Customizing spatial remapping of letters to aid reading in the presence of a simulated central field loss.
Customizing spatial remapping of letters to aid reading in the presence of a simulated central field loss.
复制标题
定制字母的空间重新映射，以帮助在存在模拟中心场丢失的情况下阅读。
DOI：
10.1167/jov.24.4.17
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发表时间：
2024
影响因子：
1.8
通讯作者：
Engel,StephenA
中科院分区：
文献类型：
--
作者：
Flowers,ColinS;Legge,GordonE;Engel,StephenA
阅读是中央视野丧失(CFL)患者最关心的问题，因为它通常是在中心凹视力下进行的。空间重新映射为帮助阅读提供了一种潜在的途径；它需要将遮挡的字母转移到视觉具有功能的视网膜区域。在这里，我们介绍了一种创建和测试不同重新映射策略的方法-重新映射文本的方法-为不同形状的CFL定制的方法。通过在典型视力个体中模拟CFL，我们检验了定制假说--不同重新映射策略的好处将取决于CFL的属性。也就是说，在存在不同形状的CFL的情况下，重新映射策略将有助于区别阅读。在实验1中，研究了在中央视觉及其周围存在不同形状的CFL的情况下的字母识别。在实验2中，使用这些字母识别“映射”创建了不同的空间重新映射，并使用单词识别任务进行了测试。结果表明，水平间隙重映射没有垂直映射任何字母，获得了最好的单词识别。结果也与定制假设一致；不同的重新映射对单词识别的好处取决于不同的CFL形状。尽管水平间隙重新映射导致了非常好的单词识别，但根据患者CFL的形状定制重新映射策略可能有助于阅读CFL患者遇到的各种大小和形状。
Reading is a primary concern of patients with central field loss (CFL) because it is typically performed with foveal vision. Spatial remapping offers one potential avenue to aid in reading; it entails shifting occluded letters to retinal areas where vision is functional. Here, we introduce a method of creating and testing different remapping strategies—ways to remap text—customized for CFL of different shapes. By simulating CFL in typically-sighted individuals, we tested the customization hypothesis—that the benefits of different remapping strategies will depend on the properties of the CFL. That is, remapping strategies will aid reading differentially in the presence of differently shaped CFL. In Experiment 1, letter recognition in the presence of differently shaped CFL was assessed in and around central vision. Using these letter recognition “maps” different spatial remappings were created and tested in Experiment 2 using a word recognition task. Results showed that the horizontal gap remapping, which did not remap any letters vertically, resulted in the best word recognition. Results were also consistent with the customization hypothesis; the benefits of different remappings on word recognition depended on the different CFL shapes. Although the horizontal gap remapping resulted in very good word recognition, tailoring remapping strategies to the shape of patients’ CFL may aid reading with the wide range of sizes and shapes encountered by patients with CFL.