Rapid spatial oculomotor updating across saccades is malleable
| Autor: | Jonathan van Leeuwen, Artem V. Belopolsky |
|---|---|
| Přispěvatelé: | Cognitive Psychology |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Eye Movements
Saccade curvature Computer science Adaptation (eye) 050105 experimental psychology Retina Saccade adaptation 03 medical and health sciences 0302 clinical medicine Remapping Reaction Time Saccades Humans 0501 psychology and cognitive sciences Computer vision Oculomotor competition business.industry 05 social sciences Adaptation Physiological Sensory Systems Ophthalmology Saccade Artificial intelligence Visual stability business 030217 neurology & neurosurgery Photic Stimulation |
| Zdroj: | Vision Research, 178, 60-69. Elsevier van Leeuwen, J & Belopolsky, A V 2021, ' Rapid spatial oculomotor updating across saccades is malleable ', Vision Research, vol. 178, pp. 60-69 . https://doi.org/10.1016/j.visres.2020.09.006 |
| ISSN: | 0042-6989 |
| DOI: | 10.1016/j.visres.2020.09.006 |
| Popis: | The oculomotor system uses a sophisticated updating mechanism to adjust for large retinal displacements which occur with every saccade. Previous studies have shown that updating operates rapidly and starts before saccade is initiated. Here we used saccade adaptation to alter life-long expectations about how a saccade changes the location of an object on the retina. Participants made a sequence of one horizontal and one vertical saccade and ignored an irrelevant distractor. The time-course of oculomotor updating was estimated using saccade curvature of the vertical saccade, relative to the distractor. During the first saccade both saccade targets were shifted on 80% of trials, which induced saccade adaptation (Experiment 1). Critically, since the distractor was left stationary, successful saccade adaptation (e.g., saccade becoming shorter) meant that after the first saccade the distractor appeared in a different hemifield than without adaptation. After adaptation, second saccades curved away only from the newly learned distractor location starting at 80 ms after the first saccade. When on the minority of trials (20%) the targets were not shifted, saccades again first curved away from the newly learned (now empty) location, but then quickly switched to curving away from the life-long learned, visible location. When on some trials the distractor was removed during the first saccade, saccades curved away only from the newly learned (but empty) location (Experiment 2). The results show that updating of locations across saccades is not only fast, but is highly malleable, relying on recently learned sensorimotor contingencies. |
| Databáze: | OpenAIRE |
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