EVALUATION AND REHABILITATION OF UNILATERAL SPATIAL NEGLECT: DEVELOPMENT OF A SYSTEM USING LIQUID-CRYSTAL DISPLAY MONITOR WITH TOUCH PANEL

单侧空间忽略是指大脑半球损伤对侧的刺激不能反应或定向。它通常表现为右半球损伤后的左侧忽视。本研究的目的是评估单侧空间忽略使用液晶显示器与触摸面板，以澄清这种疾病的视觉空间过程，并开发训练工具，视觉刺激的动态变化，根据患者的反应。带触摸屏的系统提供以下八项任务。1.线对分试验。2.线平分测试，提示到左端点。3.提示到左端点后的线图像二分。4.从右端点到左端点的线跟踪任务。5.从右端点到左端点的行擦除任务。6.带划掉的行取消测试。7.实际擦除的行取消测试。8.星星取消测试。线对分测试（1.和2.）有助于准确评估单侧空间忽略。此外，他们只花了约15分钟，即使多达90行不同长度的病人。在线对分测试中，向左端点提示在一定程度上改善了忽视。对右半空间刺激的过度注意被认为是单侧空间忽视的主要表现。线图像的二等分（3.），然而，揭示了忽视是没有改善的情况下，右侧的物理刺激。行跟踪和擦除任务（4.和5.）以及具有实际擦除的行消除（7.）有助于训练严重忽视患者的运动执行能力。取消任务（6.和8.）可以取代他们的纸笔版本。每个任务都是有用的错误反馈给忽视患者。行为注意力不集中测试（BIT），日文版也被标准化和出版。

Unilateral spatial neglect is a failure to respond or orient to stimuli contralateral to a hemispheric lesion. It usually appears as left neglect after right hemispheric lesions. The present study aimed to evaluate unilateral spatial neglect using a liquid-crystal-display monitor with touch panel, to clarify visuospatial processes underlying this disorder, and to develop training tools where visual stimuli were dynamically changed according to patients' responses. The system with touch panel provides the following eight tasks. 1. Line bisection test. 2. Line bisection test with cueing to the left endpoint. 3. Bisection of line image after cueing to the left endpoint. 4. Line-tracing task from the right to the left endpoint. 5. Line-erasing task from the right to the left endpoint. 6. Line cancellation test with crossing-out. 7. Line cancellation test with actual erasing. 8. Star cancellation test. The line bisection tests (1. and 2.) were useful for exact evaluation of unilateral spatial neglect. Besides, they took only about 15 min even when as much as 90 lines of various lengths are given to the patients. Cueing to the left endpoint improved neglect to some degree in the line bisection test. Overattention to stimuli in the right hemispace is considered to take a major part in the manifestation of unilateral spatial neglect. Bisection of line image (3.), however, revealed that neglect is not ameliorated in the absence of the right-sided physical stimuli. The line tracing-and erasing-tasks (4. and 5.) and the line cancellation with actual erasing (7.) contributed to training of leftward motor execution inn patients with severe neglect. The cancellation tasks (6. and 8.) could replace their paper-and-pencil versions. Each task was useful for the feedback of errors to patients with neglect. Behavioral Inattention Test (BIT), Japanese edition was also standardized and published.