Effect of Coffee on the Speed of Subject-Paced Information Processing

Bättig, K.; Buzzi, R.

doi:10.1159/000118312

Cited by 59 publications

(15 citation statements)

References 9 publications

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“…Self-paced, interactive tasks have been used to measure capacity of information processing. The rapid information processing (RIP) task is a commonly used measure that adjusts the rate with which visual information is presented as a function of the subject's ability to encode and respond to the information (Battig and Buzzi, 1986). Correct responding increases the presentation rate and omissions and errors slow the presentation rate.…”

Section: Introductionmentioning

confidence: 99%

Effects of d-amphetamine in human models of information processing and inhibitory control

Fillmore

Kelly

Martin

2005

Drug and Alcohol Dependence

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Although stimulants are generally associated with enhanced information processing, reports of stimulant effects on behavioral functions that rely on inhibitory processes have been inconsistent. The present research tested the joint effects of d-amphetamine on information processing and inhibitory control in healthy adults (N = 22) with no reported history of illicit stimulant use or drug dependence. Information processing was measured by a rapid information processing (RIP) task and inhibitory control was measured using a stop-signal task. Performance was measured in response to 15 mg/70 kg, 7.5 mg/70 kg, and 0 mg/70 mg (placebo) doses of d-amphetamine, administered double-blind in a randomized, within-subjects design. Results showed that damphetamine improved information processing in a dose-dependent manner. By contrast, no enhancement of response inhibition was observed. Stimulant effects were also observed in physiological and subjective effects measures. The findings indicate that a stimulant drug can enhance aspects of cognitive functioning without producing a concomitant improvement in inhibitory control of behavior. The findings highlight the complex nature of stimulant effects on human behavior and the utility of performance tasks as models of complex behavioral and cognitive functions.

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Section: Introductionmentioning

confidence: 99%

Effects of d-amphetamine in human models of information processing and inhibitory control

Fillmore

Kelly

Martin

2005

Drug and Alcohol Dependence

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“…For instance, in studies on the effects of caffeine deprivation, saliva assays have provided a measure of compliance or of abstinence prior to the test session (Battig and Buzzi, 1986;Sicard et al, 1996). They have also been used to monitor caffeine levels throughout the test period (Lorist et al, 1994;Hofer and Battig, 1993) to distinguish between experimental conditions following a caffeine manipulation.…”

Section: Introductionmentioning

confidence: 99%

Caffeine levels in saliva: associations with psychosocial factors and behavioural effects

Brice

Smith

2001

Human Psychopharmacology

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The present study had two main aims. The first was to examine associations between psychosocial factors, health-related behaviours, regular level of caffeine consumption, time of day and levels of caffeine in saliva following acute caffeine challenges. The second aim was to determine whether individual differences in changes in performance following ingestion of caffeine were related to levels of caffeine in saliva. One hundred and forty-four young adults participated in the study. Questionnaires were administered prior to the study to measure psychosocial characteristics, health-related behaviours and habitual levels of caffeine consumption. Two double-blind acute caffeine challenges were then carried out 1 week apart. Volunteers were given either placebo or 1.5 or 3 mg/kg of caffeine on each occasion. The challenges were carried out at 8 : 00, 11 : 00, 14 : 00 or 18 : 00 h so that the impact of time of day could be assessed. In the week between the two challenges the volunteers consumed either caffeinated or decaffeinated products. This allowed investigation of the effects of caffeine withdrawal on caffeine metabolism. Prior to each caffeine challenge volunteers performed a range of tasks, and a baseline saliva sample was taken. The tasks were repeated 1 h after ingestion of the caffeine, with saliva samples being taken at the start and end of the 1 h test battery. The results showed that the level of caffeine in the saliva was a good indicator of the dose of caffeine consumed and of compliance with the withdrawal manipulation. Caffeine levels were not influenced by time of day, habitual caffeine consumption, psychosocial factors or health-related behaviours. Individual differences in caffeine levels in saliva were not related to the individual variation in the effects of caffeine on performance. Copyright 2001 John Wiley & Sons, Ltd.

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“…Furthermore, caffeine minimizes the decrements in information processing skills and vigilance performance associated with fatigue (Battig and Buzzi, 1986). This is reflected by caffeineinduced improvements in subjective alertness (Lieberman et al, 1987a; Uematsu et d., 1987), particularly in younger subjects (Swift and Tiplady, 1988).…”

Section: Introductionmentioning

confidence: 99%

The effects of caffeine on two computerized tests of attention and vigilance

Frewer

Lader

1991

Human Psychopharmacology

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Single doses of caffeine (250 mg, 500 mg) or placebo were administered double-blind to healthy volunteer subjects (n = 12), using a fully balanced crossover design (Williams square) with 1-week washout. Assessments were made predrug, and at 45 min and 165 min post-drug administration. The test battery comprised physiological measures (blood pressure, heart rate and urinary volume), subjective measures of alertness, a letter cancellation task (one-target, two-target and four-target versions), and two computerized measures of attention and vigilance: a rapid information processing task and a continuous attention task. Physiological variables did not alter following caffeine administration, but subjective and cognitive variables showed significant changes in the predicted direction. Thus, doserelated changes in subjective calmness and interest were observed, together with changes in performance for the letter cancellation task at low and intermediate difficulty levels. A dose-related performance improvement was observed for the rapid information processing task. The continuous attention task was also sensitive to the effects of caffeine. The 250 mg dose offset the decline in attention observed under placebo, and indeed facilitated performance at both post-drug administration times. The 500 mg dose impaired performance at 45 rnin and improved it at the 165 min post-administration time. Sensitivity to vigilance change was also observed within test sessions for this test, indicating that the continuous attention task was more sensitive to caffeine-induced changes in attention than the rapid information processing task.

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Effect of Coffee on the Speed of Subject-Paced Information Processing

Cited by 59 publications

References 9 publications

Effects of d-amphetamine in human models of information processing and inhibitory control

Effects of d-amphetamine in human models of information processing and inhibitory control

Caffeine levels in saliva: associations with psychosocial factors and behavioural effects

The effects of caffeine on two computerized tests of attention and vigilance

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