Unit 2 - Extra Terms Flashcards
Cognitive Neuroscience
Interdisciplinary study of the brain activity linked with cognition (including perception, thinking, memory, and language)
Dual Processing
Principle that information is often simultaneously processed on separate conscious consciousness and unconscious tracks.
Brain Lesion
Destroys brain tissue to study animal behaviors.
Plasticity/Neuroplasticity
Brain’s ability to modify itself after some type of injury or illness.
Left Hemisphere Specialties
Reading, writing, speaking, mathematics, comprehension skills, and language.
Right Hemisphere Specialties
Non-verbal abilities, facial recognition, patterns.
Circadian Rhythm
24-hour cycle of wakefulness and sleep.
Suprachiasmatic Nucleus
Light triggers the suprachiasmatic nucleus to decrease melatonin (hormone that regulates the sleep-wake cycle) from the pineal gland and increase it at night fall.
Sleep Stages
Every 90 minutes; cycle of four distinct sleep stages (about 4 or 5 times per night). During each cycle each stage of REM becomes longer.
NREM Sleep; Stages 1-3
Hypnagogic state, drifting thoughts, falling sensations; mild hallucinations, light sleep, daydreaming (stages 1-2); sleep spindles/bursts of activity begin during stage 2; sleepwalking and bedwetting during stage 3.
Delta Waves
Large, slow waves of deep sleep
REM Sleep Stage
Paradoxical sleep; muscles are relaxed; body systems such as the brain is active; fast and regular beta waves; much like awake-aroused state; Rapid Eye Movements (REM) and reports vivid dreams.
Sleep deprivation
Can cause a depressed immune system
Freud’s Wish Fulfillment Theory
Dreams provide a psychic safety valve to discharge unacceptable feelings.
Freud’s Manifest v. Latent Content
Manifest - Remembered story line; Latent - underlying meaning
Information Processing Theory
Dreams may help sift, sort, and fix a day’s experiences in our memory.
Cognitive-Development Theory
Reflects dreamers’ cognitive development - their knowledge and understanding (Cognitive Perspective)
Activation-Synthesis Theory
Brain engages in a lot of random neural activity. Dreams make sense of this activity (Neuroscience Perspective)
REM Rebound
When deprived of REM sleep and then allowed to sleep, we show increased REM sleep.
Insomniacs
Have a normal desire for sleep, but is unable to and feels tired during the day; persistent problems in falling or staying asleep.
Narcolepsy
Uncontrollable sleep attacks; linked to low levels of orexin.
Sleep Apnea
Cessation of breathing during sleep; momentary reawakenings
REM Sleep Behavior Disorder
Acts out dreams; can be dangerous due to the possibility of injuring the sleeper or the person next to them.
Night Terrors
Intense fear accompanied by physiological reactions; occurs during stage 3
Nightmares
A vivid dream that is frightening; occurs during stage 4 (REM)
Somnambulism
Sleepwalking