Effects of visual blur on microsaccades during visual exploration
Microsaccades shift the image on the fovea and counteract visual fading. They also serve as an optimal sampling strategy while viewing complex visual scenes. Microsaccade production relies on the amount of retinal error or acuity demand of a visual task. The goal of this study was to assess the effe...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Bern Open Publishing
2019-08-01
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| Series: | Journal of Eye Movement Research |
| Subjects: | |
| Online Access: | https://bop.unibe.ch/JEMR/article/view/4369 |
| _version_ | 1818764931142516736 |
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| author | Sherry Tang Peggy Skelly Jorge Otero-Millan Jonathan Jacobs Jordan Murray Aasef G. Shaikh Fatema F. Ghasia |
| author_facet | Sherry Tang Peggy Skelly Jorge Otero-Millan Jonathan Jacobs Jordan Murray Aasef G. Shaikh Fatema F. Ghasia |
| author_sort | Sherry Tang |
| collection | DOAJ |
| description | Microsaccades shift the image on the fovea and counteract visual fading. They also serve as an optimal sampling strategy while viewing complex visual scenes. Microsaccade production relies on the amount of retinal error or acuity demand of a visual task. The goal of this study was to assess the effects of blur induced by uncorrected refractive error on visual search. Eye movements were recorded in fourteen healthy subjects with uncorrected and corrected refractive error while they performed a) visual fixation b) blank-scene viewing c) visual search (spot the difference) tasks. Microsaccades, saccades, correctly identified differences and reaction times were analyzed. The frequency of microsaccades and correctly identified differences were lower in the uncorrected refractive error during visual search. No similar change in microsaccades was seen during blank-scene viewing and gaze holding tasks. These findings suggest that visual blur, hence the precision of an image on the fovea, has an important role in calibrating the amplitude of microsaccades during visual scanning. |
| first_indexed | 2024-12-18T08:10:02Z |
| format | Article |
| id | doaj.art-3799dc4b204e4b3aa4ea93b33d490176 |
| institution | Directory Open Access Journal |
| issn | 1995-8692 |
| language | English |
| last_indexed | 2024-12-18T08:10:02Z |
| publishDate | 2019-08-01 |
| publisher | Bern Open Publishing |
| record_format | Article |
| series | Journal of Eye Movement Research |
| spelling | doaj.art-3799dc4b204e4b3aa4ea93b33d4901762022-12-21T21:14:55ZengBern Open PublishingJournal of Eye Movement Research1995-86922019-08-0112610.16910/jemr.12.6.10Effects of visual blur on microsaccades during visual explorationSherry Tang0Peggy Skelly1Jorge Otero-Millan2Jonathan Jacobs3Jordan Murray4Aasef G. Shaikh5Fatema F. Ghasia6Case Western Reserve University School of MedicineDaroff-Dell’Osso Ocular Motility Laboratory, Louis Stokes Cleveland VA Medical Center, Case Western Reserve University School of Medicine, USAVestibular and Ocular Motor Research Laboratory, Johns Hopkins UniversityDaroff-Dell’Osso Ocular Motility Laboratory, Louis Stokes Cleveland VA Medical Center, Case Western Reserve University School of Medicine, USAVision Neurosciences and Ocular Motility Lab, Cole Eye Institute, Cleveland Clinic, USADaroff-Dell’Osso Ocular Motility Laboratory, Louis Stokes Cleveland VA Medical Center; Case Western Reserve University School of MedicineCole Eye Institute, Cleveland ClinicMicrosaccades shift the image on the fovea and counteract visual fading. They also serve as an optimal sampling strategy while viewing complex visual scenes. Microsaccade production relies on the amount of retinal error or acuity demand of a visual task. The goal of this study was to assess the effects of blur induced by uncorrected refractive error on visual search. Eye movements were recorded in fourteen healthy subjects with uncorrected and corrected refractive error while they performed a) visual fixation b) blank-scene viewing c) visual search (spot the difference) tasks. Microsaccades, saccades, correctly identified differences and reaction times were analyzed. The frequency of microsaccades and correctly identified differences were lower in the uncorrected refractive error during visual search. No similar change in microsaccades was seen during blank-scene viewing and gaze holding tasks. These findings suggest that visual blur, hence the precision of an image on the fovea, has an important role in calibrating the amplitude of microsaccades during visual scanning.https://bop.unibe.ch/JEMR/article/view/4369visual acuityeye movementsaccadesgazemicrosaccadesblur |
| spellingShingle | Sherry Tang Peggy Skelly Jorge Otero-Millan Jonathan Jacobs Jordan Murray Aasef G. Shaikh Fatema F. Ghasia Effects of visual blur on microsaccades during visual exploration Journal of Eye Movement Research visual acuity eye movement saccades gaze microsaccades blur |
| title | Effects of visual blur on microsaccades during visual exploration |
| title_full | Effects of visual blur on microsaccades during visual exploration |
| title_fullStr | Effects of visual blur on microsaccades during visual exploration |
| title_full_unstemmed | Effects of visual blur on microsaccades during visual exploration |
| title_short | Effects of visual blur on microsaccades during visual exploration |
| title_sort | effects of visual blur on microsaccades during visual exploration |
| topic | visual acuity eye movement saccades gaze microsaccades blur |
| url | https://bop.unibe.ch/JEMR/article/view/4369 |
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