Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
16 Cards in this Set
- Front
- Back
|
Neurotransmission |
the brain has pathways for chemical messengers; these tracts are like different highways in the brain. Most of this is completely outside of our awareness |
|
|
Chemical _______________ called neurotransmitters are released by constant electrical impulses that flash through the brain |
messengers |
|
|
Neurons: The Big Seven |
Acetylcholine Dopamine Norepinephrine Epinephrine Histamine Gamma-amino butyric acid Serotonin |
|
|
Acetylcholine |
Decreases HR and contraction rate, dilates blood vessels- deficient in alzheimer's patients |
|
|
Dopamine |
essential to the control of motion- similar to adrenaline, impacts the reward center of the brain, impacts mood a CHEMICAL that is always present in the brain. plays an important role in body movement, thinking, motivation and reward, PLEASURE responses |
|
|
norepinephrine |
arousal and alertness |
|
|
Epinephrine |
adrenaline-activates in "fight or flight" |
|
|
Serotonin |
regulates mood, appetite, sleep, muscle contraction, memory and learning |
|
|
Histamine |
impacts lung function |
|
|
Gamma-amino butyric acid |
relaxation |
|
|
Example of Dopamine's Effect |
Eating --> Dopamine -->Pleasure--> Motivation (desire) to eat again when hungry |
|
|
Dopamine Imbalance |
|
|
|
meth/cocaine= Dopamine= MOSTLY PLEASURE + SOME NEGATIVE EFFECTS |
|
|
|
Dopamine and stimulant use over time: |
stimulant use= damaged dopamine system= some pleasure + many negative effects use--> depression --> craving --> use cycle = addiction |
|
|
How a drug is taken influences: |
|
|
|
effects of psychoactive drugs |
|
