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L-theanine and caffeine improve attention in sleep-deprived adults
High-dose L-theanine–caffeine combination improves selective attention measures in sleep-deprived adults through enhanced hit rates, reaction time, and P3b event-related potential components. A double-blind, placebo-controlled crossover study demonstrated significant neurobehavioural and neurophysiological improvements in a visual discrimination task.
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Summary
High-dose L-theanine–caffeine combination improves selective attention measures in sleep-deprived adults through enhanced hit rates, reaction time, and P3b event-related potential components. A double-blind, placebo-controlled crossover study demonstrated significant neurobehavioural and neurophysiological improvements in a visual discrimination task.
Tags
l-theanine · caffeine · sleep-deprivation · attention · erp · cognitive-performance
Key entities
Gayani S. Nawarathna (person, 0.95) · Dewasmika I. Ariyasinghe (person, 0.95) · Tharaka L. Dassanayake (person, 0.95) · University of Peradeniya (organization, 0.95) · Cambridge University Press (organization, 0.95) · British Journal of Nutrition (organization, 0.95) · University of Newcastle (organization, 0.95) · electroencephalogram (technology, 0.9) · event-related potential (technology, 0.9) · selective attention (concept, 0.95) · sleep deprivation (concept, 0.95) · Sri Lanka (location, 0.9) · Australia (location, 0.9)
Classification
analysis · language en · status final
Provenance
claude-haiku-4-5 via @stacklist/be@0.1.0, confidence 0.85, 18 Aug 2026