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首页> 美国卫生研究院文献>Micromachines >Updated Tactile Feedback with a Pin Array Matrix Helps Blind People to Reduce Self-Location Errors
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Updated Tactile Feedback with a Pin Array Matrix Helps Blind People to Reduce Self-Location Errors

机译：带引脚阵列矩阵的更新式触觉反馈有助于盲人减少自我定位错误

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Autonomous navigation in novel environments still represents a challenge for people with visual impairment (VI). Pin array matrices (PAM) are an effective way to display spatial information to VI people in educative/rehabilitative contexts, as they provide high flexibility and versatility. Here, we tested the effectiveness of a PAM in VI participants in an orientation and mobility task. They haptically explored a map showing a scaled representation of a real room on the PAM. The map further included a symbol indicating a virtual target position. Then, participants entered the room and attempted to reach the target three times. While a control group only reviewed the same, unchanged map on the PAM between trials, an experimental group also received an updated map representing, in addition, the position they previously reached in the room. The experimental group significantly improved across trials by having both reduced self-location errors and reduced completion time, unlike the control group. We found that learning spatial layouts through updated tactile feedback on programmable displays outperforms conventional procedures on static tactile maps. This could represent a powerful tool for navigation, both in rehabilitation and everyday life contexts, improving spatial abilities and promoting independent living for VI people.
机译：在新型环境中的自主导航仍然是视障人士的一项挑战。引脚阵列矩阵（PAM）是一种在教育/康复环境中向VI人显示空间信息的有效方法，因为它们具有很高的灵活性和多功能性。在这里，我们在定向和移动任务中测试了VI参与者中PAM的有效性。他们从触觉上探索了一张地图，显示了PAM上真实房间的比例表示。该地图还包括指示虚拟目标位置的符号。然后，参与者进入房间并尝试达到目标三倍。对照组之间仅检查了两次试验之间PAM上相同，不变的地图，而实验组还收到了更新的地图，这些地图另外还代表了他们先前在房间中所达到的位置。与对照组不同，实验组通过减少自我定位错误和缩短完成时间而显着改善了整个试验。我们发现通过在可编程显示器上更新触觉反馈来学习空间布局要优于静态触觉地图上的常规过程。这可能是在康复和日常生活环境中导航，增强空间能力和促进VI人独立生活的强大工具。

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