BIOLOGICAL BASES OF BEHAVIOR
BIOLOGY OF CONSCIOUSNESS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
spend more time in REM sleep and less time in NREM sleep.
|
|
|
spend more time in NREM sleep and less time in REM sleep.
|
|
|
spend a more or less equal amount of time in REM sleep and NREM sleep.
|
|
|
spend more time in stage 4 sleep and less time in REM sleep.
|
Detailed explanation-1: -The correct answer would be option A: spend more time in REM sleep and less time in NREM sleep.
Detailed explanation-2: -The average length of the first NREM-REM sleep cycle is 70 to 100 minutes. The second, and later, cycles are longer lasting-approximately 90 to 120 minutes (Carskadon and Dement, 2005). In normal adults, REM sleep increases as the night progresses and is longest in the last one-third of the sleep episode.
Detailed explanation-3: -REM sleep, through its activation of our central nervous system, might help us get ready to wake back up. This may explain why we spend increasing amounts of time in REM sleep as the night progresses and why we are easier to wake up during this stage.
Detailed explanation-4: -The most consistent alterations associated with normal aging include increased number and duration of awakenings and decreased amounts of deep slow wave (SW) sleep (ie, stages 3 and 4 of non–rapid eye movement (non-REM) sleep). REM sleep appears to be relatively better preserved during aging.
Detailed explanation-5: -Babies can spend up to 50% of their sleep in the REM stage, compared to only about 20% for adults.