Bos, Jesse (2023) Hemianopia and Visual Scanning Behavior during Cycling. Bachelor thesis, Psychology.
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Abstract
Introduction. People with hemianopia find it difficult to participate in traffic such as during cycling. They can use compensatory scanning strategies to limit these difficulties. There might be differences in visual scanning behavior between people who experience hemianopia for the first time and people who have had hemianopia for longer. The aim of this study was to research how visual scanning behavior during cycling differs between people with hemianopia, people who experience hemianopia for the first time and people without hemianopia. We also compared these three groups on the safety of their cycling behavior. Method. To study this we set up a virtual reality experiment in which participants were asked to cycle through a virtual environment and brake in time for other road users. We compared people with hemianopia, people with unimpaired vision and people with simulated hemianopia (N = 12 for each group) on number of saccades per minute, mean saccadic amplitude, number of saccades per minute towards the blind hemi-field and time to collision. Results. No significant differences in scanning behavior were found between the three groups, although the hemianopia group and simulated hemianopia group contained more variance than the unimpaired vision group. A trend in the simulated hemianopia group indicated that they employed more cautious cycling behavior. Conclusion. People who experience hemianopia for the first time are more cautious during cycling. The lack of difference in scanning behavior could have been caused by the large variance within the groups or the lack of realism of the virtual reality environment. It could also be that less compensatory scanning is required during cycling than during other types of tasks. Compensatory training should take into account individual differences in hemianopia type and learning and should also focus on increasing confidence. Keywords: hemianopia, scanning behavior, cycling, virtual reality
| Item Type: | Thesis (Bachelor) |
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| Supervisor name: | Postuma, E.M.J.L. |
| Degree programme: | Psychology |
| Differentiation route: | None [Bachelor Psychology] |
| Date Deposited: | 08 Aug 2023 12:55 |
| Last Modified: | 08 Aug 2023 12:55 |
| URI: | http://gmwpublic.studenttheses.ub.rug.nl/id/eprint/2734 |
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