Contralateral hyperactive caloric response in unilateral labyrinthine weakness.
In a series of 600 patients, 10 showed unilateral hyperactive caloric responses without a trivial explanation such as spontaneous nystagmus or directional preponderance. All 10 had unilateral weakness on the contralateral side, which was accompanied in 9 by cochlear hearing loss. It is assumed that the phenomenon of unilateral hyperreactivity in these cases can be explained by release from commissural inhibition on the basis of temporary vestibular decompensation.
Huygen
P L
PL
Department of Otolaryngology, Academic Hospital Nijmegen, The Netherlands.
Nicolasen
M G
MG
Verhagen
W I
WI
Theunissen
E J
EJ
D002150:Caloric Tests; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D007759:Labyrinth Diseases / Q000503:physiopathology; D012189:Retrospective Studies; D014722:Vestibule, Labyrinth / Q000503:physiopathology*