Chapter 6 Flashcards
What is consciousness?
Consciousness is the awareness of one’s surroundings, thoughts, and self.
Name two components of conscious awareness.
States of consciousness and contents of consciousness.
What is inattentional blindness?
Failure to notice things around us when we are not paying attention to them.
What brain area is involved in attention and conscious awareness?
The thalamus, specifically the intralaminar and midline nuclei.
What is preconsciousness?
A level of awareness where information can become readily available to consciousness if necessary.
What is the adaptive theory of sleep?
The theory that organisms sleep for self-preservation, keeping away from predators.
What controls our sleep/wake cycle?
The suprachiasmatic nucleus (SCN) of the hypothalamus.
How long is a typical sleep cycle?
Each cycle lasts 90-100 minutes.
Which stage of sleep is associated with dreaming?
REM (Rapid Eye Movement) sleep.
What is the activation-synthesis model of dreaming?
The theory that dreams result from the brain trying to make sense of random neural activity.
Define insomnia.
Difficulty falling asleep, staying asleep, or waking up too early.
What is narcolepsy?
A disorder causing excessive daytime sleepiness, often resulting in sudden REM sleep episodes.
How does hypnosis affect consciousness?
It induces an altered state with heightened suggestibility, deep relaxation, and intense focus.
Name a brain region associated with pain reduction during hypnosis.
The anterior cingulate cortex.
What is mindfulness meditation?
A form of meditation focusing on staying in the present moment without judgment.