l-Theanine and caffeine improve task switching but not intersensory attention or subjective alertness

Costs of a predictible switch between simple cognitive tasks.

Robert D. Rogers, Stephen Monsell · Journal of Experimental Psychology General · 1995 · 3.1K citations

Social Sciences, Behavioral Sciences, Psychology +13

The use of analogue scales in rating subjective feelings

Alyson J. Bond, Malcolm Lader · British Journal of Medical Psychology · 1974 · 2K citations

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Green tea composition, consumption, and polyphenol chemistry

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Parieto-occipital ∼1 0Hz activity reflects anticipatory state of visual attention mechanisms

John J. Foxe, Gregory V. Simpson, Seppo P. Ahlfors · Neuroreport · 1998 · 564 citations

Medicine, Neuroscience, Psychology +16

The effects of low doses of caffeine on human performance and mood

Harris R. Lieberman, R. J. Wurtman, Gail G. Emde et al. · Psychopharmacology · 1987 · 419 citations

Social Sciences, Pharmacology, Psychology +11