Investigating the effects of caffeine on executive functions using traditional Stroop and a new ecologically-valid virtual reality task, the Jansari assessment of Executive Functions (JEF © )

Soar, Kirstie; Chapman, Emma; Lavan, Nadine; Jansari, Ashok; Turner, John

doi:10.1016/j.appet.2016.05.021

Cited by 35 publications

(33 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results of this research are consistent with the results of Beachwood et al study indicating that coffee consumption can result in the improvement of consciousness status [4]. Also, these results are consistent with the results of some other studies [5,9,15], that showed caffeine can improve the brain's executive functions. In addition, these results are in line with the result of Lanini et al study, which shows that caffeine causes an increase in information processing speed [7].…”

Section: Discussionsupporting

confidence: 83%

“…Caffeine can cause different effects in different dosages, but taking 60 milligrams of it, usually available in a cup of coffee, can lead to improvement in consciousness and mood [4]. Caffeine consumption can also promote the cognitive and executive functions of the human brain [5]. An increase in selective attention and information processing speed has also been reported after drinking beverages containing caffeine [7,14].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Caffeine on the Fixation Component of Eye Movement in the Reading Process

Sohrabi-Otaghvari

Gavtash

Sharifi

et al. 2017

Caspian.J.Neurol.Sci

View full text Add to dashboard Cite

Background: Caffeine is a kind of methylxanthine whose consumption can promote the cognitive and executive functions of the human brain. Objectives: In this study, we seek to investigate the effect of drinking coffee on the period of the eye movement fixation component. Materials and Methods:The research was of the quasi-experimental type. 60 subjects were randomly divided into two groups of thirty. The subjects in one group drank coffee before the experiment was conducted. The other group, which is the control group, did not. Both groups would then read a text, and the eye movement tracking device would record the fixation periods of the subjects' eyes while reading. Results:The results of the independent t-test comparing the mean fixation time in the two groups demonstrated that the difference was significant at the 0.001 level, where the group that drank coffee before studying had significantly less fixation time than the control group. Additionally, Cohen's d index of 4.29 determined that the difference lies in the maximum effect size range. Conclusion: It can be concluded that drinking a cup of coffee before studying can lead to decrease in eye movement fixation period and increase in information encoding and processing speed.

show abstract

Section: Discussionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Effect of Caffeine on the Fixation Component of Eye Movement in the Reading Process

Sohrabi-Otaghvari

Gavtash

Sharifi

et al. 2017

Caspian.J.Neurol.Sci

View full text Add to dashboard Cite

show abstract

“…While some studies showed positive effects of supplementation on psychomotor, information processing speed, attention/vigilance, memory, and/or executive function, others did not. This was notably the case for tyrosine [66][67][68][69][70][71][72][73], caffeine [40][41][42][43][44][45][46] and guarana [58][59][60][61]. By contrast, several supplements, namely omega-3 [64], B vitamins [74], and nitrates [62,63] showed very little, if any effect on cognitive performance in healthy young adults.…”

Section: Overall Synthesismentioning

confidence: 94%

“…In addition, 400 mg of caffeine enhanced executive function (conflict resolution) and alertness, but not selective attention (as measured by the Attention Network Task-ANT) [41]. Furthermore, although one standard cup of caffeinated coffee improved executive function when measured by the ecologically valid Jansari Assessment of Executive Function (JEF), it failed to do so when assessed by the Stroop task [46]. This suggests that one standard cup of coffee does not influence executive function, or that traditional tests of executive function such as the Stroop task may lack the sensitivity to detect the enhancing effects of caffeine.…”

Section: Caffeinementioning

confidence: 99%

A Systematic Review of the Effect of Dietary Supplements on Cognitive Performance in Healthy Young Adults and Military Personnel

