Consciousness Flashcards
What is consciousness
subjective awareness of the world and ourselves
What did William James say about consciousness
conciseness does not appear chopped up in bits… it flows (uses the metaphor of a river/stream)
Consciousness arises from __________ processes
- “the mind is what the ________ does”
brain
What is the hard problem of consciousness
we don’t know how perception arises; it is said physical experience leads to perception, but how does this perception actually occur
What is infradian rhythm
more than a day-long (>day) cycle
- ie. menstrual cycle
What is ultradian rhythm
less than a day-long (<day) cycle
- ie. heartbeat
What is circadian rhythm
the 24 hour cycle of the body
What is sleep/biological rhythm impacted by mostly
light
What alternative can cause problems in sleep/biological rhythm
artificial light (like smartphones)
Where does the retina relay light info to
the suprachiasmatic nuclei
Where does the suprachiasmatic nuclei interact with
the pineal gland
What does the pineal gland release
melatonin
What is melatonin
sleep hormone
What are endogenous rhythms
internally produced rhythms
- ie. cave study
Which type of brain wave is responsible for high cognitive functioning
gamma waves
What type of brain wave is responsible for alerted waking state
beta waves
Which type of brain wave is responsible for very relaxed state
alpha waves
Which type of brain wave is responsible for drowsiness and drifting into sleep
theta waves
Which type of brain wave is responsible for deep sleep
delta waves
What are the stages of sleep
- brief, transitional beta waves
- mixed EEG
- start of slow waves (delta)
- increasing delta waves
- EEG similar to being awake; due to dreaming brain activity
Why do we sleep?
preserve and protect
restore and repair
memory consolidation
problem-solving
growth and development
What happens during sleep deprivation
impaired cognition, relationship problems, irritability, depressed immunity, weight gain, accidents, etc.
What are some components of good sleep hygiene
use bed only for sleep
go to bed only when tired
exercise early in the morning
create good sleep environment
reduce stress where possible
get up at same time daily
avoid alcohol/caffeine before bed
avoid technology before bed
What are dreams
electrochemical events during sleep that involve the brain stem, forebrain, and eyes
