Sleep Psych

7/31/2019 Sleep Psych

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Sleep

Austin Haire


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What is Sleep?

A natural periodic state of

rest for the mind and body in

which the eyes usually close

and consciousness is

completely or partially lost so

that there is a decrease in

bodily movement and

responsiveness to external

stimuli


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What Does Sleep Do For Me?

Recharges your brain

Repairs cells in body

Releases important hormones

into body Increases rate of cell division

and protein synthesis

Helps us remember and think

creatively May play role in growth process

Controls weight gain


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How Does Sleep Work?

Stage 0: relatively awake and alert.

Brain produces what are known as betawaves, which are small and fast.

As brain begins to relax and slow down,slower waves (known as alpha waves) are

produced. May experience hypnagogic hallucinations.

Common examples of this phenomenoninclude feeling like you are falling or hearingsomeone call your name.

Myoclonic jerk: startling suddenly forseemingly no reason at all (While it mayseem unusual, these myoclonic jerks areactually quite common).


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Stages Cont.

Stage 1: beginning of the sleepcycle (relatively light stage of sleep).

Considered a transition periodbetween wakefulness and sleep.

Brain produces high amplitudetheta waves, (very slow brainwaves).

Lasts only a brief time (around 5-10

minutes). If you awaken someone during this

stage, they might report that theyweren't really asleep.


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Stages Cont.

Stage 2: lasts for approximately 20minutes.

The brain produces bursts of rapid,rhythmic brain wave activity knownas sleep spindles.

Body temperature starts todecrease and heart rate begins toslow.

Stage 3: Deep, slow brain wavesknown as delta waves begin toemerge.

Transitional period between lightsleep and a very deep sleep.


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Stages Cont.

Stage 4: referred to as delta sleep because of

the slow brain waves known as delta waves

that occur during this time.

Deep sleep that lasts for approximately 30

minutes.

Bed-wetting and sleepwalking are most likely

to occur at the end of stage 4 sleep.


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Stages Cont.

Stage 5: Most dreaming occurs during this stage known as rapid eyemovement (REM) sleep.

REM sleep is characterized by eye movement, increased respiration rateand increased brain activity.

Also referred to as paradoxical sleep (while brain and other body systemsbecome more active, muscles become more relaxed).

Dreaming occurs because of increased brain activity.

Voluntary muscles become paralyzed.


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How Much Sleep Does One Need?

Amount of sleep

needed daily

depends on age

Babies need the

most, almost 16

hours

People over 65 need

about 6 hours


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Are There Effects of Oversleeping?

Diabetes

Obesity

Headaches Back Pain

Depression

Heart Disease Higher Death Rate


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What About Too Little Sleep?

Cancer

Fatigue

Hypertension

Diabetes

Obesity

Decreased

productivity

Not enough = death


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What Are Dreams?

A series of images, ideas, emotions, and

sensations occurring involuntarily in the mind

during certain stages of sleep.

A dream can include any of the images, thoughts

and emotions that are experienced during sleep.

Dreams can be extraordinarily vivid or very

vague; filled with joyful emotions or frighteningimagery; focused and understandable or unclear

and confusing.


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What are Possible Sleep Disorders?

Parasomnia: makes oneperform unnatural sleepmovements, even though oneis asleep

Insomnia: the inability to getthe amount of sleep you needto wake up feeling rested andrefreshed. Often a symptom of

another problem (stress,anxiety, depression, orunderlying health condition).


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Sleep Disorders Cont.

Restless legs syndrome (RLS):causesan almost irresistible urge to moveyour legs (or arms). The urge to moveoccurs when resting or lying down,usually due to uncomfortable, tingly,aching, or creeping sensations.

Sleep apnea: common sleep disorderin which your breathing temporarilystops during sleep due to blockage ofthe upper airways. These pauses inbreathing interrupt your sleep,

leading to many awakenings eachhour.


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How Do I Know If I Have a Disorder?

Do you . . .

feel irritable or sleepy during the day?

have difficulty staying awake when sitting still, watching televisionor reading?

fall asleep or feel very tired while driving?

have difficulty concentrating?

often get told by others that you look tired?

react slowly?

have trouble controlling your emotions?

feel like you have to take a nap almost every day?

require caffeinated beverages to keep yourself going?

If you answered yes to any of the previous questions, you may havea sleep disorder


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Have Studies Found Anything About

Sleep?

Blind people still dream

2% of teenagers still wet the bed

12% of people dream in black and white

Men dream of other men 70% of the time

You are paralyzed while you sleep

Your dreams respond to external stimuli

Quitters have more vivid dreams You forget 90% of your dream 10 minutes after

you wake


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Is There Sleep Hygiene?

Yes, and to help your sleep cycle, follow these

steps:

Do not take naps during the day

Sleep when you are actually sleepy

Get into a routine

Associate bed with sleep Do not create anxiety about not sleeping


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QUESTIONS?

Documents

Sleep Psych