psychology

The pattern of physical and behavioral changes that follows a 24 hour cycle, in accordance with the hours of light and darkness.

• REM

• NREM

• circadian rhythm

• ultradian rhythm

The stages of sleep are classified into two distinct basic types characterized by

• body temperature

• breathing rates.

• rapid eye movement vs non-rapid eye movement

• the ability of the sleeper to quickly respond to stimulus

The stages of sleep are differentiated from each other by

• varying levels of adrenaline found in the blood

• varying patterns of brain activity

• whether you are dreaming or not.

• your core body temperature

A hormone released by the pineal gland that increases feelings of relaxation and tiredness

• dopamine

• melatonin

• SCN

• serotonin

During this stage of sleep, you drift in and out of sleep and can be easily awakened.

• Stage 1

• Stage 2

• Stage 3

• Stage 4

During this stage of sleep, muscle activity and eye movements completely stop, and you become difficult to awaken.

• Stage 1

• REM

• Stage 2

• Stage 4

How many sleep stages do we go through 

• 2
• 3
• 4
• 5

A change in bodily function or activity that occurs more often than 24 hourly is referred to as

• ultradian rhythm

• circadian rhythm

• biological rhythm

• infradian rhythm

REM stands for______________, a stage of sleep in which the eyes move rapidly back and forth.

• rapid eye movement

• random episodic memory

• red eye moments

• really eerie movement

TRUE of FALSE: The stage of sleep in which we are most likely to dream is the REM stage.

• TRUE

• FALSE