Fixation disparity during reading: Fusion, not suppression
In this paper I present a brief review of some recent studies my colleagues and I have carried out to investigate binocular coordination during reading. These studies demonstrate that the eyes are often not perfectly aligned during reading, with fixation disparities of approximately one character on...
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| Format: | Article |
| Language: | English |
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MDPI AG
2008-12-01
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| Series: | Journal of Eye Movement Research |
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| Online Access: | https://bop.unibe.ch/JEMR/article/view/2270 |
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| _version_ | 1850164129687404544 |
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| author | Simon P. Liversedge |
| author_facet | Simon P. Liversedge |
| author_sort | Simon P. Liversedge |
| collection | DOAJ |
| description | In this paper I present a brief review of some recent studies my colleagues and I have carried out to investigate binocular coordination during reading. These studies demonstrate that the eyes are often not perfectly aligned during reading, with fixation disparities of approximately one character on average. Both crossed and uncrossed disparities are common and vergence movements during fixations serve to reduce, but not eliminate disparity. Fixation disparity results in different retinal inputs from each eye, yet a single non diplopic visual representation of the text is perceived when we read. A further experiment, with dichoptically presented target words in normally presented sentence frames, showed that a mechanism of fusion rather than suppression operates at an early stage during visual processing. Saccade metrics appear to be computed according to a unified visual representation based on input from both eyes. based on input from both eyes. |
| format | Article |
| id | doaj-art-efca9fe3b11944a0b5ef4a1ea17f5531 |
| institution | OA Journals |
| issn | 1995-8692 |
| language | English |
| publishDate | 2008-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Eye Movement Research |
| spelling | doaj-art-efca9fe3b11944a0b5ef4a1ea17f55312025-08-20T02:22:04ZengMDPI AGJournal of Eye Movement Research1995-86922008-12-012310.16910/jemr.2.3.5Fixation disparity during reading: Fusion, not suppressionSimon P. Liversedge0University of SouthamptonIn this paper I present a brief review of some recent studies my colleagues and I have carried out to investigate binocular coordination during reading. These studies demonstrate that the eyes are often not perfectly aligned during reading, with fixation disparities of approximately one character on average. Both crossed and uncrossed disparities are common and vergence movements during fixations serve to reduce, but not eliminate disparity. Fixation disparity results in different retinal inputs from each eye, yet a single non diplopic visual representation of the text is perceived when we read. A further experiment, with dichoptically presented target words in normally presented sentence frames, showed that a mechanism of fusion rather than suppression operates at an early stage during visual processing. Saccade metrics appear to be computed according to a unified visual representation based on input from both eyes. based on input from both eyes.https://bop.unibe.ch/JEMR/article/view/2270binocular coordinationdisparityfusionsuppression |
| spellingShingle | Simon P. Liversedge Fixation disparity during reading: Fusion, not suppression Journal of Eye Movement Research binocular coordination disparity fusion suppression |
| title | Fixation disparity during reading: Fusion, not suppression |
| title_full | Fixation disparity during reading: Fusion, not suppression |
| title_fullStr | Fixation disparity during reading: Fusion, not suppression |
| title_full_unstemmed | Fixation disparity during reading: Fusion, not suppression |
| title_short | Fixation disparity during reading: Fusion, not suppression |
| title_sort | fixation disparity during reading fusion not suppression |
| topic | binocular coordination disparity fusion suppression |
| url | https://bop.unibe.ch/JEMR/article/view/2270 |
| work_keys_str_mv | AT simonpliversedge fixationdisparityduringreadingfusionnotsuppression |