Very slow search and reach: failure to maximize expected gain in an eye-hand coordination task.
We examined an eye-hand coordination task where optimal visual search and hand movement strategies were inter-related. Observers were asked to find and touch a target among five distractors on a touch screen. Their reward for touching the target was reduced by an amount proportional to how long they...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2012-01-01
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| Series: | PLoS Computational Biology |
| Online Access: | http://europepmc.org/articles/PMC3469464?pdf=render |
| _version_ | 1811268288272924672 |
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| author | Hang Zhang Camille Morvan Louis-Alexandre Etezad-Heydari Laurence T Maloney |
| author_facet | Hang Zhang Camille Morvan Louis-Alexandre Etezad-Heydari Laurence T Maloney |
| author_sort | Hang Zhang |
| collection | DOAJ |
| description | We examined an eye-hand coordination task where optimal visual search and hand movement strategies were inter-related. Observers were asked to find and touch a target among five distractors on a touch screen. Their reward for touching the target was reduced by an amount proportional to how long they took to locate and reach to it. Coordinating the eye and the hand appropriately would markedly reduce the search-reach time. Using statistical decision theory we derived the sequence of interrelated eye and hand movements that would maximize expected gain and we predicted how hand movements should change as the eye gathered further information about target location. We recorded human observers' eye movements and hand movements and compared them with the optimal strategy that would have maximized expected gain. We found that most observers failed to adopt the optimal search-reach strategy. We analyze and describe the strategies they did adopt. |
| first_indexed | 2024-04-12T21:20:15Z |
| format | Article |
| id | doaj.art-47a6203575a4414da05cdda5652ab527 |
| institution | Directory Open Access Journal |
| issn | 1553-734X 1553-7358 |
| language | English |
| last_indexed | 2024-04-12T21:20:15Z |
| publishDate | 2012-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Computational Biology |
| spelling | doaj.art-47a6203575a4414da05cdda5652ab5272022-12-22T03:16:20ZengPublic Library of Science (PLoS)PLoS Computational Biology1553-734X1553-73582012-01-01810e100271810.1371/journal.pcbi.1002718Very slow search and reach: failure to maximize expected gain in an eye-hand coordination task.Hang ZhangCamille MorvanLouis-Alexandre Etezad-HeydariLaurence T MaloneyWe examined an eye-hand coordination task where optimal visual search and hand movement strategies were inter-related. Observers were asked to find and touch a target among five distractors on a touch screen. Their reward for touching the target was reduced by an amount proportional to how long they took to locate and reach to it. Coordinating the eye and the hand appropriately would markedly reduce the search-reach time. Using statistical decision theory we derived the sequence of interrelated eye and hand movements that would maximize expected gain and we predicted how hand movements should change as the eye gathered further information about target location. We recorded human observers' eye movements and hand movements and compared them with the optimal strategy that would have maximized expected gain. We found that most observers failed to adopt the optimal search-reach strategy. We analyze and describe the strategies they did adopt.http://europepmc.org/articles/PMC3469464?pdf=render |
| spellingShingle | Hang Zhang Camille Morvan Louis-Alexandre Etezad-Heydari Laurence T Maloney Very slow search and reach: failure to maximize expected gain in an eye-hand coordination task. PLoS Computational Biology |
| title | Very slow search and reach: failure to maximize expected gain in an eye-hand coordination task. |
| title_full | Very slow search and reach: failure to maximize expected gain in an eye-hand coordination task. |
| title_fullStr | Very slow search and reach: failure to maximize expected gain in an eye-hand coordination task. |
| title_full_unstemmed | Very slow search and reach: failure to maximize expected gain in an eye-hand coordination task. |
| title_short | Very slow search and reach: failure to maximize expected gain in an eye-hand coordination task. |
| title_sort | very slow search and reach failure to maximize expected gain in an eye hand coordination task |
| url | http://europepmc.org/articles/PMC3469464?pdf=render |
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