Chapter 5: Consciousness Flashcards
Consciousness
A person’s subjective experience of the world and the mind. eg/Alertness, self-awareness etc..
minimal consciousness
low-level sensory awareness and responsiveness that occurs when the mind inputs sensations and may output behaviour
full consciousness
you know and are able to report your mental state
cognitive unconscious
the processing of perception, memory, learning, thought, and language without being aware of it
circadian rhythm
the physical, mental, and behavioral changes an organism experiences over a 24-hour cycle, Light and dark have the biggest influence on circadian rhythms
suprachiasmatic nucleus
affects alertness and sleep by causing the pineal gland to decrease melatonin production in the morning and increase production in the evening
sleep stages
patterns of brain waves and muscle activity that are associated with different types of consciousness and sleep
the sleep cycle
patterns of shifting through all the sleep stages over the course of the night
beta and alpha waves
awake and alertness generates beta waves and drowsy and relaxed generates alpha waves
stage 1: falling asleep
breathing slows down, may encounter hypnagogic hallucinations, brain waves become slower and irregular (4-7Hz)
stage 2: sleep
beginning of sleep, sleep spindles and k complexes occur here
stage 3/4: deep sleep
deeper sleep state where brain activity slows in delta waves (3 Hz)
stage 5: REM sleep
deepest stage of sleep, the brain becomes more active (BW 25Hz) and eyes start to moving rapidly, REM, dreams take place durning REM sleep
What happens durning REM sleep
- heart rate rises and breathing becomes rapid
- '’sleep paralysis’’ occurs when brainstem blocks motor cortex’s messages/muscles don’t move
- genitals are aroused stay that way after REM
paradoxical sleep (REM)
when the brain is active but the body is immobile