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The role of eye movements in a contour detection task
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| Veröffentlicht in: | Journal of vision 13(2013), 14 |
|---|---|
| Personen und Körperschaften: | , , , , |
| Titel: | The role of eye movements in a contour detection task/ Nathalie Van Humbeeck; Nadine Schmitt; Frouke Hermens; Johan Wagemans; Udo A. Ernst |
| Format: | E-Book-Kapitel |
| Sprache: | Englisch |
| veröffentlicht: |
2013
|
| Gesamtaufnahme: |
: Journal of vision, 13(2013), 14
, volume:13 |
| Quelle: | Verbunddaten SWB Lizenzfreie Online-Ressourcen |
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| 100 | 1 | |a Humbeeck, Nathalie |e VerfasserIn |4 aut | |
| 245 | 1 | 4 | |a The role of eye movements in a contour detection task |c Nathalie Van Humbeeck; Nadine Schmitt; Frouke Hermens; Johan Wagemans; Udo A. Ernst |
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| 520 | |a Vision combines local feature integration with active viewing processes, such as eye movements, to perceive complex visual scenes. However, it is still unclear how these processes interact and support each other. Here, we investigated how the dynamics of saccadic eye movements interact with contour integration, focusing on situations in which contours are difficult to find or even absent. We recorded observers' eye movements while they searched for a contour embedded in a background of randomly oriented elements. Task difficulty was manipulated by varying the contour's path angle. An association field model of contour integration was employed to predict potential saccade targets by identifying stimulus locations with high contour salience. We found that the number and duration of fixations increased with the increasing path angle of the contour. In addition, fixation duration increased over the course of a trial, and the time course of saccade amplitude depended on the percept of observers. Model fitting revealed that saccades fully compensate for the reduced saliency of peripheral contour targets. Importantly, our model predicted fixation locations to a considerable degree, indicating that observers fixated collinear elements. These results show that contour integration actively guides eye movements and determines their spatial and temporal parameters. | ||
| 700 | 1 | |a Schmitt, Nadine |e VerfasserIn |4 aut | |
| 700 | 1 | |a Hermens, Frouke |e VerfasserIn |4 aut | |
| 700 | 1 | |a Wagemans, Johan |e VerfasserIn |4 aut | |
| 700 | 1 | |a Ernst, Udo A. |e VerfasserIn |4 aut | |
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| author | Humbeeck, Nathalie, Schmitt, Nadine, Hermens, Frouke, Wagemans, Johan, Ernst, Udo A. |
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| contents | Vision combines local feature integration with active viewing processes, such as eye movements, to perceive complex visual scenes. However, it is still unclear how these processes interact and support each other. Here, we investigated how the dynamics of saccadic eye movements interact with contour integration, focusing on situations in which contours are difficult to find or even absent. We recorded observers' eye movements while they searched for a contour embedded in a background of randomly oriented elements. Task difficulty was manipulated by varying the contour's path angle. An association field model of contour integration was employed to predict potential saccade targets by identifying stimulus locations with high contour salience. We found that the number and duration of fixations increased with the increasing path angle of the contour. In addition, fixation duration increased over the course of a trial, and the time course of saccade amplitude depended on the percept of observers. Model fitting revealed that saccades fully compensate for the reduced saliency of peripheral contour targets. Importantly, our model predicted fixation locations to a considerable degree, indicating that observers fixated collinear elements. These results show that contour integration actively guides eye movements and determines their spatial and temporal parameters. |
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| spelling | Humbeeck, Nathalie VerfasserIn aut, The role of eye movements in a contour detection task Nathalie Van Humbeeck; Nadine Schmitt; Frouke Hermens; Johan Wagemans; Udo A. Ernst, 2013, Text txt rdacontent, Computermedien c rdamedia, Online-Ressource cr rdacarrier, Vision combines local feature integration with active viewing processes, such as eye movements, to perceive complex visual scenes. However, it is still unclear how these processes interact and support each other. Here, we investigated how the dynamics of saccadic eye movements interact with contour integration, focusing on situations in which contours are difficult to find or even absent. We recorded observers' eye movements while they searched for a contour embedded in a background of randomly oriented elements. Task difficulty was manipulated by varying the contour's path angle. An association field model of contour integration was employed to predict potential saccade targets by identifying stimulus locations with high contour salience. We found that the number and duration of fixations increased with the increasing path angle of the contour. In addition, fixation duration increased over the course of a trial, and the time course of saccade amplitude depended on the percept of observers. Model fitting revealed that saccades fully compensate for the reduced saliency of peripheral contour targets. Importantly, our model predicted fixation locations to a considerable degree, indicating that observers fixated collinear elements. These results show that contour integration actively guides eye movements and determines their spatial and temporal parameters., Schmitt, Nadine VerfasserIn aut, Hermens, Frouke VerfasserIn aut, Wagemans, Johan VerfasserIn aut, Ernst, Udo A. VerfasserIn aut, Enthalten in Journal of vision Rockville, Md. : ARVO, 2001 13(2013), 14 Online-Ressource (DE-627)363755667 (DE-600)2106064-2 (DE-576)281223025 1534-7362 nnns, volume:13 year:2013 number:14, https://doi.org/10.1167/13.14.5 Resolving-System kostenfrei, https://doi.org/10.1167/13.14.5 LFER, LFER 2020-02-03T00:00:00Z |
| spellingShingle | Humbeeck, Nathalie, Schmitt, Nadine, Hermens, Frouke, Wagemans, Johan, Ernst, Udo A., The role of eye movements in a contour detection task, Vision combines local feature integration with active viewing processes, such as eye movements, to perceive complex visual scenes. However, it is still unclear how these processes interact and support each other. Here, we investigated how the dynamics of saccadic eye movements interact with contour integration, focusing on situations in which contours are difficult to find or even absent. We recorded observers' eye movements while they searched for a contour embedded in a background of randomly oriented elements. Task difficulty was manipulated by varying the contour's path angle. An association field model of contour integration was employed to predict potential saccade targets by identifying stimulus locations with high contour salience. We found that the number and duration of fixations increased with the increasing path angle of the contour. In addition, fixation duration increased over the course of a trial, and the time course of saccade amplitude depended on the percept of observers. Model fitting revealed that saccades fully compensate for the reduced saliency of peripheral contour targets. Importantly, our model predicted fixation locations to a considerable degree, indicating that observers fixated collinear elements. These results show that contour integration actively guides eye movements and determines their spatial and temporal parameters. |
| title | The role of eye movements in a contour detection task |
| title_auth | The role of eye movements in a contour detection task |
| title_full | The role of eye movements in a contour detection task Nathalie Van Humbeeck; Nadine Schmitt; Frouke Hermens; Johan Wagemans; Udo A. Ernst |
| title_fullStr | The role of eye movements in a contour detection task Nathalie Van Humbeeck; Nadine Schmitt; Frouke Hermens; Johan Wagemans; Udo A. Ernst |
| title_full_unstemmed | The role of eye movements in a contour detection task Nathalie Van Humbeeck; Nadine Schmitt; Frouke Hermens; Johan Wagemans; Udo A. Ernst |
| title_in_hierarchy | The role of eye movements in a contour detection task / Nathalie Van Humbeeck; Nadine Schmitt; Frouke Hermens; Johan Wagemans; Udo A. Ernst, |
| title_short | The role of eye movements in a contour detection task |
| title_sort | role of eye movements in a contour detection task |
| url | https://doi.org/10.1167/13.14.5 |