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However, hypnagogia is also regularly employed in a more general sense that covers both falling asleep and waking up. Indeed, it is not always possible in practice to assign a particular episode of any given phenomenon to one or the other, given that the same kinds of experience may occur in both as people drift in and out of sleep.
“It is not a disease, but a symptom of dementia.” Unfortunately, doctors “don’t really know the cause of this,” he adds. It's possible that sundowning in dementia patients is caused by a ...
The first REM episode occurs about 70 minutes after falling asleep. Cycles of about 90 minutes each follow, with each cycle including a larger proportion of REM sleep. [27] (The increased REM sleep later in the night is connected with the circadian rhythm and occurs even in people who did not sleep in the first part of the night.) [55] [56]
“Try to incorporate one new habit at a time.” When to get help. If you’re struggling with insomnia — either you can’t fall asleep or you can’t stay asleep — seek the help of a sleep ...
One of the important questions in sleep research is clearly defining the sleep state. This problem arises because sleep was traditionally defined as a state of consciousness and not as a physiological state, [14] [15] thus there was no clear definition of what minimum set of events constitute sleep and distinguish it from other states of partial or no consciousness.
About one in 10 people have restless leg syndrome, but the cause is a mystery. ... but when you get in bed the night before, you can’t fall asleep. For some, this can be compounded by a strange ...
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A 2002 study of older adults (age 40–65) in San Diego found 3.1% had complaints of difficulty falling asleep at night and waking in the morning, but did not apply formal diagnostic criteria. [63] Actimetry readings showed only a small proportion of this sample had delays of sleep timing.