Effects of habitual caffeine use and acute ingestion: Testing a biobehavioral model

Smith, Barry D.; Rafferty, Jennifer; Lindgren, Karen N.; Smith, D.; Nespor, Amy A.

doi:10.1016/0031-9384(92)90214-m

Cited by 29 publications

(7 citation statements)

References 37 publications

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“…Both the unaffected P300 amplitude from previous studies and the smaller P300 amplitude from the present study seem to imply that in these studies, caffeine exerted its psychophysiological effect mainly through a mechanism other than increasing alertness, since elevated arousal is generally related to a larger P300 amplitude 31~. The precise reason for the discrepancy among these studies is not yet clear, because the psychophysiological actions of caffeine are very complicated 9,13,14,19,26) and caffeine-related P300 research has just begun 3,. Moreover, how the P300 component may vary across different paradigms and response conditions has not yet been well-characterized :''3~ Nevertheless, the specific procedural and parametric differences utilized by the present and previous studies have contributed a potential source of discrepancy in the P300 amplitude between these studies ~.30,.~.…”

Section: Discussioncontrasting

confidence: 67%

Acute Caffeine Effect on Repeatedly Measured P300.

Pan

Takeshita

Morimoto

2000

Environ. Health Prev. Med.

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The acute effect of a single-dose of caffeine on the P300 event-related brain potential (ERP) was assessed in a study using a repeatedly presented auditory oddball button-press task. A dose (5mg/kg body-weight) of either caffeine or placebo lactose, dissolved in a cup of decaffeinated coffee, was administered double-blindly to coffee drinkers who had abstained from coffee for 24hrs, with the presentation order of the sessions counterbalanced and separated by 2-4 weeks. The caffeine-treatment condition demonstrated a smaller P300 amplitude and a shorter latency overall than the placebo treatment condition. The mean P300 amplitude value difference (caffeine minus placebo) increased with the successive trial blocks. Caffeine ingestion appears to yield a lower resource-consumption and a net increase in allocating attention resources for task performance across repeated measurements.

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Section: Discussioncontrasting

confidence: 67%

Acute Caffeine Effect on Repeatedly Measured P300.

Pan

Takeshita

Morimoto

2000

Environ. Health Prev. Med.

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“…This situation is a learning task that is different from free recall since the experimenter is giving the cue for recall. Caffeine does not affect paired-associate learning performance when recall is assessed immediately [3][4][5], nor when tested after a delay of 20-30 min [4].…”

Section: Caffeine and Incidental Versus Intentional Learningmentioning

confidence: 81%

Is Caffeine a Cognitive Enhancer?

Nehlig

2010

JAD

313

252

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Abstract. 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 working memory to a limited extent, but hinders performance in tasks that heavily depend on working memory, and caffeine appears to rather improve memory performance under suboptimal alertness conditions. Most studies, however, found improvements in reaction time. The ingestion of caffeine does not seem to affect long-term memory. At low doses, caffeine improves hedonic tone and reduces anxiety, while at high doses, there is an increase in tense arousal, including anxiety, nervousness, jitteriness. The larger improvement of performance in fatigued subjects confirms that caffeine is a mild stimulant. Caffeine has also been reported to prevent cognitive decline in healthy subjects but the results of the studies are heterogeneous, some finding no age-related effect while others reported effects only in one sex and mainly in the oldest population. In conclusion, it appears that caffeine cannot be considered a 'pure' cognitive enhancer. The indirect action of caffeine on arousal, mood and concentration contributes in large part to its cognitive enhancing properties.

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“…In the present study, we found no main effect of caffeine, but a reliable interaction between drug states did occur. In regard to cued recall, Smith et al (1991) found that caffeine did not in¯uence memory after 30 min. We also found no effect of caffeine on cued recall, but previous work in our lab suggests that caffeine state-dependency can occur (Kelemen WL, Creeley CE.…”

Section: Discussionmentioning

confidence: 97%

Caffeine (4 mg/kg) influences sustained attention and delayed free recall but not memory predictions

Kelemen¹,

Creeley²

2001

Human Psychopharmacology

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This experiment was conducted to examine the influence of a moderate dose of caffeine (4 mg/kg) on delayed memory, metamemory, and sustained attention. One hundred and forty-two volunteers ingested either caffeine or placebo during a study session which included three different memory tasks (free recall, cued recall, and recognition), and they made predictions of future memory performance. On day 2, participants again ingested either caffeine or placebo and completed memory tests. Sustained attention performance was measured on both days, and caffeine reliably improved hit rates and response latencies. A reliable drug-state interaction was detected only in the free recall test of memory. Caffeine did not affect the magnitude or accuracy of memory predictions, but there was some evidence that expectancies about caffeine were related to cognitive performance. Overall, caffeine's impact on memory and metamemory was not robust in this study. Copyright 2001 John Wiley & Sons, Ltd.

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Effects of habitual caffeine use and acute ingestion: Testing a biobehavioral model

Cited by 29 publications

References 37 publications

Acute Caffeine Effect on Repeatedly Measured P300.

Acute Caffeine Effect on Repeatedly Measured P300.

Is Caffeine a Cognitive Enhancer?

Caffeine (4 mg/kg) influences sustained attention and delayed free recall but not memory predictions

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