The biogenic amine theory of depression states that depression results from a deficiency of biogenic amines in key areas of the brain. Why might a deficiency of these biogenic amines exist?
A) A slowing of the action of the neurons may lead to their depletion.
B) Monoamine oxidase (MAO) strengthens the impact of biogenic amines.
C) The number or sensitivity of postsynaptic receptors may increase.
D) Norepinephrine may be depleted because biogenic amines feed off of loose particles of the neurotransmitter.
C
Feedback:
The three reasons for depression according to the biogenic amine theory include (1) MAO may break down biogenic amine to be recycled or restored in the neuron. (2) Rapid fire of the neurons may lead to their depletion. (3) The number or sensitivity of postsynaptic receptors may increase, thus depleting neurotransmitter levels.
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