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Visual search training for a case of homonymous field defect with multiple visual dysfunctions

机译：视觉搜索培训，用于多个视觉功能障碍的同名田间缺陷

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摘要

A 72-year-old right handed man developed right homonymous hemianopia without macular sparing, left homonymous lower quadranopia with macular sparing, cerebral amblyopia, cerebral achromatopsia, impaired form vision, and mild right hemispatial neglect, after multiple cerebral infarctions, involving bilateral occipital cortices. His intelligence and memory were deteriorated moderately. He failed to notice objects located in the affected visual field, because of his severely impaired visual search. When ordinary lighting was used, he showed severe right-sided omissions on the line cancellation test. However, omissions were less marked under the brighter lighting. By using a modified method of Kerkhoff and Vianen (1994), he was trained to make saccadic eye movements toward affected regions to find a target and to search and point at targets arranged randomly. As the sensitivity for contrast of isoluminante red and green stimuli was preserved well at high spatial frequencies despite the decreaced contrast sensitivity for brightness, we used green targets as the training stimuli. After the training, search field and pointing range that could be covered by the patient increased in size for both green and white targets, and daily activities improved. Moreover, after the training, he no longer showed discrepancy in line cancellation performances between ordinary and brighter lighting conditions. In the follow up period, the search field and the performance on the line cancellation test were maintained, while the performance of pointing targets array declined. The family members complained of mild re-deterioration of daily activities. Then, the training for searching and pointing re-introduced at home. After the training, his pointing performance and daily activities, evaluated by questionnaires to his family members, improved again. In conclusion, it was suggested that disordered visual search after a homonymous field defect can be treated effectively, even if multiple visual dysfunctions were associated.
机译：一个72岁的右手男子发育正确的同性恋的半骨质，没有黄斑味道，使同性名称巨大的Quadranopia具有黄斑味道，脑弱视，脑高瘤，患者视觉障碍和温和的右半缺失，经过多种脑梗塞后，涉及双侧枕骨皮质。他的智力和记忆量适度地恶化。由于他严重受损的视觉搜索，他未能注意到受影响视野中的对象。当使用普通照明时，他对线路取消测试显示了严重的右侧疏忽。然而，在更明亮的照明下，遗漏较小。通过使用Kerkhoff和Vianen（1994）的修改方法，他接受过培训，使扫视眼球运动朝着受影响的地区进行探讨，以找到目标并在随机排列的目标中搜索和指向。随着Isolumante红色和绿色刺激对比度的对比度的敏感性，尽管对亮度的对比度敏感度减小，但我们将绿色目标作为训练刺激。在培训之后，患者可以覆盖的搜索字段和指向范围对于绿色和白色目标的尺寸增加，以及每日活动的提高。此外，在培训之后，他不再在普通和更亮的照明条件之间取消脱离性能的差异。在跟进期间，维护搜索字段和线路取消测试的性能，而指向目标阵列的性能下降。家庭成员抱怨日常活动的温和重新恶化。然后，在家中搜索和指向的培训重新引入。在培训结束后，他指出的表现和日常活动，由对其家庭成员的问卷评估，再次得到改善。总之，有人建议在同族场缺陷之后可以有效地治疗混乱的视觉搜索，即使多个视觉功能障碍相关联。

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  • 来源
    《脳と神经》 |2004年第5期|共11页
  • 作者

    Hirayama K; Sakai S; Yamawaki R; Kondo Y; Suzuki T; Fujimoto C; Yamadori A; Mori E;

  • 作者单位

    Division of Neuropsychology Department of Disability Medicine Tohoku University Graduate School of Medicine Sendai Japan.;

    Nuclear Physics Institute Academy of Sciences of the Czech Republic Rez Czech Republic;

    Nuclear Physics Institute Academy of Sciences of the Czech Republic Rez Czech Republic;

    Nuclear Physics Institute Academy of Sciences of the Czech Republic Rez Czech Republic;

    Nuclear Physics Institute Academy of Sciences of the Czech Republic Rez Czech Republic;

    Nuclear Physics Institute Academy of Sciences of the Czech Republic Rez Czech Republic;

    Nuclear Physics Institute Academy of Sciences of the Czech Republic Rez Czech Republic;

    Nuclear Physics Institute Academy of Sciences of the Czech Republic Rez Czech Republic;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 jpn
  • 中图分类 神经病学与精神病学;
  • 关键词

    Training; Performance; Green color; Lighting; 采光;

    机译：培训;性能;绿色;照明;采光;

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