Motion distractors perturb saccade programming later in time than static distractors
The mechanism that reweights oculomotor vectors based on visual features is unclear. However, the latency of oculomotor visual activations gives insight into their antecedent featural processing. We compared the oculomotor processing time course of grayscale, task-irrelevant static and motion distra...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-01-01
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| Series: | Current Research in Neurobiology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2665945X23000207 |
| _version_ | 1827921450495901696 |
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| author | Devin H. Kehoe Lukas Schießer Hassaan Malik Mazyar Fallah |
| author_facet | Devin H. Kehoe Lukas Schießer Hassaan Malik Mazyar Fallah |
| author_sort | Devin H. Kehoe |
| collection | DOAJ |
| description | The mechanism that reweights oculomotor vectors based on visual features is unclear. However, the latency of oculomotor visual activations gives insight into their antecedent featural processing. We compared the oculomotor processing time course of grayscale, task-irrelevant static and motion distractors during target selection by continuously measuring a battery of human saccadic behavioral metrics as a function of time after distractor onset. The motion direction was towards or away from the target and the motion speed was fast or slow. We compared static and motion distractors and observed that both distractors elicited curved saccades and shifted endpoints at short latencies (∼25 ms). After 50 ms, saccade trajectory biasing elicited by motion distractors lagged static distractor trajectory biasing by 10 ms. There were no such latency differences between distractor motion directions or motion speeds. This pattern suggests that additional processing of motion stimuli occurred prior to the propagation of visual information into the oculomotor system. We examined the interaction of distractor processing time (DPT) with two additional factors: saccadic reaction time (SRT) and saccadic amplitude. Shorter SRTs were associated with shorter DPT latencies of biased saccade trajectories. Both SRT and saccadic amplitude were associated with the magnitude of saccade trajectory biases. |
| first_indexed | 2024-03-13T04:26:44Z |
| format | Article |
| id | doaj.art-4663c2a0f33046548caba90bdac08a2e |
| institution | Directory Open Access Journal |
| issn | 2665-945X |
| language | English |
| last_indexed | 2024-03-13T04:26:44Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Current Research in Neurobiology |
| spelling | doaj.art-4663c2a0f33046548caba90bdac08a2e2023-06-20T04:20:48ZengElsevierCurrent Research in Neurobiology2665-945X2023-01-014100092Motion distractors perturb saccade programming later in time than static distractorsDevin H. Kehoe0Lukas Schießer1Hassaan Malik2Mazyar Fallah3Department of Psychology, York University, Toronto, M3J 1P3, Canada; Centre for Vision Research, York University, Toronto, M3J 1P3, Canada; VISTA: Vision Science to Applications, York University, Toronto, M3J 1P3, Canada; Canadian Action and Perception Network, Canada; Corresponding author. York University Faculty of Health Behavioural Science Building Room 101, 4700 Keele St., Toronto, Ontario M3J 1P3, Canada.Institute of Cognitive Science, Universität Osnabrück, Osnabrück, 49074, GermanySchool of Kinesiology and Health Science, York University, Toronto, M3J 1P3, CanadaDepartment of Psychology, York University, Toronto, M3J 1P3, Canada; Centre for Vision Research, York University, Toronto, M3J 1P3, Canada; VISTA: Vision Science to Applications, York University, Toronto, M3J 1P3, Canada; Canadian Action and Perception Network, Canada; School of Kinesiology and Health Science, York University, Toronto, M3J 1P3, Canada; College of Biological Science, University of Guelph, Guelph, N1G 2W1, CanadaThe mechanism that reweights oculomotor vectors based on visual features is unclear. However, the latency of oculomotor visual activations gives insight into their antecedent featural processing. We compared the oculomotor processing time course of grayscale, task-irrelevant static and motion distractors during target selection by continuously measuring a battery of human saccadic behavioral metrics as a function of time after distractor onset. The motion direction was towards or away from the target and the motion speed was fast or slow. We compared static and motion distractors and observed that both distractors elicited curved saccades and shifted endpoints at short latencies (∼25 ms). After 50 ms, saccade trajectory biasing elicited by motion distractors lagged static distractor trajectory biasing by 10 ms. There were no such latency differences between distractor motion directions or motion speeds. This pattern suggests that additional processing of motion stimuli occurred prior to the propagation of visual information into the oculomotor system. We examined the interaction of distractor processing time (DPT) with two additional factors: saccadic reaction time (SRT) and saccadic amplitude. Shorter SRTs were associated with shorter DPT latencies of biased saccade trajectories. Both SRT and saccadic amplitude were associated with the magnitude of saccade trajectory biases.http://www.sciencedirect.com/science/article/pii/S2665945X23000207Behavioral chronometryEye movementsTarget selectionSensorimotor processingSaccade curvatureSaccade averaging |
| spellingShingle | Devin H. Kehoe Lukas Schießer Hassaan Malik Mazyar Fallah Motion distractors perturb saccade programming later in time than static distractors Current Research in Neurobiology Behavioral chronometry Eye movements Target selection Sensorimotor processing Saccade curvature Saccade averaging |
| title | Motion distractors perturb saccade programming later in time than static distractors |
| title_full | Motion distractors perturb saccade programming later in time than static distractors |
| title_fullStr | Motion distractors perturb saccade programming later in time than static distractors |
| title_full_unstemmed | Motion distractors perturb saccade programming later in time than static distractors |
| title_short | Motion distractors perturb saccade programming later in time than static distractors |
| title_sort | motion distractors perturb saccade programming later in time than static distractors |
| topic | Behavioral chronometry Eye movements Target selection Sensorimotor processing Saccade curvature Saccade averaging |
| url | http://www.sciencedirect.com/science/article/pii/S2665945X23000207 |
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