Abstract
One of the common features of Wallenberg’s lateral medullary syndrome is the tendency to fall towards the side of the lesion, called lateropulsion [4]. Less well known, however, is ocular lateropulsion [9], i.e., a tonic drift of the eyes to the ipsilateral side, compatible with the direction of the body lateropulsion. Also, there is a directional preponderance of saccades to the side of the lesion [1, 10] affecting quick phases of vestibular and optokinetic nystagmus [9]. Thus, saccades to the contralateral side of the lesion, i.e., against the ocular bias, are hypometric, whereas ipsilateral saccades are hypermetric. Other oculomotor signs include cogwheel smooth-pursuit eye movements directed against the lateropulsive bias, i.e., to the contralateral side [1], and the ocular tilt reaction with skew deviation [6].
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© 1993 Springer-Verlag Berlin · Heidelberg
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Straube, A., Helmchen, C., Robinson, V.R., Fuchs, A., Büttner, U. (1993). Is Saccadic Lateropulsion in Wallenberg’s Syndrome Caused by a Cerebellar or a Brain-Stem Lesion?. In: Caplan, L.R., Hopf, H.C. (eds) Brain-Stem Localization and Function. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-78172-8_7
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DOI: https://doi.org/10.1007/978-3-642-78172-8_7
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