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5 Cards in this Set
- Front
- Back
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NEUROTRANSMITTER: Dopamine (DA)
FUNCTIONS: Abstract thinking, decision making Pleasure & reward system Integration of thoughts & emotions Increase in sex drive, facilitation of orgasm |
EFFECTS OF EXCESS:
Mild: Enhanced creativity & problem solving; ability to generalize situations: good spatial ability; premature ejaculation Severe: Disorganized thinking, loose associations; disabling compulsions; tics; stereotypic behaviors EFFECTS OF DEFICIT: Mild: Poor impulse control; poor spatial ability; inability to think abstractly; no joy, no anticipation of pleasure Severe: Parkinson disease; endocrine changes; movement disorders |
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NEUROTRANSMITTER: Norepinephrine (NE)
Epinephrine (E) FUNCTIONS: Alertness, ability to focus attention, ability to be oriented. Necessary for learning & memory Primes nervous system for fight or flight |
EFFECTS OF EXCESS:
Hyperalertness; anxiety, panic Paranoia Loss of appetite Increased sensation-seeking behaviors EFFECTS OF DEFICIT: Dullness, low energy Depression |
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NEUROTRANSMITTER: Serotonin (5-HT)
FUNCTIONS: Inhibition of activity; calmness, contentedness Regulation of temperature of sleep cycle Pain perception Precursor to melatonin, which plays a role in circadian rhythms |
EFFECTS OF EXCESS:
Sedation; decreased anxiety Increased sleep Decreased sex drive; decreased orgasms Indecision Craving for sweets & carbohydrates If greatly increased, may have hallucinations EFFECTS OF DEFICIT Irritability, hostility; increased aggression Decreased impulse control; increased suicidal tendencies Insomnia Increased sex drive |
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NEUROTRANSMITTER: Acetylcholine (ACh)
FUNCTIONS: Preparation for action; stimulation of parasympathetic system Emotional regulation Social play, exploration Control of muscle tone by balance with DA |
EFFECTS OF EXCESS:
Self-consciousness, excessive inhibition; anxiety Somatic complaints Depression EFFECTS OF DEFICIT: Lack of inhibition; euphoria Poor short-term memory Antisocial behaviors Parkinson disease |
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NEUROTRANSMITTER: GABA
FUNCTIONS: Calmness, contentedness Reduction of aggression |
EFFECTS OF EXCESS:
Sedation Impaired recent memory Anticonvulsant EFFECTS OF DEFICIT: Irritability Lack of coordination Seizures |
