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12 Cards in this Set
- Front
- Back
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Alcohol's effect on the brain
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Shrinks it, atrophies gray matter (cells), neurodegeneration
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Binge drinking
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12-14 years, 1-2 times per month, 4-5 drinks at a time. Reduced integrity and organization of WM
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Less susceptible
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to sedative and motor effects of alcohol consumption.
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More susceptible
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to memory impairments - but are they long lasting? Alcohol blocks receptors in brain critical for synaptic plasticity. Blackouts common.
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Chronic alcohol use
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Decrease in hippocampal volume - binge drinking results in reduced hippocampal actiity during memory encoding
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LTP - learning and memory
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Blocked in hippocampus by alcohol
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Inhalants
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Chemical vapors that are sniffed, huffed, bagged. Hallucinations, high, distorted thoughts
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Effects of inhalants
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Dizziness, euphoria, slurred speech, lack of coordination, sleepiness.
Serious: asphyxiation, heart failure Chronic: heart damage, hypoxia, aplastic anemia, peripheral neuropathy |
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Inhalants and myelin
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Damage myelin and lead to symptoms similar to MS (trouble with basic function), depression of brain functions --> depression, anxiety, suicide, psychosis
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Reward region
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Primary = nucleus accumbens - activation leads to feelings of reward and pleasure. NA is increased in adolescents
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Dopamine
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Mesolimbic tract is activated - fool system into releasing more dopamine by blocking normal re-uptake of dopamine
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Drugs and dendrites
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Can increase number of spines on dendrites
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