[咖啡因对运动反应及视觉心理加工时间的影响]

[Effect of caffeine on motor reactions and visual-mental processing time].

作者信息

Krueger H, Zülch J, Gandorfer M

出版信息

Z Ernahrungswiss. 1979 Mar;18(1):51-61. doi: 10.1007/BF02026537.

DOI:10.1007/BF02026537

Abstract

The effect of coffee without and with caffeine (200 mg) on the performance of "awake" respectively "fatigued" subjects was proved. 5 females and 7 males (22 to 32 years) were chosen for the cross-over double-blind study. Motor reaction time, visual-mental processing time, reading-speed and reading-errors were recorded. Further experiments under aggravated conditions were carried out. In the morning ("awake") caffeine increases the efficiency of all parameters excepted the reading errors. At night ("fatigued") the increase by caffeine is insignificant. Even in some subjects caffeine decreases the speed of reading and increases the number of errors. Under test-conditions, which were aggravated by strong acoustical disturbance, caffeine does not improve efficiency, compared with caffeine-free coffee. Overriding into the range of decreasing performance in spite of increasing central activity was not found under any test-condition.

摘要

研究证实了不含咖啡因和含有200毫克咖啡因的咖啡分别对“清醒”和“疲劳”受试者表现的影响。选取了5名女性和7名男性（年龄在22至32岁之间）进行交叉双盲研究。记录了运动反应时间、视觉心理处理时间、阅读速度和阅读错误。在加重条件下进行了进一步实验。早上（“清醒”状态），咖啡因可提高除阅读错误外所有参数的效率。晚上（“疲劳”状态），咖啡因的提高作用不显著。甚至在一些受试者中，咖啡因会降低阅读速度并增加错误数量。在受到强烈声音干扰而加重的测试条件下，与无咖啡因咖啡相比，含咖啡因咖啡并未提高效率。在任何测试条件下均未发现尽管中枢活动增加但表现却下降的情况。