TODAY
What are the stages of sleep?
! Why do we sleep?
! What are the sleep disorders?
! Why do we dream?
!
!
What are the classes of psychoactive drugs, and the effects of each?
DEFINITION
!
Consciousness
! Awareness
! Subjective
experience
SLEEP
!
EEG test
SLEEP
SLEEP
!
Stage 1 sleep
! Hypnic jerks
SLEEP
!
Stage 2 sleep
SLEEP
!
Stages 3 & 4
! Sleepwalking
SLEEP
!
REM sleep
! Rapid Eye Movement
! “paradoxical sleep”
! Dreaming
SLEEP
SLEEP
!
Azumio Inc – “Sleep Time”
SLEEP
SLEEP
!
Functions of sleep
! Restorative theory
" Rest and repair the body and mind
" Supported by effects of sleep deprivation
SLEEP
Spring Time Shift
Fall Time Shift
4800
3400
4600
Accident Rate
Accident Rate
3200
3000
2800
2600
2400
4400
4200
4000
3800
2200
3600
2000
3400
Monday
BEFORE the shift Monday
AFTER the shift Monday
BEFORE the shift Monday
AFTER the shift SLEEP
!
Functions of sleep
! Restorative theory
" Rest and repair the body and mind
" Supported by effects of sleep deprivation
" REM-Rebound
! Circadian
rhythms theory
" Sleep helps us survive
! Facilitation
of learning
SLEEP
!
Scullin & McDaniel (2010)
SESSION 1
9:00 AM
9:00 PM
SESSION 2
Immediate 9:00 PM
Immediate 9:00 AM
Short
Morning
Delay
Wake
Delay
Short
Evening
Delay
Sleep
Delay
SLEEP
Scullin & McDaniel (2010)
SLEEP DISORDERS
Insomnia
! Narcolepsy
! Sleep apnea
! Sleepwalking
! Night terrors
!
DREAMS
!
!
!
Can occur during any stage of sleep
Meaning of dreams
! Manifest content
! Latent content
Why do we dream?
! Activation-Synthesis Model
! Evolved Threat-Rehearsal Theory
PSYCHOACTIVE DRUGS
!
Change brain function by activating neurotransmitter system
Abuse
! Use interferes with everyday life
! Psychological Dependence
! Physical Dependence (addiction)
! Withdrawal
! Tolerance
!
PSYCHOACTIVE DRUGS
!
Addiction in the brain
! Dopamine
& the reward pathway
Volkow et al., 2001, The Journal of Neuroscience
PSYCHOACTIVE DRUGS
!
4 classes of drugs:
! Stimulants
! Depressants
! Opiates
! Hallucinogens
PSYCHOACTIVE DRUGS
!
Stimulants
! Increase activity of the nervous system
" Dopamine and norepinephrine
! Therapeutic
uses:
" Amphetamines treat narcolepsy, ADHD
! Dependence
threat:
" Moderate physical, high psychological
! Withdrawal
symptoms:
" Mild to moderate, vary
PSYCHOACTIVE DRUGS
!
Depressants
! Suppress activity of the nervous system
! Therapeutic
uses:
" Sleeping pills, anesthesia
! Dependence
threat:
" High physical, high psychological
! Withdrawal
symptoms:
" Can be severe
PSYCHOACTIVE DRUGS
!
Opiates
! Suppress activity of the nervous system
" Mimic endorphins
! Therapeutic
" Pain
uses:
relief
! Dependence
threat:
" Very high physical, very high psychological
! Withdrawal
symptoms:
" Can be severe
PSYCHOACTIVE DRUGS
!
Hallucinogens
! Alter perception
! Therapeutic
uses:
" Chemotherapy relief (marijuana)
! Dependence
threat:
" No physical, moderate psychological
! Withdrawal
symptoms:
" No physical effects, but can be difficult
TOMORROW
!
Learning
WRITING ASSIGNMENT
!
Choose 1 article from a list I’ve provided:
! Perception
& Emotion: Do we perceive threatening stimuli as being closer to