-
what is a disorder
a disorder of structure or function in a human, animal, or plant, especially one that produces specific signs or symptom
-
what is the strongest predictor of substance abuse
family genetic history
-
old brain
- survival: cravings for food, sex, sleep, etc.
- act: fight or flight
-
new brain
- executive functions, reasons, creativity
- applies capacities to meet survival needs in planned, adaptive ways
-
what happens when survival is at play
the old brain can override the new brain
-
what part of the brain contains the reward/pleasure center
the limbic system
-
Go! system
- old brain sends off these impulses
- rewards things needed for survival:
- drug use (more dopamine)
-
Stop! system
- shuts down go system when situation is rectified or deed is met
- stops system is in the prefrontal cortex
-
how do drugs alter the stop go system
with drugs the Go signal responds so strongly that it can disable to stop signal (prefrontal cortex)
-
Function of the biggest region of the "brain"
executive functioning (stop)
-
function of the middle portion of the "brain"
emotional processing and memory formation
-
function of the smaller/lower part of the "brain"
basic life functions
-
The limbic reward system
just remember this
-
endogenous vs. exogenous
made inside the body vs. outside the body
-
origin of neurotransmitters
- enodgenous- dopamine, norepinephrine, serotonin, GABA, and others
- exogenous- false neuros that come from outside the body
-
GABA
endogenous neuro that is inhibitory and slows down nervous processes
-
nucleus accumbens
- middle brain
- plays role in processing motivation, pleasure, reward, and reinforcement learning
-
anterior cingulate cortex
- middle/top brain
- involved in rational cognitive function
- reward anticipation, decision-making, empathy, impulse control, emotion
-
amygdalae
- part of limbic system
- plays role in formation and storage of emotional learning, decision making, and fear response
-
VTA
- in the lower brain
- ventral tegmental area
- origin of dopaminergic cell bodies
-
function of the prefrontal cortex in relation to impulses
- it catches all the impulses
- delay of gratification
-
what parts of the brain are majorly affected by substance abuse
prefrontal cortex, nucleus accumbens, VTA, anterior cingulate cortex, amygdala
-
how can we measure blood in the brain
- single photon emission computed tomography
- SPECT
|
|
