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Saccadic eye movements to peripherally discriminated visual targets.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Viviani, Paolo Swensson, Richard G. |
| Copyright Year | 1982 |
| Abstract | Two experiments required subjects to identify a peripheral target embedded among nontarget stimuli and fixate it as quickly as possible with a single saccadic eye movement. Experiment 1 varied both the target distance and its angular position between trials; the mean oculomotor latency, the proportion of erroneous movements, and the proportion of (correct) movements followed by a corrective saccade all increased as a function of target distance. Experiment 2 held target distance constant (12.7 degrees) and used verbal instructions to manipulate the speed and accuracy of the subject's oculomotor performance between conditions. The speed/accuracy trade-off was similar for all subjects. The reduced uncertainty about target distance in Experiment 2 made each subject's oculomotor performance more efficient. Error trials not only included apparent perceptual errors (initial movements to nontarget stimuli) but also motor errors - that is, instances when the initial erroneous movement was followed, with an extremely short latency, by a large saccade to the target. The characteristics of these motor errors suggest that the saccade is not planned in terms of its amplitude and direction in retinal coordinates. |
| Starting Page | 2481 |
| Ending Page | 2484 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.safetylit.org/citations/ild_request_form.php?article_id=citjournalarticle_128071_38 |
| PubMed reference number | 6460077v1 |
| Volume Number | 8 |
| Issue Number | 1 |
| Journal | Journal of experimental psychology. Human perception and performance |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Embedding Eye Abnormalities Eye Movements Movement Retina Saccades |
| Content Type | Text |
| Resource Type | Article |
