Eye Movement Responses to a Horizontally Moving Visual Stimulus

Binocular quantification and characterization of microsaccades

“…Voluntary saccades are characterized by a strict peak velocity/amplitude correlation which often is referred to as the main sequence [23]. The main sequence has been proven correct previously also for involuntary microsaccades [20,24], and the present study confirmed these results ( Fig.…”

“…These results suggest a central mechanism for the maintenance of binocular fixation. A strict correlation between amplitude and peak velocity (main sequence) has been found for both voluntary saccades [23] and involuntary microsaccades [11,20]. Our study confirmed these results, with main sequence correlation coefficients consistently larger than 0.60 for test persons with a mean saccadic amplitude >0.4 deg (Fig.…”

Binocular quantification and characterization of microsaccades

“…Voluntary saccades are characterized by a strict peak velocity/amplitude correlation which often is referred to as the main sequence [23]. The main sequence has been proven correct previously also for involuntary microsaccades [20,24], and the present study confirmed these results ( Fig.…”

“…These results suggest a central mechanism for the maintenance of binocular fixation. A strict correlation between amplitude and peak velocity (main sequence) has been found for both voluntary saccades [23] and involuntary microsaccades [11,20]. Our study confirmed these results, with main sequence correlation coefficients consistently larger than 0.60 for test persons with a mean saccadic amplitude >0.4 deg (Fig.…”

Manual tracking enhances smooth pursuit eye movements

“…Both these observations show that the unpredictable target motion used in our study did not allow for the formation of an internal model of the target position to predict upcoming target position errors and preemptively program corrective saccades. Third, the phase lead at the lowest three frequencies observed in the Bode plots of the smooth pursuit eye movements is consistent with previously reported observations that smooth pursuit generates lead at low target motion frequencies (e.g., Collewijn & Tamminga, 1984;Dodge, Travis, & Fox, 1930;Drischel, 1958;Stark et al, 1962;Westheimer, 1954;Xia & Barnes, 1999). To ensure that smooth pursuit eye movements were not driven by a predictive mechanism in the current study, we assessed the time lag of smooth pursuit by cross-correlating the eye with the target velocity traces in each trial.…”

Relationship between static and dynamic stereo acuity.

“…are needed to start tracking. This estimate conforms well with the determinations of the response time of the eye to the presentation of a stimulus (Westheimer, 1954). Given that much time, Os form a judgment of the relative distance of the rods with rather stable precision irrespective of speed or accompanying localization error.…”

Binocular quantification and characterization of microsaccades

“…Voluntary saccades are characterized by a strict peak velocity/amplitude correlation which often is referred to as the main sequence [23]. The main sequence has been proven correct previously also for involuntary microsaccades [20,24], and the present study confirmed these results ( Fig.…”

“…These results suggest a central mechanism for the maintenance of binocular fixation. A strict correlation between amplitude and peak velocity (main sequence) has been found for both voluntary saccades [23] and involuntary microsaccades [11,20]. Our study confirmed these results, with main sequence correlation coefficients consistently larger than 0.60 for test persons with a mean saccadic amplitude >0.4 deg (Fig.…”

Manual tracking enhances smooth pursuit eye movements

“…Both these observations show that the unpredictable target motion used in our study did not allow for the formation of an internal model of the target position to predict upcoming target position errors and preemptively program corrective saccades. Third, the phase lead at the lowest three frequencies observed in the Bode plots of the smooth pursuit eye movements is consistent with previously reported observations that smooth pursuit generates lead at low target motion frequencies (e.g., Collewijn & Tamminga, 1984;Dodge, Travis, & Fox, 1930;Drischel, 1958;Stark et al, 1962;Westheimer, 1954;Xia & Barnes, 1999). To ensure that smooth pursuit eye movements were not driven by a predictive mechanism in the current study, we assessed the time lag of smooth pursuit by cross-correlating the eye with the target velocity traces in each trial.…”

Relationship between static and dynamic stereo acuity.

“…are needed to start tracking. This estimate conforms well with the determinations of the response time of the eye to the presentation of a stimulus (Westheimer, 1954). Given that much time, Os form a judgment of the relative distance of the rods with rather stable precision irrespective of speed or accompanying localization error.…”

Binocular quantification and characterization of microsaccades

“…Voluntary saccades are characterized by a strict peak velocity/amplitude correlation which often is referred to as the main sequence [23]. The main sequence has been proven correct previously also for involuntary microsaccades [20,24], and the present study confirmed these results ( Fig.…”

“…These results suggest a central mechanism for the maintenance of binocular fixation. A strict correlation between amplitude and peak velocity (main sequence) has been found for both voluntary saccades [23] and involuntary microsaccades [11,20]. Our study confirmed these results, with main sequence correlation coefficients consistently larger than 0.60 for test persons with a mean saccadic amplitude >0.4 deg (Fig.…”

Manual tracking enhances smooth pursuit eye movements

“…Both these observations show that the unpredictable target motion used in our study did not allow for the formation of an internal model of the target position to predict upcoming target position errors and preemptively program corrective saccades. Third, the phase lead at the lowest three frequencies observed in the Bode plots of the smooth pursuit eye movements is consistent with previously reported observations that smooth pursuit generates lead at low target motion frequencies (e.g., Collewijn & Tamminga, 1984;Dodge, Travis, & Fox, 1930;Drischel, 1958;Stark et al, 1962;Westheimer, 1954;Xia & Barnes, 1999). To ensure that smooth pursuit eye movements were not driven by a predictive mechanism in the current study, we assessed the time lag of smooth pursuit by cross-correlating the eye with the target velocity traces in each trial.…”

Relationship between static and dynamic stereo acuity.

“…are needed to start tracking. This estimate conforms well with the determinations of the response time of the eye to the presentation of a stimulus (Westheimer, 1954). Given that much time, Os form a judgment of the relative distance of the rods with rather stable precision irrespective of speed or accompanying localization error.…”