Is caffeine a cognitive enhancer?

@article{Nehlig2010IsCA,
  title={Is caffeine a cognitive enhancer?},
  author={A. Nehlig},
  journal={Journal of Alzheimer's disease : JAD},
  year={2010},
  volume={20 Suppl 1},
  pages={
          S85-94
        }
}
  • A. Nehlig
  • Published 2010
  • Psychology, Medicine
  • Journal of Alzheimer's disease : JAD
The effects of caffeine on cognition were reviewed based on the large body of literature available on the topic. Caffeine does not usually affect performance in learning and memory tasks, although caffeine may occasionally have facilitatory or inhibitory effects on memory and learning. Caffeine facilitates learning in tasks in which information is presented passively; in tasks in which material is learned intentionally, caffeine has no effect. Caffeine facilitates performance in tasks involving… Expand
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TLDR
Caffeine decreased boredom and relaxation, and increased other ratings of subjective moods--anxiousness, tenseness, and nervousness, and high-to-moderate users of caffeine recalled more words than low users, particularly at the beginning of the lists. Expand
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Caffeine raised arousal, enhanced the effects of novel stimulation, and acted to slow habituation during repetitive stimulation, thus maintaining heightened arousal and supporting a multidimensional theory of caffeine effects. Expand
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It was concluded that caffeine possesses cholinergic cognition enhancing properties, and could be used as a control drug in studies using the scopolamine paradigm and possibly also in other experimental studies of cognitive enhancers, as the effects of a newly developed cognition enhancing drug should at least be superior to the effect of three cups of coffee. Expand
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Caffeine effects on the P3 elicited by target letters were more pronounced in the fatigued than in the well-rested subjects, indicating that the effects of caffeine are dependent on the state of the subject. Expand
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TLDR
Cognitive performance was found to be affected adversely by acute caffeine withdrawal and, even in the context of alertness lowered by sleep restriction, cognitive performance was not improved by caffeine in the absence of these withdrawal effects, suggesting that there is little benefit to be gained from caffeine consumption. Expand
Caffeine improves memory performance during distraction in middle‐aged, but not in young or old subjects
The present study evaluated the effect of caffeine (225 mg) on cognitive performance in young, middle‐aged, and old subjects in a placebo‐controlled parallel groups design (n=60). Groups were matchedExpand
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TLDR
Improvements were obtained in cognition for attention, problem solving and delayed recall, but not immediate recall or working memory, but performance in the placebo condition was close to the maximum, giving little margin for improvement. Expand
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Overall there is little unequivocal evidence to show that regular caffeine use is likely to substantially benefit mood or performance, and the hypothesis that caffeine may enhance cognitive performance to a greater extent in older adults than in young adults is presented. Expand
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Caffeine improved performance on a logical reasoning task and caffeine x time of day x impulsivity effects were found in analyses of visual search tasks, which support the view that the effects of caffeine depend on a combination of factors similar to those outlined for performance. Expand
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