Square wave oscillation the relationship of saccadic intrusions and oscillations

L. A. Abel Ocular Motor Neurophysiology Laboratory, Veterans Administration Medical Center and Department of Neurology, Case Western Reserve University School of Medicine, Cleveland, OH, USA

S. Traccis Ocular Motor Neurophysiology Laboratory, Veterans Administration Medical Center and Department of Neurology, Case Western Reserve University School of Medicine, Cleveland, OH, USA

L. F. Dell'osso Ocular Motor Neurophysiology Laboratory, Veterans Administration Medical Center and Department of Neurology, Case Western Reserve University School of Medicine, Cleveland, OH, USA

R. B. Daroff Ocular Motor Neurophysiology Laboratory, Veterans Administration Medical Center and Department of Neurology, Case Western Reserve University School of Medicine, Cleveland, OH, USA

B. T. Troost Ocular Motor Neurophysiology Laboratory, Veterans Administration Medical Center and Department of Neurology, Case Western Reserve University School of Medicine, Cleveland, OH, USA

Abstract

A patient with progressive supranuclear palsy exhibited an extremely high number of square wave jerks. These usually sporadic saccadic intrusions were so frequent as to form a continuous oscillation. Such a phenomenon suggests an underlying commonality between sporadic saccadic intrusions (square wave jerks, saccadic pulses and double saccadic pulses) and saccadic oscillations (macro square wave jerks, MSO and flutter).

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Square wave oscillation the relationship of saccadic intrusions and oscillations

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Square wave oscillation the relationship of saccadic intrusions and oscillations

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