In healthy people, both sleepiness and vigilance show a relationship with core body temperature and skin temperature. When core body temperature is high during the daytime, skin temperature is low, which translates into optimal vigilance.
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Coffee is an effective countermeasure to sleepiness for both young and middle-aged people. However, napping is more efficient in young than in middle-aged people, according to a study published in the December 1 issue of the journal SLEEP.
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Multitasking seems to come easier for some and is virtually impossible for others, however new research shows that it is difficult for all in the late night and early morning.
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A new study reported that zolpidem, a drug normally used to treat insomnia, temporarily improved brain function in a patient suffering from akinetic mutism, a condition in which the person is alert but cannot speak or move. The patient was able to communicate, walk, and eat without assistance after receiving the drug for a bout of insomnia.
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Sleepiness and sleep deprivation have long been associated with an increased risk of injury. However, the results of a recent study by a University of Missouri-Columbia researcher suggest that this commonly accepted theory might not be true.
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