Visual neglect is a frequent and disabling consequence of right brain damage. Traditional paper-and pencil tests of neglect have limited sensitivity and ecological validity. The Baking Tray Task (BTT), instead, approaches real-life situations, because it requires participants to place 16 physical objects on a board. The number of objects placed on the left and right portions of the board provides a clinical index of visual neglect. Here we present E-TAN, a technology-enhanced platform for BTT (E-BTT). E-BTT automatically determines the object locations on the board, and also records the sequence and timing of their placement. We used E-BTT to test 9 patients with right hemisphere damage and compared their performance with that obtained by 115 healthy participants. To this end, we developed a new method of analysis of participants' performance, based on the use of the convex hull described by the objects on the board. This measure provides an estimate of the portion of space processed by each participant and can effectively discriminate neglect patients from patients without neglect. E-TAN allows clinicians to assess visuospatial performance by using a convenient, fast, and relatively automatized procedure, that patients can even perform at home to follow-up the effects of rehabilitation.

中文翻译：

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E-TAN，一个有形物体的技术增强平台，用于评估视觉忽视：一个多案例研究

视觉忽视是右脑损伤的常见致残后果。传统的纸笔忽视测试的敏感性和生态有效性有限。相反，烤盘任务 (BTT) 更接近现实生活中的情况，因为它要求参与者将 16 个物体放在烤盘上。放置在棋盘左右部分的物体数量提供了视觉忽视的临床指标。在这里，我们介绍了 E-TAN，一种用于 BTT (E-BTT) 的技术增强平台。E-BTT 自动确定板上的对象位置，并记录它们放置的顺序和时间。我们使用 E-BTT 测试了 9 名右半球受损的患者，并将他们的表现与 115 名健康参与者的表现进行了比较。为此，我们开发了一种分析参与者表现的新方法，基于使用板上物体描述的凸包。该措施提供了对每个参与者处理的空间部分的估计，可以有效地区分被忽视的患者和没有被忽视的患者。E-TAN 允许临床医生通过使用方便、快速和相对自动化的程序来评估视觉空间性能，患者甚至可以在家中执行以跟踪康复效果。