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Effects of habitual caffeine use and acute ingestion: testing a biobehavioral model.
- Source :
-
Physiology & behavior [Physiol Behav] 1992 Jan; Vol. 51 (1), pp. 131-7. - Publication Year :
- 1992
-
Abstract
- A recently proposed model of the biobehavioral effects of caffeine suggests that acute ingestion impacts physiology and behavior differentially depending on the level of habitual usage of the drug. Acute ingestion and habitual usage are particularly expected to affect arousal and attentional processes. Subjects in the present study were preselected for high and low habitual caffeine use, given caffeine or a placebo, exposed to white noise or no white noise, and asked to perform on several tasks. Included were an arousal/habituation task (pure tones), reaction time, paired associates, anagrams, and vigilance. Electrodermal activity and performance were recorded. As predicted, virtually all effects were on the arousal/habituation and attentional (vigilance) tasks. Both acute ingestion and habitual use increased tonic EDA, and chronic use also reduced phasic responding, especially in the presence of a strong habituating stimulus. Both acute and habitual use also liberalized the vigilance response criterion, in that subjects risked more false alarms in order to attain more hits. In addition, habitual use increased sensitivity and reduced accuracy, and acute ingestion increased vigilance response time in the presence of white noise. Overall, the model was partially supported by these early results, though considerable further research is needed.
- Subjects :
- Adult
Dose-Response Relationship, Drug
Female
Galvanic Skin Response drug effects
Humans
Male
Paired-Associate Learning drug effects
Pattern Recognition, Visual drug effects
Problem Solving drug effects
Psychomotor Performance drug effects
Reaction Time drug effects
Arousal drug effects
Attention physiology
Caffeine pharmacology
Habituation, Psychophysiologic drug effects
Subjects
Details
- Language :
- English
- ISSN :
- 0031-9384
- Volume :
- 51
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Physiology & behavior
- Publication Type :
- Academic Journal
- Accession number :
- 1741439
- Full Text :
- https://doi.org/10.1016/0031-9384(92)90214-m