Metrics of saccade responses to visual double stimuli: Two different modes

Ottes, Fenno P.; Gisbergen, J.A.M. van; Eggermont, Jos J.

doi:10.1016/0042-6989(84)90172-x

Cited by 264 publications

(141 citation statements)

References 20 publications

Supporting

Mentioning

123

Contrasting

Unclassified

Order By: Relevance

“…However, averaging saccades, in general, have shorter latencies than target-directed saccades (Chou et al 1999;Coeffe and O'Regan 1987;Findlay 1981aFindlay , 1997Jacobs 1987;Ottes et al 1984Ottes et al , 1985Walker et al 1997), whereas in our study, the latencies of the corrective saccades had an almost linear relation with their final destinationsincreasing from the saccades that went to the old position to those that went mid-way and finally to those that went to the new position of the final target. In other words, for all subjects, the latencies of midway corrective saccades (mean across subjects ϭ 308 ms) were longer than the latencies of those directed to the old position (mean across subjects ϭ 298 ms) but shorter than the latencies of saccades directed to the new position of the final target (mean across subjects ϭ 354 ms).…”

Section: Decisions and Motor Planning During Error Correctioncontrasting

confidence: 38%

“…Instances of saccades being directed at a location midway between two simultaneously or sequentially presented targets have been previously reported (Becker and Jurgens 1979;Chou et al 1999;Ottes et al 1984) and is particularly observed when the angular distance between two targets is Ͻ30° (Ottes et al 1985) as in our study. However, averaging saccades, in general, have shorter latencies than target-directed saccades (Chou et al 1999;Coeffe and O'Regan 1987;Findlay 1981aFindlay , 1997Jacobs 1987;Ottes et al 1984Ottes et al , 1985Walker et al 1997), whereas in our study, the latencies of the corrective saccades had an almost linear relation with their final destinationsincreasing from the saccades that went to the old position to those that went mid-way and finally to those that went to the new position of the final target.…”

Section: Decisions and Motor Planning During Error Correctionmentioning

confidence: 50%

See 1 more Smart Citation

Control of Predictive Error Correction During a Saccadic Double-Step Task

Sharika¹,

Ramakrishnan²,

Murthy³

2008

Journal of Neurophysiology

View full text Add to dashboard Cite

Sharika KM, Ramakrishnan A, Murthy A. Control of predictive error correction during a saccadic double-step task. J Neurophysiol 100: 2757-2770, 2008. First published September 24, 2008 doi:10.1152/jn.90238.2008. We explored the nature of control during error correction using a modified saccadic double-step task in which subjects cancelled the initial saccade to the first target and redirected gaze to a second target. Failure to inhibit was associated with a quick corrective saccade, suggesting that errors and corrections may be planned concurrently. However, because saccade programming constitutes a visual and a motor stage of preparation, the extent to which parallel processing occurs in anticipation of the error is not known. To estimate the time course of error correction, a triple-step condition was introduced that displaced the second target during the error. In these trials, corrective saccades directed at the location of the target prior to the third step suggest motor preparation of the corrective saccade in parallel with the error. To estimate the time course of motor preparation of the corrective saccade, further, we used an accumulator model (LATER) to fit the reaction times to the triple-step stimuli; the best-fit data revealed that the onset of correction could occur even before the start of the error. The estimated start of motor correction was also observed to be delayed as target step delay decreased, suggesting a form of interference between concurrent motor programs. Taken together we interpret these results to indicate that predictive error correction may occur concurrently while the oculomotor system is trying to inhibit an unwanted movement and suggest how inhibitory control and error correction may interact to enable goal-directed behaviors.

show abstract

Section: Decisions and Motor Planning During Error Correctioncontrasting

confidence: 38%

Section: Decisions and Motor Planning During Error Correctionmentioning

confidence: 50%

Control of Predictive Error Correction During a Saccadic Double-Step Task

Sharika¹,

Ramakrishnan²,

Murthy³

2008

Journal of Neurophysiology

View full text Add to dashboard Cite

show abstract

“…It is clear that workers studying reading have in the past made use of principles derived from basic research on saccade generation. Examples of this are the analogy between the double-step studies and the SAS theories; the use of the concept of the saccadic range effect (Kapoula & Robinson, 1986) in McConkie et al's (1988) explanation of saccadic landing positions in reading; and O'Regan's (1990) use of the "global" or "centre of gravity" effect (Findlay, 1982;Ottes et al 1984;Deubel et al, 1984) in his strategy-tactics theory. However, many of the principles that have been appealed to were based on experimental work using very simple stimuli and tasks quite unlike those found in normal reading.…”

Section: Discussionmentioning

confidence: 99%

“…Depending on the timing, size and direction of this second target step, different effects on the saccadic behaviour can be observed -both the spatial end position and the latency of the saccade may be affected by the interfering target displacement, in characteristically different ways. Depending on its relative size and direction, the perturbing stimulus induces basically different effects, which led Ottes, van Gisbergen, & Eggermont (1984) to postulate two different "modes", one, in which averaging responses occur, and the other, in which a bistable response pattern prevails. The findings may be summarised as follows:…”

Section: What Can Be Learned From Basic Research On Saccade Programming?mentioning

confidence: 99%

Attention, Information Processing, and Eye Movement Control

Deubel¹,

Ο’Regan

Radach

2000

Reading as a Perceptual Process

View full text Add to dashboard Cite

“…2.4, the model does not cover the process of saccade generation itself. Previous models of saccade generation using DNFs (Kopecz and Schöner 1995;Wilimzig et al 2006) have addressed how the metric distance between saccade targets determines whether selection or averaging occurs, including in double-step paradigms (Ottes et al 1984;Aslin and Shea 1987). DNF models have addressed repulsion and attraction effects between metrically close items in related work on spatial working memory (Simmering et al 2008).…”

Section: Trans-saccadic Spatial Memorymentioning

confidence: 99%

A neural mechanism for coordinate transformation predicts pre-saccadic remapping

Schneegans

Schöner

2012

Biol Cybern

View full text Add to dashboard Cite

Whenever we shift our gaze, any location information encoded in the retinocentric reference frame that is predominant in the visual system is obliterated. How is spatial memory retained across gaze changes? Two different explanations have been proposed: Retinocentric information may be transformed into a gaze-invariant representation through a mechanism consistent with gain fields observed in parietal cortex, or retinocentric information may be updated in anticipation of the shift expected with every gaze change, a proposal consistent with neural observations in LIP. The explanations were considered incompatible with each other, because retinocentric update is observed before the gaze shift has terminated. Here, we show that a neural dynamic mechanism for coordinate transformation can also account for retinocentric updating. Our model postulates an extended mechanism of reference frame transformation that is based on bidirectional mapping between a retinocentric and a bodycentered representation and that enables transforming multiple object locations in parallel. The dynamic coupling between the two reference frames generates a shift of the retinocentric representation for every gaze change. We account for the predictive nature of the observed remapping activity by using the same kind of neural mechanism to generate an internal representation of gaze direction that is predictively updated based on corollary discharge signals. We provide evidence for the model by accounting for a series of behavioral and neural experimental observations.

show abstract

Metrics of saccade responses to visual double stimuli: Two different modes

Cited by 264 publications

References 20 publications

Control of Predictive Error Correction During a Saccadic Double-Step Task

Control of Predictive Error Correction During a Saccadic Double-Step Task

Attention, Information Processing, and Eye Movement Control

A neural mechanism for coordinate transformation predicts pre-saccadic remapping

Contact Info

Product

Resources

About