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Sleep Medicine

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Navigational brain cells that help sense direction are as electrically active during deep sleep as they are during wake time, scientists have discovered. Such information could be useful in treating navigational problems associated with Alzheimer's disease and other neurological disorders.

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A team of neuropsychologists at Saarland University have shown that even a brief sleep of 45 to 60 minutes can significantly improve retention of learned material in memory

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People exposed to prolonged periods of shortened sleep have significant increases in blood pressure during nighttime hours, researchers report.

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Night owls are more likely to develop diabetes, metabolic syndrome and sarcopenia than early risers, even when they get the same amount of sleep, according to a new study. The study examined the difference between night and morning chronotypes, or a person's natural sleep-wake cycle. Staying awake later at night is likely to cause sleep loss, poor sleep quality, and eating at inappropriate times, which might eventually lead to metabolic change.

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Think twice the next time you don’t get as much sleep as you need: A new study suggests that missing just 30 minutes of shuteye during weeknights could boost your weight and disrupt your metabolism.

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Long the stuff of science fiction, the disembodied 'brain in a jar' is providing science fact for researchers, who by studying the whole brains of fruit flies are discovering the inner mechanisms of jet lag.  Researchers present the first real-time imaging of intact circadian neural networks and demonstrate how light shifts disrupt biological clocks.

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TSGQ Sleep Diary

This sleep diary should be completed during the two weeks immediately prior to a multiple sleep latency test (MSLT) or a maintenance of wakefulness test (MWT). The diary consists of fourteen 24 hour graphs.  Please bring the completed diary with you when you attend the overnight study before your MSLT or MWT.

At bedtime, just before turning out the lights, record the following daily activities using the appropriate symbols at the appropriate time (Note: MN - midnight; MD – midday)

F Food
C Caffeine one “C” for each cup of tea, coffee or Coke
A Alcohol one “A” for each glass
NB Beginning of nap
NE End of nap
M Medication (ie: sleeping pill, sedative, regular medication)
Time you turned out lights to go to sleep

After your final morning wakening, but before getting out of bed, record the following:

  • Draw a thick line over the times you were asleep overnight.  Leave gaps for any time you were awake.
  • Mark the time at which you finally awoke and did not return to sleep with the appropriate symbol:
S Woke spontaneously
AL Woken by alarm or other stimuli
Time you actually got out of bed
  • In column A, estimate the time (in minutes) that it took to fall asleep after lights out
  • In column B, estimate the total amount of time spent awake (if at all) during the night (AFTER initially falling asleep and BEFORE finally waking)
  • Use the comments section below the sleep graphs to note any events which may affect your sleep

Download Sleep Diary (114kb)

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