Robust sampling of decision information during perceptual choice.
Humans move their eyes to gather information about the visual world. However, saccadic sampling has largely been explored in paradigms that involve searching for a lone target in a cluttered array or natural scene. Here, we investigated the policy that humans use to overtly sample information in a p...
| Main Authors: | , , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
National Academy of Sciences
2017
|
| _version_ | 1797053807878733824 |
|---|---|
| author | Vandormael, H Herce Castañón, S Balaguer, J Li, V Summerfield, C |
| author_facet | Vandormael, H Herce Castañón, S Balaguer, J Li, V Summerfield, C |
| author_sort | Vandormael, H |
| collection | OXFORD |
| description | Humans move their eyes to gather information about the visual world. However, saccadic sampling has largely been explored in paradigms that involve searching for a lone target in a cluttered array or natural scene. Here, we investigated the policy that humans use to overtly sample information in a perceptual decision task that required information from across multiple spatial locations to be combined. Participants viewed a spatial array of numbers and judged whether the average was greater or smaller than a reference value. Participants preferentially sampled items that were less diagnostic of the correct answer (“inlying” elements; that is, elements closer to the reference value). This preference to sample inlying items was linked to decisions, enhancing the tendency to give more weight to inlying elements in the final choice (“robust averaging”). These findings contrast with a large body of evidence indicating that gaze is directed preferentially to deviant information during natural scene viewing and visual search, and suggest that humans may sample information “robustly” with their eyes during perceptual decision-making. |
| first_indexed | 2024-03-06T18:48:45Z |
| format | Journal article |
| id | oxford-uuid:0f741cee-9dab-4db6-85a5-09882b6a45af |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:48:45Z |
| publishDate | 2017 |
| publisher | National Academy of Sciences |
| record_format | dspace |
| spelling | oxford-uuid:0f741cee-9dab-4db6-85a5-09882b6a45af2022-03-26T09:51:16ZRobust sampling of decision information during perceptual choice.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0f741cee-9dab-4db6-85a5-09882b6a45afEnglishSymplectic Elements at OxfordNational Academy of Sciences2017Vandormael, HHerce Castañón, SBalaguer, JLi, VSummerfield, CHumans move their eyes to gather information about the visual world. However, saccadic sampling has largely been explored in paradigms that involve searching for a lone target in a cluttered array or natural scene. Here, we investigated the policy that humans use to overtly sample information in a perceptual decision task that required information from across multiple spatial locations to be combined. Participants viewed a spatial array of numbers and judged whether the average was greater or smaller than a reference value. Participants preferentially sampled items that were less diagnostic of the correct answer (“inlying” elements; that is, elements closer to the reference value). This preference to sample inlying items was linked to decisions, enhancing the tendency to give more weight to inlying elements in the final choice (“robust averaging”). These findings contrast with a large body of evidence indicating that gaze is directed preferentially to deviant information during natural scene viewing and visual search, and suggest that humans may sample information “robustly” with their eyes during perceptual decision-making. |
| spellingShingle | Vandormael, H Herce Castañón, S Balaguer, J Li, V Summerfield, C Robust sampling of decision information during perceptual choice. |
| title | Robust sampling of decision information during perceptual choice. |
| title_full | Robust sampling of decision information during perceptual choice. |
| title_fullStr | Robust sampling of decision information during perceptual choice. |
| title_full_unstemmed | Robust sampling of decision information during perceptual choice. |
| title_short | Robust sampling of decision information during perceptual choice. |
| title_sort | robust sampling of decision information during perceptual choice |
| work_keys_str_mv | AT vandormaelh robustsamplingofdecisioninformationduringperceptualchoice AT hercecastanons robustsamplingofdecisioninformationduringperceptualchoice AT balaguerj robustsamplingofdecisioninformationduringperceptualchoice AT liv robustsamplingofdecisioninformationduringperceptualchoice AT summerfieldc robustsamplingofdecisioninformationduringperceptualchoice |