POWERPOINT 4 - CHAPTER 6D - SLEEP ACROSS THE LIFESPAN.pptx

SLEEP ACROSS THE LIFESPAN Chapter 6D  DOT POINT 3 Differences in, and explanations for, the demands for sleep across the life span, with reference to total amount of sleep and changes in a typical pattern of sleep (proportion of REM and NREM) SLEEP ACROSS THE LIFESPAN People experien...

SLEEP ACROSS THE LIFESPAN Chapter 6D  DOT POINT 3 Differences in, and explanations for, the demands for sleep across the life span, with reference to total amount of sleep and changes in a typical pattern of sleep (proportion of REM and NREM) SLEEP ACROSS THE LIFESPAN People experience many changes in the way they sleep across the lifespan. These include:  Sleep onset (at what time do we begin sleep)  Sleep duration (total amount of sleep)  Awakenings during sleep (how often we wake while sleeping)  Proportion of REM sleep (% of time spent in REM)  Proportion of NREM sleep (% of time spent in NREM) SLEEP PATTERNS ACROSS THE LIFESPAN TRENDS SEEN IN GRAPH  The total amount of sleep decreases as a person ages (16 to 6 hours)  The total amount of NREM sleep decreases as a person ages (8 hours to 4.5 hours)  The total amount of REM sleep decreases as a person ages (8 hours to 1.5 hours)  The percentage of REM sleep decreases as a person ages (50% to 20%)  However:  The percentage of NREM sleep increases as a person ages (50% to 80%)  As a general rule, REM sleep helps to restore the mind (brain and cognitive development), while NREM sleep helps to restore the body (tissue and cells replacement)  Therefore, increases REM sleep is evident in babies and people who are undergoing emotional stress  People will spend more time in NREM sleep after physical exertion, such as after completing a marathon  HIGHLIGHTING  Read table 1, 2 and 3 p307 - 308 and highlight.  Students to create an abbreviated table of the important points as follows: Age Group Characteristi Explanation Healthy Average cs of sleep sleep sleep requirement s Neonatal (1-15 days)