Torsional, see-saw, 'bow-tie' nystagmus in association with brain stem anomalies

Joseph D. Weissman Departments of Neurology, VA Medical Center and University Hospitals, Case Western Reserve University, Cleveland, OH, 44106, USA

Scott H. Seidman Departments of Neurology, VA Medical Center and University Hospitals, Case Western Reserve University, Cleveland, OH, 44106, USA; Departments of Biomedical Engineering, VA Medical Center and University Hospitals, Case Western Reserve University, Cleveland, OH, 44106, USA

Louis F. Dell'osso Departments of Neurology, VA Medical Center and University Hospitals, Case Western Reserve University, Cleveland, OH, 44106, USA; Departments of Biomedical Engineering, VA Medical Center and University Hospitals, Case Western Reserve University, Cleveland, OH, 44106, USA

Mohammad H. Naheedy Departments of Radiology, VA Medical Center and University Hospitals, Case Western Reserve University, Cleveland, OH, 44106, USA

R. John Leigh Departments of Neurology, VA Medical Center and University Hospitals, Case Western Reserve University, Cleveland, OH, 44106, USA; Departments of Biomedical Engineering, VA Medical Center and University Hospitals, Case Western Reserve University, Cleveland, OH, 44106, USA

Abstract

The authors report a patient with syringomyelia, syringobulbia, and the Arnold-Chiari malformation who was noted clinically to have torsional nystagmus. Measurement of the nystagmus using the magnetic search coil technique revealed a mixed torsional, see-saw, 'bow-tie' waveform. It is postulated that a disturbance of central vestibular connections was the common pathogenesis for all components of the nystagmus.

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Torsional, see-saw, 'bow-tie' nystagmus in association with brain stem anomalies

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Torsional, see-saw, 'bow-tie' nystagmus in association with brain stem anomalies

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