Monocular Torsional Oscillopsia in Dentato-olivary Disconnection.
Dentate nucleus
Guillain-Mollaret triangle
Inferior olivary nucleus
Nystagmus
Oscillopsia
Journal
Cerebellum (London, England)
ISSN: 1473-4230
Titre abrégé: Cerebellum
Pays: United States
ID NLM: 101089443
Informations de publication
Date de publication:
27 Oct 2023
27 Oct 2023
Historique:
accepted:
22
10
2023
medline:
27
10
2023
pubmed:
27
10
2023
entrez:
27
10
2023
Statut:
aheadofprint
Résumé
Monocular torsional eye oscillations are a rare form of disconjugate nystagmus and the underlying pathophysiology is not well understood. Here, we present and discuss a case with disabling torsional oscillopsia in one eye only. The patient exhibited (i) spontaneous pendular torsional nystagmus of the left eye and (ii) rhythmic involuntary movements of the soft palate and uvula, consistent with the syndrome of oculopalatal tremor with monocular nystagmus. Brain MRI revealed an infarct of the left dentate nucleus in the cerebellum and, more caudally, a secondary hypertrophic degeneration of the right inferior olivary nucleus. To account for the presence of torsional nystagmus on the eye contralateral to the side of inferior olivary hypertrophy and ipsilateral to the lesioned dentate nucleus, we discuss the hypothesis of a (inferior olivary nucleus-mediated) malfunctioning adaptation of the anterior canal vestibulo-ocular reflex.
Identifiants
pubmed: 37889471
doi: 10.1007/s12311-023-01626-1
pii: 10.1007/s12311-023-01626-1
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
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