Clinical Trial Show doi: 10.1159/000054958. Affiliations
Clinical Trial Effects of caffeine on topographic quantitative EEGMartin Siepmann et al. Neuropsychobiology. 2002. AbstractDespite the widespread use of caffeine as a central nervous stimulant, the central pharmacodynamic properties of the drug have not yet been conclusively evaluated in humans. The present study was undertaken to assess the acute effects of caffeine on measures of topographical quantitative electroencephalogram (EEG) in normal subjects. Ten healthy male volunteers (mean age +/- SD 25 +/- 4 years) received placebo and 200 mg of caffeine as powder with oral water solution (caffeine amount = 2 cups of coffee) under randomized, double-blind crossover conditions on two different occasions. Before administration and 30 min afterwards, a 17-channel quantitative EEG was recorded during relaxation with eyes open and closed (15 min each). Caffeine caused a significant reduction of total EEG power at fronto-parieto-occipital and central electrode positions of both hemispheres when the subjects kept their eyes open. Absolute power of the slow and fast alpha and slow beta activities was diminished in various regions of the brain (p < 0.05). The effect was more pronounced with the subjects keeping their eyes open than with eyes closed. It can be concluded that quantitative EEG is a sensitive method to assess the effects of psychostimulants on the human brain. Therefore, in pharmaco-EEG studies, environmental factors such as caffeine have to be excluded. Copyright 2002 S. Karger AG, Basel Similar articles
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Why can you not have caffeine before an EEG?Caffeine caused a significant reduction of total EEG power at fronto-parieto-occipital and central electrode positions of both hemispheres when the subjects kept their eyes open. Absolute power of the slow and fast alpha and slow beta activities was diminished in various regions of the brain (p < 0.05).
Can I drink caffeine before EEG?Avoid consuming any food or drinks containing caffeine for 8 to 12 hours before the test. Follow any directions your healthcare provider gives you about reducing your sleep the night before the test. Some EEG tests require that you sleep through the procedure, and some do not.
Does caffeine affect brain waves?In conclusion, all doses of caffeine modified the global power of the brain as well as the number of peaks on the frequency range of 0.5-4 Hz. The higher dose of caffeine modified the percentage of alpha 1, alpha2, beta, delta and theta2 waves compared to the control group.
What should you not do before an EEG?Other precautions. Wash your hair the night before or the day of the test, but don't use conditioners, hair creams, sprays or styling gels. ... . If you're supposed to sleep during your EEG , your health care provider might ask you to sleep less or avoid sleep the night before your EEG .. |
What happens if you drink caffeine before an EEG?
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