Comparison of Horizontal, Vertical and Diagonal Smooth Pursuit Eye Movements in Normal Human Subjects

Rottach, Klaus G.; Zivotofsky, Ari Z.; Das, Vallabh E.; Averbuch‐Heller, Lea; DiScenna, Alfred O.; Poonyathalang, Anuchit; Leigh, R. John

doi:10.1016/0042-6989(95)00302-9

Cited by 95 publications

(88 citation statements)

References 28 publications

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“…Thus, the (at least partial) independence of the control processes involved may lead to diþ erent kinematics of the two components. Similar conclusions were reached regarding smooth pursuit eye movements, which also revealed upward± downward asymmetries in the vertical direction (Rottach et al, 1996). Second, in addition to the differential task-related dynamics of juggling in the horizontal and vertical direction (see above), the active constraints in both orthogonal components are markedly diþ erent in that the gravitational force constrains the time evolution of the balls in the vertical, but not in the horizontal, direction.…”

Section: Data Reduction and Analysissupporting

confidence: 56%

The coupling between point-of-gaze and ballmovements in three-ball cascade juggling: the effects of expertise, pattern and tempo

Huys¹,

Beek²

2002

Journal of Sports Sciences

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Section: Data Reduction and Analysissupporting

confidence: 56%

The coupling between point-of-gaze and ballmovements in three-ball cascade juggling: the effects of expertise, pattern and tempo

Huys¹,

Beek²

2002

Journal of Sports Sciences

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“…The difference between k x and k y suggests that the vertical tracing gain is smaller than the horizontal tracing gain. The directional asymmetry of gaze movement has previously been reported in smooth pursuit where horizontal movements were more accurate and faster than vertical movements (Rottach et al 1996). Our pattern of results suggests the possibility that such asymmetry also exists in saccadic eye movement.…”

Section: Linear Dependencysupporting

confidence: 68%

Gaze–mouse coordinated movements and dependency with coordination demands in tracing

Deng

Chang

Kirkby

et al. 2016

Behaviour & Information Technology

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Eye movements have been shown to lead hand movements in tracing tasks where subjects have to move their fingers along a predefined trace. The question remained, whether the leading relationship was similar when tracing with a pointing device, such as a mouse; more importantly, whether tasks that required more or less gaze-mouse coordination would introduce variation in this pattern of behaviour, in terms of both spatial and temporal leading of gaze position to mouse movement. A three-level gaze-mouse coordination demand paradigm was developed to address these questions. A substantial data set of 1350 trials was collected and analysed. The linear correlation of gaze-mouse movements, the statistical distribution of the lead time, as well as the lead distance between gaze and mouse cursor positions were all considered, and we proposed a new method to quantify lead time in gaze-mouse coordination. The results supported and extended previous empirical findings that gaze often led mouse movements. We found that the gaze-mouse coordination demands of the task were positively correlated to the gaze lead, both spatially and temporally. However, the mouse movements were synchronised with or led gaze in the simple straight line condition, which demanded the least gaze-mouse coordination.

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“…The average dot density was 40 dots deg 22 s 21 . A 'black' (0.5 cd m 22 ) segment reference line (length, 0.58; width, 0.158), starting 3.58 from the fixation point, served as a discrimination boundary ( figure 1a,b).…”

Section: (B) Apparatus and Stimulimentioning

confidence: 99%

“…Several studies have compared psychophysical and oculomotor performance in direction discrimination [17,18], but the results are equivocal. In particular, although effects such as reference repulsion and the oblique effect are consistently observed across different psychophysical experiments (see [19] as an example), studies investigating these effects with eye movements disagree in their conclusions [20,21].…”

mentioning

confidence: 99%

Do perceptual biases emerge early or late in visual processing? Decision-biases in motion perception

Zamboni¹,

Ledgeway²,

McGraw³

et al. 2016

Proc. R. Soc. B.

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Visual perception is strongly influenced by contextual information. A good example is reference repulsion, where subjective reports about the direction of motion of a stimulus are significantly biased by the presence of an explicit reference. These perceptual biases could arise early, during sensory encoding, or alternatively, they may reflect decision-related processes occurring relatively late in the task sequence. To separate these two competing possibilities, we asked (human) subjects to perform a fine motion-discrimination task and then estimate the direction of motion in the presence or absence of an oriented reference line. When subjects performed the discrimination task with the reference, but subsequently estimated motion direction in its absence, direction estimates were unbiased. However, when subjects viewed the same stimuli but performed the estimation task only, with the orientation of the reference line jittered on every trial, the directions estimated by subjects were biased and yoked to the orientation of the shifted reference line. These results show that judgements made relative to a reference are subject to late, decision-related biases. A model in which information about motion is integrated with that of an explicit reference cue, resulting in a late, decision-related re-weighting of the sensory representation, can account for these results.

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Comparison of Horizontal, Vertical and Diagonal Smooth Pursuit Eye Movements in Normal Human Subjects

Cited by 95 publications

References 28 publications

The coupling between point-of-gaze and ballmovements in three-ball cascade juggling: the effects of expertise, pattern and tempo

The coupling between point-of-gaze and ballmovements in three-ball cascade juggling: the effects of expertise, pattern and tempo

Gaze–mouse coordinated movements and dependency with coordination demands in tracing

Do perceptual biases emerge early or late in visual processing? Decision-biases in motion perception

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