Lacho L, Kokavec M
Soud Lek. 1980;25(2):22-7.
The authors examined changes in the behaviour of car drivers under the effect of coffeini matrii benzoici in doses of 250 mg (125 mg pure caffeine) and 500 mg (250 mg pure caffeine) in a single experimental group who had been exposed, prior to that, to a zero control experiment. The behaviour changes were examined immediately after the smoking of 5 cigerettes in a row. The experimental subjects' reaction was investigated using the determination set, their attention--using a modified Block test. 125 mg pure caffeine proved to have an excitatory effect on most of the group, with an overall improvement in performance, brightening up of mental processes, with the rate of mistakes dropping, attention and reaction improving in comparison with the proceding zero experiment. A dose of 250 mg caffeine had an inhibitory effect on most of the probands with the overall quality of performance deteriorating in all of the group; the quality of attention was worse, too, while reaction showed a moderate degree of improvement as a result of transfer. The experiment involving smokers after a dose of 5 cigarettes showed a deterioration in the capacity for concentration and a higher rate of errors in the performance of sensorimotor task while the reaction capacity remained normal.
作者在一个实验组中，研究了服用250毫克（125毫克纯咖啡因）和500毫克（250毫克纯咖啡因）苯甲酸钠咖啡因后汽车驾驶员行为的变化，该实验组在此之前曾进行过零对照实验。在连续吸5支烟后立即检查行为变化。使用测定装置研究实验对象的反应，使用改良的布洛克测试研究他们的注意力。结果证明，125毫克纯咖啡因对该组大多数人有兴奋作用，整体表现有所改善，心理过程更加活跃，错误率下降，与之前的零实验相比，注意力和反应能力有所提高。250毫克咖啡因剂量对大多数受试者有抑制作用，该组所有人的整体表现质量都有所下降；注意力质量也较差，而反应由于转移而有适度改善。对吸烟者在吸5支烟后的实验表明，他们的注意力集中能力下降，在执行感觉运动任务时错误率更高，而反应能力保持正常。
