Ocular flutter induced only by optokinetic stimulation.
J Clin Neurosci
; 13(4): 479-81, 2006 May.
Article
en En
| MEDLINE
| ID: mdl-16678730
Ocular flutter (OF) refers to occasional bursts of involuntary horizontal oscillation around the point of fixation, characterised by rapid horizontal repetitive oscillation without intersaccadic interval in electro-ocular recording. In spite of numerous reports of OF, there has been no previous report describing OF developed by simply looking at moving objects. We report a patient with olivopontocerebellar atrophy (OPCA), with OF induced only by optokinetic stimulation (OKS). A 65-year-old man, with OPCA complained of dizziness and oscillopsia occurring only with a specific type of eye movement. The electro-oculographic recording showed a decreased gain of pursuit, catch-up saccade, and decreased velocity of saccade, and OF was induced only by OKS of more than 40 degrees /second. In OPCA, partial loss of omnipause neurons and/or abnormal firing of burst neurons, especially those involved in optokinetic movement, could be the cause of OF occurring only with OKS.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Estimulación Luminosa
/
Trastornos de la Motilidad Ocular
Límite:
Aged
/
Humans
/
Male
Idioma:
En
Revista:
J Clin Neurosci
Asunto de la revista:
NEUROLOGIA
Año:
2006
Tipo del documento:
Article
Pais de publicación:
Reino Unido