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← Human Body & HealthWhy does continued stimulant abuse escalate compulsive drug-seeking behavior related to the nucleus accumbens?
A)Decreased glutamate receptor sensitivity
B)Elevated serotonin transporter expression
C)Reduced prefrontal cortex inhibition input
D)Long-term potentiation of glutamatergic synapses✓
💡 Explanation
LTP strengthens the neural circuits involved in reward and motivation, leading to increased sensitivity to drug-related cues. This occurs because the repeated activation of dopamine release from the VTA onto the nucleus accumbens facilitates the induction of LTP at glutamatergic synapses, therefore driving compulsive drug-seeking, rather than merely inducing acute reward.
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