Section of Communication Disorders, Faculty of Health Care Sciences, Himeji Dokkyo University, 7-2-1 Kami-ono, Himeji, Hyogo 670-8524, Japan.
J Clin Neurosci. 2013 Jun;20(6):837-41. doi: 10.1016/j.jocn.2012.07.014. Epub 2013 Apr 28.
In this study, we investigated the horizontal visual search ability and pattern of horizontal visual search in a large space performed by patients with unilateral spatial neglect (USN). Subjects included nine patients with right hemisphere damage caused by cerebrovascular disease showing left USN, nine patients with right hemisphere damage but no USN, and six healthy individuals with no history of brain damage who were age-matched to the groups with brain right hemisphere damage. The number of visual search tasks accomplished was recorded in the first experiment. Neck rotation angle was continuously measured during the task and quantitative data of the measurements were collected. There was a strong correlation between the number of visual search tasks accomplished and the total Behavioral Inattention Test Conventional Subtest (BITC) score in subjects with right hemisphere damage. In both USN and control groups, the head position during the visual search task showed a balanced bell-shaped distribution from the central point on the field to the left and right sides. Our results indicate that compensatory strategies, including cervical rotation, may improve visual search capability and achieve balance on the neglected side.
在这项研究中，我们调查了单侧空间忽略（USN）患者在大空间中进行水平视觉搜索的能力和模式。受试者包括九名因脑血管疾病导致右侧大脑损伤且表现出左侧 USN 的患者，九名因右侧大脑损伤但无 USN 的患者，以及六名无大脑损伤史且与右侧大脑损伤组年龄匹配的健康个体。在第一项实验中记录了完成的视觉搜索任务数量。在任务期间连续测量颈部旋转角度，并收集测量的定量数据。在右侧大脑损伤的受试者中，完成的视觉搜索任务数量与总行为忽视测试常规分量表（BITC）评分之间存在很强的相关性。在 USN 和对照组中，视觉搜索任务期间的头部位置在从场中央到左侧和右侧的平衡点上呈现出平衡的钟形分布。我们的结果表明，包括颈椎旋转在内的代偿策略可能会提高视觉搜索能力并在忽略侧达到平衡。
