Journal of vision | |
Transsaccadic transfer of distortion adaptation in a natural environment | |
Siegfried Wahl1  Selam W. Habtegiorgis1  Katharina Rifai1  | |
[1] Institute for Ophthalmic Research, University of Tübingen, Tübingen, Germany | |
关键词: saccades; transfer technique; perceptual aftereffect; eye movement; | |
DOI : 10.1167/18.1.13 | |
学科分类:眼科学 | |
来源: Association for Research in Vision and Ophthalmology | |
【 摘 要 】
Spatially varying distortions in optical elementsâfor instance prisms and progressive power lensesâmodulate the visual world disparately in different visual areas. Saccadic eye movements in such a complexly distorted environment thereby continuously alter the retinal location of the distortions. Yet the visual system achieves perceptual constancy by compensating for distortions irrespective of their retinal relocations at different fixations. Here, we assessed whether the visual system retains its plasticity to distortions across saccades to attain stability. Specifically, we tapped into reference frames of geometric skew-adaptation aftereffects to evaluate the transfer of retinotopic and spatiotopic distortion information across saccades. Adaptation to skew distortion of natural-image content was tested at retinotopic and spatiotopic locations after a saccade was executed between adaptation and test phases. The skew-adaptation information was partially transferred to a new fixation after a saccade. Significant adaptation aftereffects were obtained at both retinotopic and spatiotopic locations. Conceivably, spatiotopic information was used to counterbalance the saccadic retinal shifts of the distortions. Therefore, distortion processing in a natural visual world does not start anew at each fixation; rather, retinotopic and spatiotopic skew information acquired at previous fixations are preserved to mediate stable perception during eye movements.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201902192171425ZK.pdf | 485KB | download |