Schenkenberg T, Bradford D C, Ajax E T
Neurology. 1980 May;30(5):509-17. doi: 10.1212/wnl.30.5.509.
Unilateral visual neglect is a common symptom or sign in patients with lesions of the nondominant hemisphere. Several techniques have been used to demonstrate visual neglect. One such technique--asking a patient to bisect a horizontal line and expecting an estimate of center away from the side neglected--has been used for over 70 years but has not been statistically evaluated. We conducted a formal evaluation of this method and found that under special conditions, line-bisection performance can discriminate between patients with right-hemisphere lesions and patients with diffuse lesions, patients with left-hemisphere lesions, and hospital controls. When used to investigate visual neglect in an individual patient, the line-bisection test should be given in conjunction with other complementary procedures such as symmetric drawings and the Memory-for-Designs Test.
单侧视觉忽视是大脑非优势半球病变患者常见的症状或体征。有多种技术被用于证明视觉忽视。其中一种技术——要求患者将一条水平线二等分，并期望其对中点的估计偏离被忽视的一侧——已经使用了70多年，但尚未进行统计学评估。我们对该方法进行了正式评估，发现在特殊条件下，线段二等分表现能够区分右半球病变患者与弥漫性病变患者、左半球病变患者以及医院对照组。当用于调查个体患者的视觉忽视时，线段二等分测试应与其他补充程序（如对称图形绘制和图案记忆测试）结合使用。
