A reported sense of being awake and responsive. It can change independently of objective task performance or later sleep.
Also called Feeling awake
These qualitative descriptions preserve the reported direction and setting. They do not assign a universal intensity score.
Participants reported greater alertness after caffeine in the cited crossover trial. Source
Each relationship keeps its participants and their roles together. Source details explain what the connection supports.
No sourced relationships have been assessed for this concept yet.
Tagged articles and participants in the relationships above. A shared tag alone does not establish a causal effect.
Supporting reading for this original editorial definition. Independent editorial review has not been recorded.
Caffeine with L-theanine improved some attention-task outcomes in 27 healthy volunteers.
Limitation Small, short-term study; selected laboratory tasks do not establish everyday productivity or long-term benefit. Authors were affiliated with Unilever.
Funding / disclosures Funding not assessed; author affiliations include Unilever.
Source in Caffeine