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Neurotransmitters + Drugs - Coggle Diagram
Neurotransmitters + Drugs
Alcohal
Blocks serotonin receptors
Serotonin regulates mood and calms brain
Blocking receptors means it lifts our mood
EXTRA
those who have alcohol in their system show less brain activity in the prefrontal cortex and amygdala so are more aggressive
brain passes less information between prefrontal cortex and amygdala so less decision making and emotion regulating
Nicotine
Affects dopamine receptors in reward pathway
Binds to receptors in way dopamine does exciting them causing electrical charge to go down the postsynaptic neuron realising dopamine in the next synapse
neurons change overtime developing less dopamine receptors
Reduces brains ability to feel dopamine by nicotine or normal activites that promote it so seek out more causing addiction
Amphetamines
EG, cocaine
Shuts down reuptake of dopamine
Causes brains dopamine to stay in synapse over-stimulating receptors producing feelings of joy
long term effects are desensitisation
more cocaine is needed then to make reward pathway work causing addiction
Cannabis
Binds to cannaboid receptors
Blocks them so neurons become inhibited
Because of cannaboid receptors in hypothalamus hard to form memories since inhibited