doll's head sign
doll's head sign
Neurology A clinical sign for evaluating brainstem function in a comatose Pt; in a normal person, as the head is turned rapidly to one side, the eyes conjugately deviate in the direction opposite to the head's movement; loss of this reflex implies dysfunction of brainstem or oculomotor nerves; inferolateral deviation of the eyes in combination with pupillary dilation implies dysfunction of 3rd cranial nerve, possibly due to tentorial herniationMcGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.