Microsaccades during finely guided visuomotor tasks

Winterson, Barbara J.; Collewun, Han

doi:10.1016/0042-6989(76)90156-5

Cited by 134 publications

(84 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is well known that knowledgable subjects experienced in eye movement experiments, as well as naive, inexperienced subjects, can suppress saccades for many seconds after simple verbal instructions Steinman, Cunitz, Timberlake, & Herman, 1967;Winterson & Collewijn, 1976). Recently, the same results have been obtained for naive subjects with amblyopia, who can suppress saccades for many seconds after verbal instructions despite the presence of the high drift velocities characteristic of amblyopia (Ciuffreda, Kenyon, & Stark, 1979;Schor & Hallmark, 1978).…”

Section: Comparison With Studies Of Vision With Stabilized Imagessupporting

confidence: 64%

“…Subjects can also suppress saccades for many seconds with many different kinds of stimuli, for example, simple forms (Murphy, Haddad, & Steinman, 1974), large flickering fields (Haddad & Winterson, 1975), and moving backgrounds (Murphy, Kowler, & Steinman, 1975), and while performing visual, cognitive, and visuomotor tasks, for example, making contrast threshold judgments about a moving sinusoidal grating (Murphy, 1978), counting visual items (Kowler & Steinman, 1977, 1979, and threading a needle and aiming and shooting a rifle (Winterson & Collewijn, 1976).…”

Section: Comparison With Studies Of Vision With Stabilized Imagesmentioning

confidence: 99%

See 1 more Smart Citation

Transient stimulation does not aid visual search: Implications for the role of saccades

Kowler

Sperling

1980

Perception & Psychophysics

View full text Add to dashboard Cite

Previous demonstrations that performance on visual search tasks with briefly flashed presentations declines over time after the initial onset imply that saccades might be necessary for efficient acquisition of visual information. We imposed an additional abrupt onset and a displacement on character arrays containing letters and one numeral while subjects searched for the numeral. Presentations were always followed by a visual noise field. Presentation time varied (50-800 msec). We found that performance with presentations containing one onset and remaining continuously visible was better than performance with presentations containing two onsets and containing displacements. Furthermore, information acquired near the onset of a continuous presentation was as effective as information acquired later. Our results demonstrate that abrupt onsets and displacements do not improve information acquisition with displays of alphanumeric characters. This finding is consistent with earlier reports that saccade-like retinal image motion does not contribute either to the maintenance of target visibility or to visual acuity.Saccadic eye movements are obviously necessary for efficient visual information processing because they bring retinal images to the fovea where visual acuity is best. But this may not be the only useful role for saccades. Saccades can also aid visual information processing when visual details are already foveal and clearly distinct.For example, Kowler and Steinman (1977) found that saccades were helpful for counting items that were haphazardly arranged in a 2-deg-diam display.In their experiment, subjects were required to count the items while either using saccades to scan around the display or not using saccades and maintaining the line of sight exclusively with slow eye movements at the center of the display. Counting accuracy was found to be 50010 higher when saccades were used. But the reason that saccades were so helpful for counting was not that directing the line of sight at, or very near, items was necessary in order to see them distinctly. On the contrary, subjects noted that all the items could be easily distinguished when the This research was supported by NIH Postdoctoral Fellowship SF32EY05235 to E. Kowler. We thank B. Fischer for serving as a subject, P. Burt, J. C. Falmagne, G. Iverson, M. Pavel, and R. M. Steinman for their useful suggestions, and 1. Nicholson for typing the manuscript. Requests for reprints should be addressed to E. Kowler,

show abstract

Section: Comparison With Studies Of Vision With Stabilized Imagessupporting

confidence: 64%

Section: Comparison With Studies Of Vision With Stabilized Imagesmentioning

confidence: 99%

Transient stimulation does not aid visual search: Implications for the role of saccades

Kowler

Sperling

1980

Perception & Psychophysics

View full text Add to dashboard Cite

show abstract

“…(iv) Intersaccadic intervals during reading are comparable to inter-microsaccadic intervals during fixation on a single letter [36]. (v) Saccade and microsaccade rates can be reduced intentionally and during specific tasks [37][38][39][40]. (vi) Voluntary saccades can be as small as fixational microsaccades [41].…”

Section: Glossarymentioning

confidence: 99%

Microsaccades: a neurophysiological analysis

Martínez-Conde

Macknik

Troncoso

et al. 2009

Trends in Neurosciences

333

307

View full text Add to dashboard Cite

“…Interestingly, Tse, Sheinberg, and Logothetis (2002) did not find differences in fixational eye-movements for changes induced by a peripheral flash in their paradigm between flash and non-flash conditions. Their paradigm included five display changes within a trial duration of less than 1.5 seconds, where stimulus onset asynchronies between cue and target ranged from 12 ms to 447 ms. High-acuity instructions (Bridgeman & Palca, 1980;Winterson & Collewijn, 1976) as well as display changes (Reingold & Stampe, 2000;Engbert & Kliegl, 2003b) decrease the rate of microsaccades. Consequently, a rapid sequence of five display changes will induce a strong inhibition of microsaccades.…”

mentioning

confidence: 99%