20.500.12556/DiRROS-28946 The complexity of caffeine’s effects on regular coffee consumers Why does coffee wake us up? Is it because it contains caffeine, or because we are used to it waking us up after drinking it? To answer this question, we recruited twenty habitual coffee drinkers who received either caffeinated or decaffeinated coffee (placebo) in a double-blind, randomized fashion. The two substances were identical except for the presence of caffeine. We measured cognitive performance, cardiovascular responses, and whole-head EEG during rest and during an auditory-oddball task. The same measurements were done before and after ingestion. We expected to find significant differences between caffeine and placebo groups across the outcome measures. However, except for the resting-state alpha power, changes due to ingestion in physiological responses and in cognitive functioning were not significantly different between the two groups. Actually, only one of the three cognitive measures was found to be significantly altered by the ingestion. These findings suggest that regular coffee consumers respond to coffee-like beverages independently of the presence of caffeine. caffeine decaffeine ERP event related potentials (ERP) electroencephalography (EEG) EEG auditory odball cognitive performance resting state EEG kava kofein brez kofeina elektroencefalografija EEG naloge slušne pozornosti z dogodkom povezani potenciali (ERP) EEG v mirovanju kognitivna sposobnost true false true Angleški jezik Slovenski jezik Neznano 2026-04-14 12:50:27 2026-04-14 12:50:27 2026-04-15 03:57:38 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Opis vira z dne 28. 1. 2025; str. 1-14 issue 2, [article no.] e41471 Vol. 11 Jan. 2025 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 616.8 2405-8440 10.1016/j.heliyon.2024.e41471 224159235 RAZ_Lesar_Mateja_2025.pdf RAZ_Lesar_Mateja_2025.pdf 1 3BDE6386CA205E740A28FD094B8FD966 fb55045c5559b9cf976a750ce6fb7ddce7cd526a0daae1732b9c73dd83367903 de3708ea-37ef-11f1-9cc3-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=43177 https://www.cell.com/heliyon/fulltext/S2405-8440(24)17502-0?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS2405844024175020%3Fshowall%3Dtrue 1 c2418015-37ef-11f1-9cc3-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=43176 Univerzitetni klinični center Ljubljana 0 0 0