title: Unilateral internuclear ophthalmoplegia with upbeat nystagmus from ischemic origin: evidence for the paramedian tract neurons as a vertical neural integrator?
abstract: Only a few cases with unilateral internuclear ophthalmoplegia have been reported presenting vertical nystagmus, and few of them provides convincing evidence for the paramedian tract neuron to be a vertical neural integrator. We report a patient who suffered from confined dorsal mid-upper pontine infarction showing unilateral internuclear ophthalmoplegia with upbeat nystagmus in primary position. This case possibly provide evidence that paramedian tract neurons may act as a vertical neural integrator in human.
authors.affiliation: Department of Neurology, Affiliated Qianfoshan Hospital of Shandong University Jinan, Shandong, China.
authors.forename: Zhang-Ning
authors.initials: ZN
authors.lastname: Zhao
authors.affiliation: Department of Neurology, Affiliated Jinan Central Hospital of Shandong University Jinan, Shandong, China.
authors.forename: Xiao-Lin
authors.initials: XL
authors.lastname: Li
authors.affiliation: Department of Neurology, Affiliated Qianfoshan Hospital of Shandong University Jinan, Shandong, China.
authors.forename: Gao-Ting
authors.initials: GT
authors.lastname: Ma
authors.affiliation: Department of Neurology, Affiliated Qianfoshan Hospital of Shandong University Jinan, Shandong, China.
authors.forename: Mei-Jia
authors.initials: MJ
authors.lastname: Zhu
keywords: Internuclear ophthalmoplegia; nystagmus; paramedian tract neuron; stroke