Pomeroy¹,

Tooley²,

Probert³

et al. 2020

Nutrients

View full text Add to dashboard Cite

Intake of dietary supplements has increased, despite evidence that some of these have adverse side effects and uncertainty about their effectiveness. This systematic review examined the evidence for the cognitive benefits of a wide range of dietary supplements in healthy young adult samples; the aim was to identify if any might be useful for optimising cognitive performance during deployment in military personnel. Searches were conducted in 9 databases and 13 grey literature repositories for relevant studies published between January 2000 and June 2017. Eligible studies recruited healthy young adults (18–35 years), administered a legal dietary supplement, included a comparison control group, and assessed cognitive outcome(s). Thirty-seven of 394 identified studies met inclusion criteria and were included for synthesis. Most research was deemed of low quality (72.97%; SIGN50 guidelines), highlighting the need for sound empirical research in this area. Nonetheless, we suggest that tyrosine or caffeine could be used in healthy young adults in a military context to enhance cognitive performance when personnel are sleep-deprived. Caffeine also has the potential benefit of improving vigilance and attention during sustained operations offering little opportunity for sleep. Inconsistent findings and methodological limitations preclude firm recommendations about the use of other specific dietary supplements.

show abstract

“…Einige Untersuchungen zu den Effekten von Koffein auf die Exekutivfunktionen geben, vor allem bei Individuen mit Schlafentzug, Hinweise auf Verbesserungen in einigen Teilleistungen (z. B. strategisches Planen oder Impulskontrolle) [140][141][142]; eine sichere Evaluation ist in diesem Zusammenhang aktuell jedoch nicht möglich (insbesondere in Bezug auf Teilleistungen wie Entscheidungsfindung und Urteilsvermögen) [35,128].…”

Section: Pharmakodynamische Effekte Von Koffein In Höheren Dosierungenunclassified

Koffein, das am häufigsten konsumierte Psychostimulans: eine narrative Übersichtsarbeit

Gahr

2019

Fortschr Neurol Psychiatr

View full text Add to dashboard Cite

ZusammenfassungKoffein ist das weltweit am häufigsten konsumierte Psychostimulans. Es ist nahezu unbeschränkt verfügbar und unterliegt in Europa keiner staatlichen Regulation. Neben seiner primären Rolle als Inhalts- oder Zusatzstoff in zahlreichen Getränken findet es auch medizinische Verwendung in der adjuvanten Schmerztherapie, bei primärem Atemstillstand bei Neugeborenen und es ist zugelassen für die kurzfristige Beseitigung von Ermüdungserscheinungen. Der Wirkmechanismus von Koffein als Psychostimulans in typischerweise aufgenommen Dosierungen basiert vermutlich in erster Linie auf einem zentralen Antagonismus von Adenosinrezeptoren (A1- und A2A-Rezeptoren), was zu einer zentralen Hemmung der Adenosin-vermittelten Reduktion der Aktivität des dopaminergen und aufsteigenden Aktivierungssystems führt. Die Metabolisierung von Koffein ist hautsächlich abhängig von Cytochrom P450 1A2, sodass Faktoren, die die Aktivität von CYP 1A2 beeinflussen (z. B. Medikamente, Schwangerschaft), erhebliche Veränderungen der pharmakokinetischen Parameter induzieren können. Koffein führt insbesondere bei Individuen mit Schlafentzug zu einer Verbesserung der Vigilanz, Aufmerksamkeit und Reaktionszeit. Zudem kann es sportliche Ausdauerleistungen und muskuläre Kraft verbessern. Intoxikationen mit Koffein sind selten, können jedoch letal verlaufen. In üblicherweise aufgenommenen Mengen gilt Koffeingebrauch als nicht gesundheitsschädlich. Koffein weist zahlreiche, jedoch nicht alle Merkmale einer Substanz mit „Abhängigkeitspotential“ auf; Entzugssyndrome nach Beendigung einer längeren Anwendung und Toleranz sind bekannt. Im DSM-5 wird die „Koffeingebrauchsstörung“ als mögliche künftige Störung, die gegenwärtig weiterer Forschung bedarf, rubriziert. Das Koffeingebrauchsmuster von Patienten sollte im Rahmen der ärztlichen Tätigkeit berücksichtigt werden.

show abstract

Investigating the effects of caffeine on executive functions using traditional Stroop and a new ecologically-valid virtual reality task, the Jansari assessment of Executive Functions (JEF © )

Cited by 35 publications

References 46 publications

Effect of Caffeine on the Fixation Component of Eye Movement in the Reading Process

Effect of Caffeine on the Fixation Component of Eye Movement in the Reading Process

A Systematic Review of the Effect of Dietary Supplements on Cognitive Performance in Healthy Young Adults and Military Personnel

Koffein, das am häufigsten konsumierte Psychostimulans: eine narrative Übersichtsarbeit

Contact Info

Product

Resources

About