The Light Cupula: An Emerging New Concept for Positional Vertigo
Journal of Audiology & Otology
;
: 1-5, 2018.
Article
in English
| WPRIM
| ID: wpr-740319
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.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Nystagmus, Physiologic
/
Semicircular Canals
/
Vertigo
/
Supine Position
/
Diagnosis
/
Ear
/
Benign Paroxysmal Positional Vertigo
/
Head
Type of study:
Diagnostic study
Language:
English
Journal:
Journal of Audiology & Otology
Year:
2018
Type:
Article
Similar
MEDLINE
...
LILACS
LIS