The Light Cupula: An Emerging New Concept for Positional Vertigo
Journal of Audiology & Otology
; : 1-5, 2018.
Article
de En
| WPRIM
| ID: wpr-740319
Bibliothèque responsable:
WPRO
ABSTRACT
Benign paroxysmal positional vertigo (BPPV) is the most common type of positional vertigo. A canalolithiasis-type of BPPV involving the lateral semicircular canal (LSCC) shows a characteristic direction-changing positional nystagmus (DCPN) which beats towards the lower ear (geotropic) on turning the head to either side in a supine position. Because geotropic DCPN in LSCC canalolithiasis is transient with a latency of a few seconds, the diagnosis can be challenging if geotropic DCPN is persistent without latency. The concept of “light cupula” has been introduced to explain persistent geotropic DCPN, although the mechanism behind it requires further elucidation. In this review, we describe the characteristics of the nystagmic pattern in light cupula and discuss the current evidence for possible mechanisms explaining the phenomenon.
Mots clés
Texte intégral:
1
Indice:
WPRIM
Sujet Principal:
Nystagmus physiologique
/
Canaux semicirculaires osseux
/
Vertige
/
Décubitus dorsal
/
Diagnostic
/
Oreille
/
Vertige positionnel paroxystique bénin
/
Tête
Type d'étude:
Diagnostic_studies
langue:
En
Texte intégral:
Journal of Audiology & Otology
Année:
2018
Type:
Article