A vigilance task sensitive to the effects of stimulants, hypnotics, and environmental stress: The Scanning Visual Vigilance Test
A vigilance task sensitive to the effects of stimulants, hypnotics, and environmental stress: The Scanning Visual Vigilance Test
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DOI：
10.3758/bf03200674
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发表时间：
1998-08-01
期刊：
影响因子：
--
通讯作者：
Kobrick, J
中科院分区：
文献类型：
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作者：
Lieberman, HR;Coffey, B;Kobrick, J
扫描视觉警觉测试是一种可变长度的检测测试，旨在评估个人在持续时间内保持视觉警觉的能力。该测试旨在对由性能的细微变化产生的警惕性变化敏感，例如由低剂量的中枢作用食物成分、药物或环境应激产生的变化。该测试已被证明对兴奋剂和镇静剂的影响以及冷应激和睡眠不足敏感。它要求受试者连续扫描视频监视器，以检测难以检测的罕见刺激的发生。记录正确检测到的刺激的数量、假警报和反应时间。刺激是在随机或伪随机时间在视频监视器的较暗区域上的随机位置显示2秒的小矩形。刺激的亮度可以在自动阈值检测测试中针对每个受试者单独进行调整。训练和测试会话长度由实验者定义。硬件要求是IBM兼容的个人计算机（286或更高），配有彩色或灰度VGA显示器。
The Scanning Visual Vigilance Test is a variable-length detection test designed to assess the ability of individuals to maintain visual alertness for sustained periods of time. The test was designed to be sensitive to changes in vigilance produced by subtle variations in performance, such as those produced by low doses of centrally acting food constituents, drugs, or environmental stress. The test has been shown to be sensitive to the effects of stimulants and sedatives, as well as cold stress and sleep loss. It requires the subject to continuously scan a video monitor to detect the occurrence of infrequent stimuli that are difficult to detect. The number of stimuli correctly detected, false alarms, and reaction times are recorded. The stimulus is a small rectangle displayed for 2 sec at random locations on a darker region of a video monitor at random or pseudo-random times. The brightness of the stimulus can be adjusted for each subject individually on an automated threshold detection test. Training and test session length are defined by the experimenter. Hardware requirements are an IBM-compatible personal computer (286 or higher) with a color or grayscale VGA monitor.