The upper limit of human smooth pursuit velocity

Meyer, Craig H.; Lasker, Adrian G.; Robinson, David A.

doi:10.1016/0042-6989(85)90160-9

Cited by 203 publications

(125 citation statements)

References 3 publications

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“…Whether tracking behavior is different in the light and dark is not so much dependent on lighting per se (Collewijn & Tamminga, 1984) as it is on the velocity of the target. Although the angular velocities of the balls of Experiment 2 were somewhat faster than the ones in Experiment 1, they did not reach the upper limits of human smooth pursuit velocity (Collewijn, Steinman, & van der Steen, 1985;Meyer, Lasker, & Robinson, 1985). intercept fly balls in the dark.…”

Section: Resultsmentioning

confidence: 99%

Shedding some light on catching in the dark: Perceptual mechanisms for catching fly balls.

Oudejans¹,

Michaels²,

Bakker³

et al. 1999

Journal of Experimental Psychology: Human Perception and Perfor

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To catch a lofted ball, a catcher must pick up information that guides locomotion to where the ball will land. The acceleration of tangent of the elevation angle of the ball (AT) has received empirical support as a possible source of this information. Little, however, has been said about how the information is detected. Do catchers fixate on a stationary point, or do they track the ball with their gaze? Experiment 1 revealed that catchers use eye and head movements to track the ball. This means that if AT is picked up retinally, it must be done by means of background motion. Alternatively, AT could be picked up by extraretinal mechanisms, such as the vestibular and proprioceptive systems. In Experiment 2, catchers reliably ran to intercept luminous fly balls in the dark, that is, in absence of a visual background, under both binocular and monocular viewing conditions. This indicates that the optical information is not detected by a retinal mechanism alone.Although outfielders continue to catch fly balls without problems, scientists are still in search of the perceptual information that makes this behavior possible.

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Section: Resultsmentioning

confidence: 99%

Shedding some light on catching in the dark: Perceptual mechanisms for catching fly balls.

Oudejans¹,

Michaels²,

Bakker³

et al. 1999

Journal of Experimental Psychology: Human Perception and Perfor

View full text Add to dashboard Cite

show abstract

“…For example, response times can be different for "express saccade" makers and naïve subjects in gap-step-ramp experiments (Kimmig, Biscaldi, Mutter, Doerr, & Fischer, 2002). Also, humans are capable of matching velocities of up to 90º/s during the SP exhibited to a ramp stimulus with constant velocity (Meyer, Lasker, & Robinson, 1985). For unpredictable motion, it has been suggested that humans cannot pursue small targets at speeds faster than 40º/s (Young & Stark, 1963).…”

Section: Classification Of Fixations and Saccadesmentioning

confidence: 99%

Automated classification and scoring of smooth pursuit eye movements in the presence of fixations and saccades

2012

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Ternary eye movement classification, which separates fixations, saccades, and smooth pursuit from the raw eye positional data, is extremely challenging. This article develops new and modifies existing eye-tracking algorithms for the purpose of conducting meaningful ternary classification. To this end, a set of qualitative and quantitative behavior scores is introduced to facilitate the assessment of classification performance and to provide means for automated threshold selection. Experimental evaluation of the proposed methods is conducted using eye movement records obtained from 11 subjects at 1000 Hz in response to a step-ramp stimulus eliciting fixations, saccades, and smooth pursuits. Results indicate that a simple hybrid method that incorporates velocity and dispersion thresholding allows producing robust classification performance. It is concluded that behavior scores are able to aid automated threshold selection for the algorithms capable of successful classification.

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“…Deterioration of gain values can be related to the frequency of the stimulus, the rate of stimulus acceleration, and the maximum speed of the stimulus (e.g., Lisberger, Evinger, Johanson & Fuchs, 1981). For healthy adult subjects, the threshold values required to keep a gain of at least 0.8 in sinusoidal tests include a maximum velocity of approximately 100°/s (Meyer, Lasker & Robinson, 1985) and a maximum acceleration of about 1000°/s 2 (Lisberger et al, 1981). However, additional evidence has also indicated that there is very high intersubject variability with regards to smooth pursuit characteristics (e.g., Langenegger & Meienberg, 1988;Schalén, 1980).…”

Section: The Physiological Function and General Properties Of Smooth mentioning

confidence: 99%

Smooth Pursuit Eye Movement Adaptation in High Level Gymnasts

et al. 2012

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This study investigated long-term adaptations of smooth pursuit eye movement characteristics in high-level gymnasts and compared these responses to those of nonathletes. Gymnasts were selected because of their exceptional ability to spatially orient during fast, multiaxial whole body rotations. Participants were tested with standardized and supra-maximal sinusoidal smooth pursuit measurements. The results showed significantly higher gain values in top-level gymnasts, followed by young federal team gymnasts, followed by the nonathlete control group. By testing participants over the course of three years and also after periods of abstinence from training, changes to patterns of smooth pursuit over time are revealed. These results have interesting implications for understanding the characteristics of eye-movements in expert populations as well as understanding the general principles that underlie oculomotor adaptation.

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The upper limit of human smooth pursuit velocity

Cited by 203 publications

References 3 publications

Shedding some light on catching in the dark: Perceptual mechanisms for catching fly balls.

Shedding some light on catching in the dark: Perceptual mechanisms for catching fly balls.

Automated classification and scoring of smooth pursuit eye movements in the presence of fixations and saccades

Smooth Pursuit Eye Movement Adaptation in High Level Gymnasts

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