Consciousness, Sleep and Dreams

Definition A circadian rhythm is an internal biological clock that regulates the sleep-wake cycle...

Definition The collective unconscious is the deepest layer of the human psyche, containing univer...

Definition Consciousness is the state of being aware - of ourselves, our surroundings, our though...

Definition In psychology, a dream refers to a series of images, thoughts, emotions, or sensations...

Definition Carl Jung's Theory of Dreams posits that dreams are a form of communication from the u...

Definition Freud's Theory of Dreams suggests that dreams are a manifestation of unconscious desir...

Definition A hypnagogic state is the transitional phase between wakefulness and sleep. During thi...

Definition A hypnopompic state is the transitional phase between sleep and wakefulness that occur...

Definition Hypnosis is a psychological state characterized by focused attention, increased sugges...

Definition Insomnia is a sleep disorder characterized by difficulty falling asleep, staying aslee...

Definition A meditative state, in psychology, refers to a mental state characterized by focused a...

Definition Parasomnia refers to a category of sleep disorders characterized by unusual behaviors,...

Definition Rapid eye movement (REM) sleep is a stage of sleep characterized by quick, darting mov...

Definition Sleep is a naturally occurring state of mind and body characterized by reduced physica...

Definition Sleep paralysis is a temporary inability to move or speak that occurs during the trans...

Definition The stages of sleep refer to the distinct phases that occur during a sleep cycle, whic...

Definition Wakefulness refers to a state of consciousness where an individual is fully aware of t...