Mood and Performance Foods

Meiselman, Herbert L.; Lieberman, Harris R.

doi:10.1007/978-1-4615-2073-3_7

Cited by 4 publications

(5 citation statements)

References 54 publications

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“…Tyrosine has not demonstrated consistent effects in modifying cold-induced decrements in the ability to learn a new response sequence as part of the repeated acquisition task, as was shown above with the encoding deficits in the matching to sample test (Ahlers, Thomas, Schrot et al, 1994). In the present study, caffeine also did not affect incorrect responses, and this result is consistent with the findings from other studies that the effect of caffeine on complex cognitive performances requiring memory or learning has shown inconclusive results (Lieberman, 1992;Meiselman and Lieberman, 1994) or no improvement (Battig, Buzzi, Martin et al, 1984).…”

Section: Repeated Acquisitionsupporting

confidence: 93%

“…However, caffeine (up to 600 mg) was also not effective in another study assessing matching to sample performance, with a shorter sleepdeprivation period, ranging from 48 to 64.5 hours (Penetar, McCann, Thome et al, 1994). Therefore, the lack of beneficial effects of caffeine on complex cognitive performance, as measured by the matching to sample test, could also be due to the fact that caffeine has shown inconclusive results (Lieberman, 1992;Meiselman and Lieberman, 1994) or no improvement (Battig, Buzzi, Martin et al, 1984) on memory and learning tasks.…”

Section: Matching To Samplementioning

confidence: 99%

“…However, caffeine was effective in improving time-to-completion in the repeated acquisition task. Athough cognitive performance may not be affected by caffeine, vigilance performance is usually enhanced (Meiselman and Lieberman, 1994).…”

Section: Repeated Acquisitionmentioning

confidence: 99%

“…Caffeine appears to improve performance on tasks that require sustained attention (Meiselman and Lieberman, 1994) rather than cognitive functions (Battig, Buzzi, Martin, and Feierabend, 1984). The ability to pay attention is critical to complete the repeated acquisition test.…”

Section: Repeated Acquisitionmentioning

confidence: 99%

See 3 more Smart Citations

The Use of Caffeine to Enhance Cognitive Performance, Reaction Time, Vigilance, Rifle Marksmanship, and Mood States in Sleep-Deprived Navy SEAL (BUD/S) Trainees

Tharion¹,

Shukitt‐Hale²,

Coffey³

et al. 1997

PsycEXTRA Dataset

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Caffeine has been shown to improve tasks with a vigilance component. The purpose of this study was to determine the effectiveness of caffeine in sleep-deprived individuals exposed to high levels of operational and environmental stress. Volunteers were 68 Navy SEAL trainees. Volunteers were administered caffeine (100, 200, 300 mg or placebo) after 72 hrs of sleep deprivation. Performance testing occurred 1-1.5 hrs and 8-10 hrs after caffeine or placebo administration. Tests included auditory and visual vigilance tests, four-choice reaction time, matching to sample, repeated acquisition, rifle marksmanship, mood and subjective sleepiness assessment. The combined effects of sleep deprivation and the operational and environmental stress of training significantly affected all measures adversely (ANOVAs, p<0.05 to 0.0001). Caffeine (200 or 300 mg) significantly improved (p<0.05) visual vigilance, reaction time, repeated acquisition, mood and alertness measures compared to placebo when sleep-deprived. Marksmanship was not affected by caffeine.

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Section: Repeated Acquisitionsupporting

confidence: 93%

Section: Matching To Samplementioning

confidence: 99%

Section: Repeated Acquisitionmentioning

confidence: 99%

Section: Repeated Acquisitionmentioning

confidence: 99%

See 2 more Smart Citations

The Use of Caffeine to Enhance Cognitive Performance, Reaction Time, Vigilance, Rifle Marksmanship, and Mood States in Sleep-Deprived Navy SEAL (BUD/S) Trainees

Tharion¹,

Shukitt‐Hale²,

Coffey³

et al. 1997

PsycEXTRA Dataset

Self Cite

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show abstract

“…For example, Wendte et al5 painstakingly documented the habitual intake of their participants, selecting those who regularly ingested from 100 to 500 mg of caffeine a day, finding an actual consumption range of 154–1285 mg. Such is the ubiquity of caffeine that it provides methodological challenges in terms of investigating its effects: it is difficult to provide a truly caffeine-free diet6 and given that the vast majority of people in countries such as the United States ingest caffeine of various forms almost daily,2 few research participants can present to a laboratory as truly caffeine naive.…”

Section: Introductionmentioning

confidence: 99%

Effects of caffeine on sleep quality and daytime functioning

O’Callaghan¹,

Muurlink²,

Reid³

2018

RMHP

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Caffeine (particularly in the form of coffee) is one of the most widely consumed stimulants in the world, with 90% of American adults consuming caffeine-infused beverages almost daily. While there is substantial evidence that caffeine enhances performance, caffeine withdrawal leads to deficits at both the individual (eg, cognitive, emotional, and behavioral processes) and societal (eg, increases in work accidents) level. Scholars for some time have considered that the supposed psychoactive benefits of caffeine may be the result of the mere reversal of deleterious effects of caffeine withdrawal, rather than a net benefit of caffeine ingestion. In this integrative review, we examine evidence illuminating the relationship between caffeine consumption and subsequent quality and quantity of nighttime rest. Secondly, we consider evidence as to whether performance deficits caused by sleep deprivation linked to caffeine can be reversed by caffeine consumption during the subsequent daytime period. Finally, we consider how these two stages can be reconciled in a single model that enables calculation of the net caffeine effect on daytime functioning. The literature highlights a range of positive impacts of caffeine consumption on both physical and cognitive functioning. There are also a number of factors that complicate any conclusions that can be drawn regarding the potential of caffeine to improve performance. Most critically, performance improvements the next day may simply be a result of the reversal of caffeine withdrawal. Animal studies and well-controlled human studies involving high habitual and low habitual users tend to confirm a “net benefit” for caffeine use. Further research, particularly with (necessarily rare) caffeine-naive populations, is required to elucidate the complexities of the relationship between caffeine, sleep, and daytime functioning. However, the convenience of accessing caffeine compared to ensuring adequate restorative sleep means that caffeine has applied advantages that are likely to see its use as a performance “enhancing” substance persist.

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Behavioral Determinants for the Ingestion of Food Phytochemicals

Johns

1997

Functionality of Food Phytochemicals

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Mood and Performance Foods

Cited by 4 publications

References 54 publications

The Use of Caffeine to Enhance Cognitive Performance, Reaction Time, Vigilance, Rifle Marksmanship, and Mood States in Sleep-Deprived Navy SEAL (BUD/S) Trainees

The Use of Caffeine to Enhance Cognitive Performance, Reaction Time, Vigilance, Rifle Marksmanship, and Mood States in Sleep-Deprived Navy SEAL (BUD/S) Trainees

Effects of caffeine on sleep quality and daytime functioning

Behavioral Determinants for the Ingestion of Food Phytochemicals

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