Building a decoder of perceptual decisions from microsaccades and pupil size
Many studies have reported neural correlates of visual awareness across several brain regions, including the sensory, parietal, and frontal areas. In most of these studies, participants were instructed to explicitly report their perceptual experience through a button press or verbal report. It is co...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-09-01
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| Series: | Frontiers in Psychology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpsyg.2022.942859/full |
| _version_ | 1828147959627251712 |
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| author | Ryohei Nakayama Ryohei Nakayama Jean-Baptiste Bardin Jean-Baptiste Bardin Ai Koizumi Ai Koizumi Isamu Motoyoshi Kaoru Amano Kaoru Amano |
| author_facet | Ryohei Nakayama Ryohei Nakayama Jean-Baptiste Bardin Jean-Baptiste Bardin Ai Koizumi Ai Koizumi Isamu Motoyoshi Kaoru Amano Kaoru Amano |
| author_sort | Ryohei Nakayama |
| collection | DOAJ |
| description | Many studies have reported neural correlates of visual awareness across several brain regions, including the sensory, parietal, and frontal areas. In most of these studies, participants were instructed to explicitly report their perceptual experience through a button press or verbal report. It is conceivable, however, that explicit reporting itself may trigger specific neural responses that can confound the direct examination of the neural correlates of visual awareness. This suggests the need to assess visual awareness without explicit reporting. One way to achieve this is to develop a technique to predict the visual awareness of participants based on their peripheral responses. Here, we used eye movements and pupil sizes to decode trial-by-trial changes in the awareness of a stimulus whose visibility was deteriorated due to adaptation-induced blindness (AIB). In the experiment, participants judged whether they perceived a target stimulus and rated the confidence they had in their perceptual judgment, while their eye movements and pupil sizes were recorded. We found that not only perceptual decision but also perceptual confidence can be separately decoded from the eye movement and pupil size. We discuss the potential of this technique with regard to assessing visual awareness in future neuroimaging experiments. |
| first_indexed | 2024-04-11T21:08:00Z |
| format | Article |
| id | doaj.art-8848665bb8c34490983f2f9ccc8cfbb5 |
| institution | Directory Open Access Journal |
| issn | 1664-1078 |
| language | English |
| last_indexed | 2024-04-11T21:08:00Z |
| publishDate | 2022-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Psychology |
| spelling | doaj.art-8848665bb8c34490983f2f9ccc8cfbb52022-12-22T04:03:11ZengFrontiers Media S.A.Frontiers in Psychology1664-10782022-09-011310.3389/fpsyg.2022.942859942859Building a decoder of perceptual decisions from microsaccades and pupil sizeRyohei Nakayama0Ryohei Nakayama1Jean-Baptiste Bardin2Jean-Baptiste Bardin3Ai Koizumi4Ai Koizumi5Isamu Motoyoshi6Kaoru Amano7Kaoru Amano8Department of Psychology, The University of Tokyo, Tokyo, JapanCenter for Information and Neural Networks (CiNet), National Institute of Information and Communications Technology, Osaka, JapanCenter for Information and Neural Networks (CiNet), National Institute of Information and Communications Technology, Osaka, JapanÉcole Polytechnique Fédérale de Lausanne, Lausanne, SwitzerlandCenter for Information and Neural Networks (CiNet), National Institute of Information and Communications Technology, Osaka, JapanSony Computer Science Laboratories, Inc., Tokyo, JapanDepartment of Life Sciences, The University of Tokyo, Tokyo, JapanCenter for Information and Neural Networks (CiNet), National Institute of Information and Communications Technology, Osaka, JapanGraduate School of Information Science and Technology, The University of Tokyo, Tokyo, JapanMany studies have reported neural correlates of visual awareness across several brain regions, including the sensory, parietal, and frontal areas. In most of these studies, participants were instructed to explicitly report their perceptual experience through a button press or verbal report. It is conceivable, however, that explicit reporting itself may trigger specific neural responses that can confound the direct examination of the neural correlates of visual awareness. This suggests the need to assess visual awareness without explicit reporting. One way to achieve this is to develop a technique to predict the visual awareness of participants based on their peripheral responses. Here, we used eye movements and pupil sizes to decode trial-by-trial changes in the awareness of a stimulus whose visibility was deteriorated due to adaptation-induced blindness (AIB). In the experiment, participants judged whether they perceived a target stimulus and rated the confidence they had in their perceptual judgment, while their eye movements and pupil sizes were recorded. We found that not only perceptual decision but also perceptual confidence can be separately decoded from the eye movement and pupil size. We discuss the potential of this technique with regard to assessing visual awareness in future neuroimaging experiments.https://www.frontiersin.org/articles/10.3389/fpsyg.2022.942859/fullvisual awarenessadaptation-induced blindnessclassifiermicrosaccadepupil size |
| spellingShingle | Ryohei Nakayama Ryohei Nakayama Jean-Baptiste Bardin Jean-Baptiste Bardin Ai Koizumi Ai Koizumi Isamu Motoyoshi Kaoru Amano Kaoru Amano Building a decoder of perceptual decisions from microsaccades and pupil size Frontiers in Psychology visual awareness adaptation-induced blindness classifier microsaccade pupil size |
| title | Building a decoder of perceptual decisions from microsaccades and pupil size |
| title_full | Building a decoder of perceptual decisions from microsaccades and pupil size |
| title_fullStr | Building a decoder of perceptual decisions from microsaccades and pupil size |
| title_full_unstemmed | Building a decoder of perceptual decisions from microsaccades and pupil size |
| title_short | Building a decoder of perceptual decisions from microsaccades and pupil size |
| title_sort | building a decoder of perceptual decisions from microsaccades and pupil size |
| topic | visual awareness adaptation-induced blindness classifier microsaccade pupil size |
| url | https://www.frontiersin.org/articles/10.3389/fpsyg.2022.942859/full |
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