What is consciousness Awareness of ourselves and environment Different States Cognitive Neuroscience Brain activity link with mental processes Dual Processing 2 track Mind Proceed on a conscious and unconscious track ID: 382941
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Slide1
ConsciousnessSlide2
What is consciousness?
Awareness of ourselves and environment
Different States?
Cognitive Neuroscience
Brain activity link with mental processesSlide3
Dual Processing: 2 track Mind
Proceed on a conscious and unconscious track
Blindsight
:
person can respond to visual stimuli without experiencing it
Selective Attention
Focus of conscious awareness on a particular stimuli
Inattential
blindness: failing to see visible objects when attention is directed else where
Change blindness: failing to notice changes in environmentSlide4
Sleep & Dreams
Circadian Rhythm – internal biological clock
Sleep – periodic, natural, reversible loss of conscious
Sleep stages
REM (rapid eye movement)
Vivid dreams , muscles relaxed but other systems active
Alpha waves – slow brain waves; relaxed awake state
Hallucinations – false sensory experiences
Delta waves – large, slow brain waves; deep sleepSlide5
REM
About 10
mins
Heart rate increases
Rapid Breathing
Eyes dart (vivid dreams)
Occurs every 90
minsSlide6
Sleep Theories
What affects our sleep patterns?
Light in the morning & darkness (creates melatonin)
Impacts our circadian rhythm
Sleep theories
Sleep protects
Recuperates
Restores and rebuilds memories
Feeds creative thinking
Supports growthSlide7
Sleep Deprivation
Predicts depression
More likely to get sick and be overweight
Insomnia
persistent problems falling asleep / staying asleep
Narcolepsy
Sudden attacks of overwhelming sleepiness lasting less than 5
mins
Sleep Apnea
Stop breathing during sleep
Night Terror
Children talk, walk, appear terrifiedSlide8
Dreams & Hallucinations
Outside environment may be included in our dreams
Why?
Satisfy own wishes
Consolidate memories
Develop & preserve neural pathways
Neural static
Cognitive development
REM rebound
Freud
Manifest content has symbolic meaning (latent content)Slide9
Hypnosis
One person suggest to another that certain perceptions, feelings, thoughts spontaneously occur
Posthypnotic suggestions
DissociationSlide10
Drugs & Consciousness
Psychoactive drugs – chemicals that alter perceptions and moods
Addiction – person craves & uses substance despite its adverse consequences
Tolerance – diminishing effect of medicine
Increasing the dose
Withdrawal – undesirable side effects
Physical dependence – physical pain & dependence
Psychological dependence – relieve negative emotionsSlide11
Drugs & Consciousness
Alcohol
Barbiturates
Narcotics
Stimulant
Nicotine
Amphetamine
Cocaine
Methamphetamine
Ecstasy
Hallucinogens
LSD
MarijuanaSlide12