symptom; an occurrence of any sort, whether ordinary or extraordinary, in relation to a disease. 2. Any unusual fact or occurrence. [G. phainomenon, fr. phaino, to cause to appear] adhesion p. a p. manifested by the adherence of antigen… … Medical dictionary
Galassi pupillary phenomenon — orbicularis pupillary reflex … Medical dictionary
Piltz-Westphal phenomenon — orbicularis pupillary reflex … Medical dictionary
Westphal-Piltz phenomenon — orbicularis pupillary reflex … Medical dictionary
Piltz-Westphal phenomenon — Piltz West·phal phenomenon (piltsґ vestґfahl) [J. Piltz; Alexander Karl Otto Westphal, German neurologist, 1863–1941] orbicularis pupillary reflex … Medical dictionary
Westphal phenomenon pupillary reflex — West·phal phenomenon, pupillary reflex (vestґfahl) [Alexander Karl Otto Westphal, German neurologist, 1863–1941] orbicularis pupillary reflex … Medical dictionary
Westphal-Piltz phenomenon reflex — West·phal Piltz phenomenon, reflex (vestґfahl piltsґ) [A.K.O. Westphal; Jan Piltz, Austrian neurologist, 1870–1930] orbicularis pupillary reflex … Medical dictionary
Westphal phenomenon — 1. (A.K.O. Westphal) orbicularis pupillary reflex. 2. (C.F.O. Westphal) see under sign … Medical dictionary
reaction — 1. The response of a muscle or other living tissue or organism to a stimulus. 2. The color change effected in litmus and certain other organic pigments by contact with substances such as acids or alkalies; also the property that such substances… … Medical dictionary
