Effects of smoking on visual and auditory reaction time
This study was conducted to determine the effects of three different levels of nicotine (low, medium and high) on visual and auditory reaction time of twenty regular male University smokers aged 18 and 42 years. Subjects participated in three sessions with an Automatic Performance Analyzer used to record the reaction time. During the first session, the subjects were tested using low nicotine level. The second session involved the use of medium=nicotine level, while the third session consisted of the use of high nicotine level. One-way analysis of variance (ANOVA) was used to determine if a significant difference existed among the means of low, medium and high nicotine levels in both light and sound variables. Significant F-ratios of 7.48 and 3.803 were found for the light and sound variables, respectively (p< O. OS). In both variables Duncan's multiple range was used to follow up the significance. This means that three different levels of nicotine affected both visual and auditory reaction times. The medium level was found to have a faster reaction time than both low and high nicotine levels. Pearson correlation was used to determine the relationship between the reaction time for light and sound variables. A probability value of 0.054 found was not statistically significant, which means there is some relationship between the visual and auditory reaction time scores at three different levels of nicotine i.e. the reaction time for the sound variable is faster than for light variable at all the three different levels of nicotine.