Influence of caffeine on information processing stages in well rested and fatigued subjects
Lorist MM, Snel J, Kok A
Psychopharmacology · 78 citas
Etiquetas de revisión
Financiación no declaradaDatos neutrales que nuestra revisión registró sobre cómo se hizo este estudio. Describen el método, nunca si nos gusta el resultado.
Cómo se estudió
- Diseño
- Ensayo controlado aleatorizado (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación no declarada
Publicación
- Publicado
- 1994-01-01 · Psychopharmacology (Berl) · vol. 113 · número 3-4 · págs. 411–421
- Editorial
- Springer Science+Business Media
- Citado
- 133 citas · más que el 93% de estudios similares · 3.2× el promedio de su campo
- Impacto
- Entre el 10 % más citado de su campo
- Referencias
- 58 trabajos
- Acceso
- De pago
- Áreas de investigación
- Coffee research and impacts · Sleep and Work-Related Fatigue · Human-Automation Interaction and Safety
- Palabras clave
- caffeine, information processing stages, fatigue, choice reaction time, stimulus degradation, stimulus-response compatibility, temporal uncertainty, encoding, response selection, motor preparation, event-related potentials, cortical arousal, perceptual sensitivity
- MeSH
- saliva, humans, fatigue, caffeine, electroencephalography, double-blind method, affect, mental processes, visual perception, reaction time, evoked potentials, visual, adolescent, adult, female, male
3 autores
- Monicque M. Lorist🇳🇱University of Amsterdam
- J. Snel🇳🇱University of Amsterdam
- Albert Kok🇳🇱University of Amsterdam
Resumen
El texto original del estudio, en el idioma en que se publicó.
The effects of caffeine on different information processing stages were examined by using choice reaction time tasks. Independent variables were stimulus degradation, stimulus-response compatibility, time-uncertainty, state of the subject, and caffeine treatment. The task variables were assumed to affect the following processing stages; encoding, response selection and motor preparation, respectively. A 200 mg dose at the beginning of the experiment and a maintenance dose of 50 mg caffeine or lactose half-way through the session were administered to well rested and fatigued subjects, double-blind and deceptively. Behavioural measurements, event-related potentials (ERPs) and mood questionnaires were used to assess caffeine effects. The data showed that caffeine shortened reaction time. This effect showed an interaction with stimulus degradation and time uncertainty. In addition, ERP results supported the view that caffeine increases cortical arousal and perceptual sensitivity. Stimulating effects of caffeine were mainly located at input and output stages of the information processing system. Central processes were unaffected by caffeine. Fatigued subjects showed larger improvements in performance after caffeine than well-rested subjects. The results also indicated that caffeine effects were not stimulating in all subjects: 6 out of 30 subjects did not show arousing effects of caffeine.
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