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....
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Heliyon |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844024175020 |
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| author | Mateja Lesar Jakob Sajovic Dušanka Novaković Maša Primožič Eva Vetrih Martin Sajovic Anja Žnidaršič Peter Rogelj Andreas Daffertshofer Zoran Levnajić Gorazd Drevenšek |
| author_facet | Mateja Lesar Jakob Sajovic Dušanka Novaković Maša Primožič Eva Vetrih Martin Sajovic Anja Žnidaršič Peter Rogelj Andreas Daffertshofer Zoran Levnajić Gorazd Drevenšek |
| author_sort | Mateja Lesar |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-ae9d1170fbab4f088134e26854217f7d |
| institution | Kabale University |
| issn | 2405-8440 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj-art-ae9d1170fbab4f088134e26854217f7d2025-02-02T05:27:48ZengElsevierHeliyon2405-84402025-01-01112e41471The complexity of caffeine's effects on regular coffee consumersMateja Lesar0Jakob Sajovic1Dušanka Novaković2Maša Primožič3Eva Vetrih4Martin Sajovic5Anja Žnidaršič6Peter Rogelj7Andreas Daffertshofer8Zoran Levnajić9Gorazd Drevenšek10Faculty of Information Studies in Novo mesto, Slovenia; Corresponding author.University Medical Centre Ljubljana, SloveniaFaculty of Information Studies in Novo mesto, SloveniaFaculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, Koper, SloveniaUniversity Medical Centre Ljubljana, SloveniaHigher Vocational School Kranj, SloveniaFaculty of Organizational Sciences, University of Maribor, SloveniaFaculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, Koper, SloveniaFaculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, the NetherlandsFaculty of Information Studies in Novo mesto, SloveniaThe Institute of Pharmacology and Experimental Toxicology, Faculty of Medicine, University of Ljubljana, SloveniaWhy 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.http://www.sciencedirect.com/science/article/pii/S2405844024175020 |
| spellingShingle | Mateja Lesar Jakob Sajovic Dušanka Novaković Maša Primožič Eva Vetrih Martin Sajovic Anja Žnidaršič Peter Rogelj Andreas Daffertshofer Zoran Levnajić Gorazd Drevenšek The complexity of caffeine's effects on regular coffee consumers Heliyon |
| title | The complexity of caffeine's effects on regular coffee consumers |
| title_full | The complexity of caffeine's effects on regular coffee consumers |
| title_fullStr | The complexity of caffeine's effects on regular coffee consumers |
| title_full_unstemmed | The complexity of caffeine's effects on regular coffee consumers |
| title_short | The complexity of caffeine's effects on regular coffee consumers |
| title_sort | complexity of caffeine s effects on regular coffee consumers |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024175020 |
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