Andre J T, Tyrrell R A, Leibowitz H W, Nicholson M E, Wang M
Department of Psychology, Pennsylvania State University, University Park 16802-3106.
Percept Psychophys. 1994 Sep;56(3):261-7. doi: 10.3758/bf03209760.
Contrast sensitivity was measured for 12 healthy young males while sober, after ingestion of an alcohol placebo, and after ingestion of alcohol (95% grain alcohol; mean estimated blood alcohol level = .088%). Observations were made for both stationary gratings and gratings that traveled through a circular path and required pursuit eye movements. The significant alcohol-related reduction in contrast sensitivity was 2.6 times greater for moving (.29-log-unit reduction) than for stationary gratings (.11-log-unit reduction). The loss in contrast sensitivity for the moving gratings of high spatial frequency (12 cpd) was particularly severe (.37 log unit). Estimated blood alcohol level was correlated with the loss in contrast sensitivity for moving gratings (r = .61), but not with the loss for stationary gratings. Estimated blood alcohol level was strongly correlated with the difference between the loss in contrast sensitivity to moving and stationary gratings (r = .75). These results are consistent with reports that alcohol consumption degrades the ability to make pursuit eye movements. Subjects' perceived intoxication level was not a reliable predictor of any index of visual performance.
对12名健康年轻男性在清醒状态下、摄入酒精安慰剂后以及摄入酒精（95%谷物酒精；平均估计血液酒精浓度 = 0.088%）后进行了对比敏感度测量。对静止光栅和沿圆形路径移动且需要追踪眼球运动的光栅都进行了观察。与酒精相关的对比敏感度显著降低，对于移动光栅（降低0.29对数单位）比对于静止光栅（降低0.11对数单位）大2.6倍。高空间频率（12周/度）移动光栅的对比敏感度损失尤为严重（0.37对数单位）。估计血液酒精浓度与移动光栅的对比敏感度损失相关（r = 0.61），但与静止光栅的损失无关。估计血液酒精浓度与移动和静止光栅对比敏感度损失之间的差异密切相关（r = 0.75）。这些结果与关于饮酒会降低追踪眼球运动能力的报道一致。受试者的自我感知醉酒程度并不是视觉表现任何指标的可靠预测因素。
