Brain Waves
Sleep Stages
Am I Conscious?
Sleep Gone Wrong
Altered States
100

Deep sleep

What are delta waves?

100

Even though the eyes are closed, they can be seen moving quickly.

What is REM?

100

High levels of sensory awareness, thought, and behavior.  

Wakefulness

100

Inability to fall asleep or remain asleep.

What is insomnia?

100

Psychologist famous for book The Interpretation of Dreams; believes dreams represent our unconscious desires.

Who is Sigmund Freud?

200

Wide awake

What are beta waves?
200

Sometimes considered restorative sleep stage.

What is Stage 3/4?

200

Biological rhythms that occurring once every 24 hours.

What are circadian rhythms?

200

Terrifying dream during NREM.

What is a night terror?

200

Dream theory stating dreams are by products of random neural firing in the pons.

What is the Activation Synthesis theory/hypothesis?

300

Crossing the threshold between awake and asleep

What are alpha waves?

300

Stage between awake and asleep

What is Stage 1?

300

Endocrine structure located inside the brain that releases melatonin.

Pineal Gland

300

Interrupted breathing during sleep, often times resulting in snoring and sometimes treated with a CPAP machine.

What is sleep apnea?

300

A state of heightened suggestibility, deep relaxation, and highly focused attention.

What is hypnosis?

400

REM sleep

What are beta waves?

400

We spend roughly half our time in this stage.

What is Stage 2?

400

Hormone that acts upon the hypothalamus to control the sleep/wake cycle and body responses to the annual seasons cycle.

What is melatonin?

400

Falling instantly into REM sleep from a fully awake state.

What is narcolepsy?

400

Chemicals that affect mental processes and behavior by their affect on the brain.

What are psychoactive drugs?

500

Distinguishing characteristic of Stage 2 sleep

What are sleep spindles or k complexes?
500

Primary dreaming stage

What is REM?

500

The brain’s clock mechanism is located in an area of the hypothalamus 

Suprachiasmatic Nucleus

500

Lack of paralysis during REM.

What is RBD?  (REM Behavior Disorder)

500

According to Freud, the actual, literal content of a dream.

What is the manifest content?

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