Heterocyclic amphetamine derivatives and caffeine on sleep in man
Open accessAbstract
Effects of the heterocyclic amphetamine derivatives, pemoline (20 and 40 mg), prolintane hydrochloride (5 and 10 mg), methylphenidate hydrochloride (10 and 20 mg) and fencamfamine hydrochloride (10 and 20 mg), and of caffeine anhydrous (100, 200 and 300 mg) on sleep, were compared with placebo in six young adults (20-31 years) using electroencephalography for sleep measures and analogue scales for subjective assessments of well-being and sleep quality.The study was double-blind.2 No consistent effect was found with pemoline.3 With prolintane there were no changes in sleep latencies, or in slow wave sleep (SWS).Rapid eye movement (REM) sleep was reduced during the first 2 h after sleep onset.4 With methylphenidate and fencamfamine latencies to sleep onset and to stage 3 sleep were unchanged.The higher dose of each drug delayed the first and subsequent REM periods.Both drugs reduced the duration of REM sleep, and the higher dose of each drug reduced the percentage REM sleep.Methylphenidate also reduced total sleep time (TST).There was no evidence of reduced SWS with either drug.Impairment of sleep was reported with each drug.5 With caffeine there were no changes in latencies to sleep onset or to the first REM period, though in one study with 300 mg subsequent REM periods were delayed.Awake activity and drowsy sleep were increased and TST and SWS were decreased.With 300 mg only, REM sleep was decreased though percentage REM sleep was not altered.Impaired sleep was reported with all doses of caffeine.
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Of the five studies investigating the dose-response relationship, four reported heightened perceptions of sleep disruption with larger caffeine doses.
“Of the fi ve studies [25,26,31,35,37] investigating the dose-response relationship, four [25,26,31,35] reported heightened perceptions of sleep disruption with larger caffeine doses.”
From The effect of caffeine on subsequent sleep: A systematic review and meta-analysis (2023) · cites this paper as [35]
The Results report that participants perceived poorer sleep with caffeine, but not progressively poorer sleep at larger doses. They explicitly say the subjective effect at 200 mg was less pronounced than at both 100 and 300 mg; Table 6 likewise shows no consistent dose-response pattern. This paper cannot establish the citing sentence’s count of four studies. (LLM, conf=0.86)
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Experimental — accuracy not yet measuredDose-dependent reductions in the duration of N3 sleep and REM sleep were identified, with greater reductions occurring at larger caffeine doses.
“Dosedependent reductions in the duration of N3 sleep [35,41] and REM sleep [41] were identi fi ed, with greater reductions occurring at larger doses.”
From The effect of caffeine on subsequent sleep: A systematic review and meta-analysis (2023) · cites this paper as [35]
The Results (page unavailable) report reduced slow-wave sleep at 100, 200 and 300 mg of caffeine, and reduced REM sleep at 300 mg. They do not establish dose-dependent reductions in N3 and REM duration: effects at 200 mg were less marked than at 100 mg, and REM reduction was reported only at 300 mg. (LLM, conf=0.88)
Experimental — accuracy not yet measuredTwo high-risk studies presented sleep staging data for only the first portion of the sleep bout without providing context.
“Two of these studies [35,36] presented sleep staging data for the fi rst portion of the sleep bout (i.e., six and three h, respectively) without providing context for this decision in the introduction or method”
From The effect of caffeine on subsequent sleep: A systematic review and meta-analysis (2023) · cites this paper as [35]
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Cites
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Flagged first, then by citations
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- Authors
- Nicholson, A., & Stone, B.
- Venue
- British Journal of Clinical Pharmacology
- Publisher
- Wiley
- Published
- 1980-02
- Volume
- 9
- Issue
- 2
- Pages
- 195-203
- ISSN
- 0306-5251 (ISSN-L)
- 1365-2125
- PMC
- PMC1429858
- OpenAlex
- W2041996063
- Cited by
- 107
- References
- 15
- Citations by year
- 2025: 2 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 3 · 2020: 3 · 2019: 2 · 2018: 3 · 2017: 1 · 2016: 4 · 2015: 4 · 2014: 3 · 2013: 2 · 2012: 6
- FWCI
- 3.83
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- British Journal of Clinical Pharmacology (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- McDonald's Corporation
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
- Keywords
- pemoline, methylphenidate, caffeine, sleep, REM sleep, slow-wave sleep, sleep latency, total sleep time, stimulants, sleep quality, subjective well-being
- MeSH terms
- Adult, Amphetamines, Central Nervous System Stimulants, Caffeine, Electroencephalography, Humans, Male, Methylphenidate, Norbornanes, Pemoline, Pyrrolidines, Sleep, Sleep, REM
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