Current Research into Neurotransmitter Systems Has Produced the "Permissive" Hypothesis

question 92

Multiple Choice

Current research into neurotransmitter systems has produced the "permissive" hypothesis, which means that

• A)low levels of serotonin are sufficient to explain the etiology of mood disorders.
• B)the norepinephrine system regulates serotonin levels; if norepinephrine is low, depression will occur.
• C)when serotonin levels are low, other neurotransmitter systems become dysregulated and contribute to mood irregularities.
• D)the absolute levels of neurotransmitters are more significant in mood regulation than the overall balance of the various neurotransmitters.

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