Saccadic trajectories change with amplitude, not time

L. A. Abel Ocular Motor Neurophysiology Laboratory, Cleveland VA Medical Center; Department of Neurology, Case Western Reserve University School of Medicine and University Hospitals of Cleveland; Department of Biomedical Engineering, University of Akron, Akron, OH, USA

S. Traccis Ocular Motor Neurophysiology Laboratory, Cleveland VA Medical Center; Department of Neurology, Case Western Reserve University School of Medicine and University Hospitals of Cleveland; Department of Neurology, Sassari University, Sassari, Italy

B. T. Troost Ocular Motor Neurophysiology Laboratory, Cleveland VA Medical Center; Department of Neurology, Case Western Reserve University School of Medicine and University Hospitals of Cleveland; Department of Neurology, Bowman Gray School of Medicine, Winston-Salem, NC, USA

L. F. Dell'osso Ocular Motor Neurophysiology Laboratory, Cleveland VA Medical Center; Department of Neurology, Case Western Reserve University School of Medicine and University Hospitals of Cleveland

Abstract

Abstract. Saccadic trajectories were examined in ten young normal subjects for amplitudes of 5,15,30, and 40 deg. Multiple saccades (m) and discrete decelerations (dd) were seen not in conjunction with any fatigue effect but rather as a function of amplitude, being much more frequent at larger amplitudes. The presence of m and dd in the large saccades of normals and in even small refixations of patients with myasthenia and Eaton-Lambert syndrome suggests that they are a normal consequence of high innervation levels.

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Saccadic trajectories change with amplitude, not time

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Saccadic trajectories change with amplitude, not time

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