Consciousness
Our awareness of ourselves and our environments
Our awareness of ourselves and our environments
SLEEP AND DREAMS
Biological Rhythms
Periodic physiological fluctuations
Circadian Rhythm
The biological clock; regular bodily rhythms (for example, of temperature and wakefulness) that occur on a 24 hour cycle
Periodic physiological fluctuations
Circadian Rhythm
The biological clock; regular bodily rhythms (for example, of temperature and wakefulness) that occur on a 24 hour cycle
DIFFERENCE BRAIN ACTIVITY BETWEEN AWAKE, REM AND NREM
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SLEEP STAGES
Alpha waves
The relatively slow brain waves of a relaxed, awake state.
Delta waves
The large, slow brain waves associated with deep sleep.
Hallucinations
False sensory experiences, such as seeing something in the absence of an external visual stimulus.
Alpha waves
The relatively slow brain waves of a relaxed, awake state.
Delta waves
The large, slow brain waves associated with deep sleep.
Hallucinations
False sensory experiences, such as seeing something in the absence of an external visual stimulus.
SLEEP DEPRIVATION
SLEEP DISORDERS
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Insomnia
Recurring problems in falling or staying asleep.
Recurring problems in falling or staying asleep.
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Narcolepsy
A sleep disorder characterized by uncontrollable sleep attacks.
A sleep disorder characterized by uncontrollable sleep attacks.
![Picture](/uploads/1/0/7/1/107166991/download_1_orig.jpg)
Sleep Apnea
A sleep disorder characterized by temporary cessations of breathing during sleep and repeated momentary awakenings.
A sleep disorder characterized by temporary cessations of breathing during sleep and repeated momentary awakenings.
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Night terrors
A sleep disorder characterized by high arousal and an appearance of being terrified; unlike nightmares, night terrors occur during stage 4 sleep, within two or three hours of falling asleep, and are seldom remembered.
A sleep disorder characterized by high arousal and an appearance of being terrified; unlike nightmares, night terrors occur during stage 4 sleep, within two or three hours of falling asleep, and are seldom remembered.