Sleep and Dreams

Sleep When we first fall

asleep.First house is the deepest period of sleep.

Blood pressure, heart rate and breathing fall

REM SleepBrain begins to fire furiously

Blood pressure zooms up

Eyes move rapidly from side to side and up and down

Breathing and heart rate are very rapid

The body is paralyzed

This happens every night, four or five times!

REM SleepRapid Eye Movement

Dogs and cats have this after about 30 minutes after falling asleep and it is easy to see them.

You can see the eyeball rolling in the socket

Humans have REM about 90 minutes from falling asleep and happens every 90 min until morning.

REM SleepDreams happen during REMDreams last between 5 to 40 minutesEach REM cycle lasts longer than the previous per night.

Sleep CycleStage 1 – relaxed – Alpha Brain WavesStage 2 – Twilight Stage – alpha waves go awayStage 3 – Drift into deeper sleep – beginning delta wavesStage 4 – Deepest Sleep – Delta Waves – it is now about 1 hour into your sleep. Now you go in reverse back to stage 1….

The Sleep Cycle Before the second hour, you will arrive back at stage 1 but you go into REM sleep. This is when your first dream of the night will happen. (you don’t actually enter the real stage 1, relaxed, until you wake up in the morning.

For the rest of the night you go from Stage 1 REM to Stage 4 and back again.

Your last dream towards the morning will be close to 30 minutes long and you will be more likely to remember that dream than the earlier ones.

NREM Sleep Non-rapid eye movement

Night terrors

Sleepwalking and talking in sleep

Less essential part of sleep

If you are not in REM you are in NREM

Vague, partial images and stories, doesn’t make sense.

The body may be resting (?)

For teens, this is when growth hormone is secreted, this is why teens need more sleep than adults!

Where Is my chocolate bunny? Why am I wearing

a dress? Is my name molly? I am

a ninja.

3 Hypotheses about why we

dream…1. Dreams are used to get the brain

reorganized after a day of work2. Dreams are used to help work out

unsolved problems left over from the day3. Dreams result from electrical

realignments, revising and updating going on in the brain. The brain is trying to make sense of all the information, so it makes up a “story” (dream) to fit them.

Psychology of Dreams

Do you remember what psychologist analyzed dreams to find clues to his patients inner thoughts?

Sigmund FreudHe believed dreams were symbolic expression sof our unconscious conflictsFor Example: If we dream of a fortress, this may really represent a strong-willed father. If we are trying to knock down the fortress in our dreams, then maybe things are not going so well with Dad!

Nightmares

Infrequent

REM

Night Terrors

More vivid and real

During NREM

Because the body isn’t prepared it goes into physical overload, breathing rate increases, the person feels chocked, heart rate extremely high

Causes panic and fear of dying.

Sweeting, nausea,