A novel method for measuring saccade profiles using the scanning laser ophthalmoscope

Stetter, Martin and Sendtner, Raimund A. and Timberlake, George T. (1996) A novel method for measuring saccade profiles using the scanning laser ophthalmoscope. VISION RESEARCH, 36 (13). pp. 1987-1994. ISSN 0042-6989, 1878-5646

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Abstract

Most existing techniques for accurately measuring angular eye position vs time during a saccade (the saccade profile) need either contact to the eye or are restricted in time resolution. In this paper we introduce a new noninvasive method, with high spatial and temporal resolution, for determining saccade profiles using a scanning laser ophthalmoscope (SLO). This method uses the fact that images of a moving object taken with the SLO are not blurred (as are images from video cameras) but show a tilt with respect to images of the same stationary object. A mathematical framework is given that allows determination of a saccade profile from a restricted number of consecutive SLO video fields of the fundus during a saccade. The angular resolution obtained by this method is below 0.1 deg, and the maximum time resolution near 1 msec. Measured saccade profiles could be well approximated by a gamma function, the first derivative of which yields the saccade velocity profile. Measurements of peak saccade velocity as a function of saccade amplitudes (main sequence) using our method show good agreement with results obtained by other authors. Copyright (C) 1996 Elsevier Science Ltd.

Item Type: Article
Uncontrolled Keywords: VELOCITY; MOVEMENTS; scanning laser ophthalmoscope (SLO); saccade; eye movements; angular velocity; saccade profile
Subjects: 600 Technology > 610 Medical sciences Medicine
Divisions: Medicine > Lehrstuhl für Augenheilkunde
Depositing User: Dr. Gernot Deinzer
Date Deposited: 05 Jul 2023 06:14
Last Modified: 05 Jul 2023 06:14
URI: https://pred.uni-regensburg.de/id/eprint/51632

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