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The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
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Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
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Polygraphic Recording Procedure for Measuring Sleep in Mice
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Published on: January 25, 2016

Caffeine gum minimizes sleep inertia.

Rachel A Newman1, Gary H Kamimori, Nancy J Wesensten

  • 1Department of Behavioral Biology, Center for Military Psychiatry and Neurosciences Research, Walter Reed Army Institute of Research, Silver Spring, MD 20910-7500, USA. Rachel.Newman@us.army.mil

Perceptual and Motor Skills
|July 9, 2013
PubMed
Summary

Chewing caffeinated gum rapidly reduces sleep inertia, a temporary cognitive impairment after waking from naps. This strategy effectively improves alertness and performance, suggesting caffeine

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Published on: September 22, 2020

Area of Science:

  • Neuroscience
  • Sleep Science
  • Pharmacology

Background:

  • Napping enhances alertness and cognitive function.
  • Abrupt awakening from naps can cause sleep inertia, characterized by temporary performance deficits.
  • Caffeine is a known stimulant that may counteract sleep inertia.

Purpose of the Study:

  • To investigate the efficacy of caffeinated gum in attenuating post-nap sleep inertia.
  • To assess the impact of caffeine on cognitive performance following awakenings from naps at different times.

Main Methods:

  • A double-blind, placebo-controlled crossover study involving 15 healthy adults.
  • Participants received 100 mg caffeine or placebo gum upon awakening at 1 and 6 hours after sleep onset.
  • Cognitive performance was measured using a 5-minute psychomotor vigilance task at various intervals post-awakening.

Main Results:

  • Caffeine gum significantly improved response speed at 12 and 18 minutes post-awakening at the 1-hour nap.
  • Caffeine's beneficial effects on performance were observed at 18 minutes post-awakening following the 6-hour nap.
  • Caffeinated gum demonstrated a rapid attenuation of sleep inertia.

Conclusions:

  • Caffeinated gum is an effective method for rapidly reducing sleep inertia.
  • The findings suggest the involvement of the adenosine receptor system in sleep maintenance and the effects of caffeine.