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Title: Downbeat nystagmus elicited by eyelid closure
Author: Lemos, J
Pereira, D
Amorim, M
Santiago, B
Paiva, A
Cunha, L
Keywords: Movimentos Oculares
Nistagmo Patológico
Área Tegmentar Ventral
Issue Date: Dec-2014
Citation: J Neuroophthalmol. 2014 Dec;34(4):350-3.
Abstract: We describe a patient with downbeat nystagmus (DBN) evoked only by eye closure. Brain and spinal cord magnetic resonance imaging revealed a T2 paramedian lesion in the left lower basis pontis and other white matter lesions consistent with multiple sclerosis. One potential mechanism for DBN in this case involves transverse ephaptic spread of excitation from areas that subserve coordinated lid closure to the decussating ventral tegmental tract.
Peer review: yes
DOI: 10.1097/WNO.0000000000000123
Appears in Collections:NEU - Artigos
ORL - Artigos

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