Other slides in this set

Slide 2

Preview of page 2

Here's a taster:

DEFINITIONS
Infradian Rhythms: Under 24 hours
Circadian Rhythms: 24 hours
Ultradian Rhythms: More than 24 hours…read more

Slide 3

Preview of page 3

Here's a taster:

Sleep Stages AO1
· Sleep stages are within the sleep wake cycle.
· In stages one to four you have NREM (non rapid eye
movement) sleep
· In the 5th Stage you have REM (rapid eye movement)
sleep
· Each sleep cycle lasts approximately 90 minutes…read more

Slide 4

Preview of page 4

Here's a taster:

Sleep Stages AO1
Relaxed, easily woken up, heart Stage 1
rate slows, body temperature
drops.
Stage 2
Stage 3
The metabolic rate is at its Stage 4
slowest and the growth
hormone is being produced Stage 4
Stage 3
Relaxed, easily woken up, heart
rate slows, body temperature
drops.
Stage 2
The brain and eyes are active Stage 5
but your body is paralyzed. This ­ REM
is when you dream sleep…read more

Slide 5

Preview of page 5

Here's a taster:

Sleep Stages AO2
· Is it dreaming sleep?
Dement and Kleitman (1957)
· When participants were woken during REM sleep they were more
likely to report dreaming
· BUT dreams were also recorded in NREM and they weren't always
recorded during REM
· REM therefore might not be dream sleep.
· It might just be called dream sleep to let Psychology theorists
explain dreaming
Hooson and McCarley (1977)
· Dreams are simply a read out of REM's random electrical signals
· Theories of dreaming are based on the wrong assumption that REM
activity is dreaming activity…read more

Slide 6

Preview of page 6

Here's a taster:

Sleep Stages AO2
· Can we change our sleep cycle?
Born et al (1999)
· Participants were told to wake up earlier
· They were found to have more ACTH at the designated
time than normal
· ACTH helps you wake up
· Suggests our sleep cycle can be changed…read more

Slide 7

Preview of page 7
Preview of page 7

Slide 8

Preview of page 8
Preview of page 8

Slide 9

Preview of page 9
Preview of page 9

Slide 10

Preview of page 10
Preview of page 10

Comments

No comments have yet been made

Similar Psychology resources:

See all Psychology resources »See all resources »