Current Research into Neurotransmitter Systems Has Produced the "Permissive Hypothesis

question 38

Multiple Choice

Current research into neurotransmitter systems has produced the "permissive hypothesis." What does this hypothesis state?

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

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