Effects of Caffeine on Cognitive Tasks

Based on a number of literature on this topic, the impact of caffeine on cognition was examined. Caffeine sometimes promotes or inhibits memory and learning, but caffeine usually does not affect the performance of learning and memory tasks. Caffeine helps learn with the task of passively presenting information, and caffeine has no effect in the task of consciously learning teaching materials. Caffeine contributes to the performance of tasks that require a limited degree of working memory, but it hampers the performance of tasks that heavily depend on working memory and caffeine does not perform memory performance under suboptimal alarm conditions It seems to improve. However, most studies found that the reaction time was improved. Intake of caffeine does not seem to affect long-term memory. Significant improvement in the performance of fatigue subjects confirms that caffeine is a mild stimulant

A positive effect on caffeine's long-term memory has been confirmed in studies that analyzed normal caffeine intake of coffee or tea in addition to other substances. Observe their impact on the cognitive process by performing many cognitive tasks. Words were presented and delayed recalls were measured. Individuals with moderate to high addictive caffeine intake (average 710 mg / week) succeeded compared to people with lower addictive caffeine intake (average 178 mg per week), so the delayed recall Showed an increase There are more words to remember. Therefore, the improvement in long-term memory performance indicates that the habitual caffeine intake increases for better storage or reuse. In a similar study, caffeine's cognition and its effect on mood were evaluated, and recall of caffeine intake was improved. Dose-response relationships were observed as individuals were able to recall more words with more caffeine after a period of time

Two experiments examined the effect of breakfast (1.89 MJ) and caffeine (4 mg / kg) on ​​cognitive performance, mood and cardiovascular function. In the first experiment, breakfast did not affect the performance of continuous attention task, but the pulse rate increased and affected the mood. The emotional impact after breakfast differs between hot breakfast and cereal / toast breakfast. Contrary to the effect of breakfast, this relatively high dose of caffeine improves the performance of sustained attention work, elevated blood pressure, and mental agility. In the second experiment, the results of the first study were confirmed by the effect of breakfast and caffeine on mood and cardiovascular function. Breakfast improves the performance of recognition of free recall and memory task, does not affect semantic memory tasks, and weakens the accuracy of execution of logical inference tasks.