Velocity and acceleration statistics of pseudorandomly timed saccades in humans

• Published in: Vision research (Oxford) Vol. 15; no. 2; pp. 225 - 229
• Main Authors: Fricker, Stephen J., Sanders, James J.
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 1975
• Subjects: Acceleration; Adolescent; Adult; Aged; Child; Eye Movements; Female; Fixation, Ocular; Humans; Male; Middle Aged; Time Factors
• ISSN: 0042-6989; 1878-5646
• DOI: 10.1016/0042-6989(75)90211-4

A system is described for the recording and analysis of the angular velocities and accelerations associated with 20° horizontal saccades. The acceleration data are included in order to bring out details of the velocity waveforms which otherwise might be ignored. The saccades are induced by a target system which operates on a pseudorandom time base, so that the timing of the saccades is not predictable. Statistical results for average peak velocities and accelerations of each eye are given for a group of 40 normal subjects. In addition an analysis is presented of the differences of pairs of individual velocities and accelerations, to provide additional statistical data which emphasize the interrelationships of these dynamic parameters of the two eyes. The significance and possible application of these sets of normative data are discussed.