Saccadic momentum and facilitation of return saccades contribute to an optimal foraging strategy.
The interest in saccadic IOR is funneled by the hypothesis that it serves a clear functional purpose in the selection of fixation points: the facilitation of foraging. In this study, we arrive at a different interpretation of saccadic IOR. First, we find that return saccades are performed much more...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2013-01-01
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| Series: | PLoS Computational Biology |
| Online Access: | http://europepmc.org/articles/PMC3547797?pdf=render |
| _version_ | 1818700946963693568 |
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| author | Niklas Wilming Simon Harst Nico Schmidt Peter König |
| author_facet | Niklas Wilming Simon Harst Nico Schmidt Peter König |
| author_sort | Niklas Wilming |
| collection | DOAJ |
| description | The interest in saccadic IOR is funneled by the hypothesis that it serves a clear functional purpose in the selection of fixation points: the facilitation of foraging. In this study, we arrive at a different interpretation of saccadic IOR. First, we find that return saccades are performed much more often than expected from the statistical properties of saccades and saccade pairs. Second, we find that fixation durations before a saccade are modulated by the relative angle of the saccade, but return saccades show no sign of an additional temporal inhibition. Thus, we do not find temporal saccadic inhibition of return. Interestingly, we find that return locations are more salient, according to empirically measured saliency (locations that are fixated by many observers) as well as stimulus dependent saliency (defined by image features), than regular fixation locations. These results and the finding that return saccades increase the match of individual trajectories with a grand total priority map evidences the return saccades being part of a fixation selection strategy that trades off exploration and exploitation. |
| first_indexed | 2024-12-17T15:13:02Z |
| format | Article |
| id | doaj.art-a76e3fd1dcbb4a3aabe000b23d320c63 |
| institution | Directory Open Access Journal |
| issn | 1553-734X 1553-7358 |
| language | English |
| last_indexed | 2024-12-17T15:13:02Z |
| publishDate | 2013-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Computational Biology |
| spelling | doaj.art-a76e3fd1dcbb4a3aabe000b23d320c632022-12-21T21:43:37ZengPublic Library of Science (PLoS)PLoS Computational Biology1553-734X1553-73582013-01-0191e100287110.1371/journal.pcbi.1002871Saccadic momentum and facilitation of return saccades contribute to an optimal foraging strategy.Niklas WilmingSimon HarstNico SchmidtPeter KönigThe interest in saccadic IOR is funneled by the hypothesis that it serves a clear functional purpose in the selection of fixation points: the facilitation of foraging. In this study, we arrive at a different interpretation of saccadic IOR. First, we find that return saccades are performed much more often than expected from the statistical properties of saccades and saccade pairs. Second, we find that fixation durations before a saccade are modulated by the relative angle of the saccade, but return saccades show no sign of an additional temporal inhibition. Thus, we do not find temporal saccadic inhibition of return. Interestingly, we find that return locations are more salient, according to empirically measured saliency (locations that are fixated by many observers) as well as stimulus dependent saliency (defined by image features), than regular fixation locations. These results and the finding that return saccades increase the match of individual trajectories with a grand total priority map evidences the return saccades being part of a fixation selection strategy that trades off exploration and exploitation.http://europepmc.org/articles/PMC3547797?pdf=render |
| spellingShingle | Niklas Wilming Simon Harst Nico Schmidt Peter König Saccadic momentum and facilitation of return saccades contribute to an optimal foraging strategy. PLoS Computational Biology |
| title | Saccadic momentum and facilitation of return saccades contribute to an optimal foraging strategy. |
| title_full | Saccadic momentum and facilitation of return saccades contribute to an optimal foraging strategy. |
| title_fullStr | Saccadic momentum and facilitation of return saccades contribute to an optimal foraging strategy. |
| title_full_unstemmed | Saccadic momentum and facilitation of return saccades contribute to an optimal foraging strategy. |
| title_short | Saccadic momentum and facilitation of return saccades contribute to an optimal foraging strategy. |
| title_sort | saccadic momentum and facilitation of return saccades contribute to an optimal foraging strategy |
| url | http://europepmc.org/articles/PMC3547797?pdf=render |
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