The study focused on different versions of a receptor for the neurotransmitter dopamine, which controls feelings of pleasure.
研究围绕不同的多巴胺受体，多巴胺是一种神经递质，控制人的愉快的感觉。
2
The 7r variant of DRD4, a dopaminereceptor gene, had previously been associated with novelty seeking.
DRD4基因的7r变异体是一种多巴胺受体基因。它已经被证明与追求新奇的个性相关。
3
After a month, the structure of the brains of these rats ADAPTS to increased dopamine levels, showing fewer of a certain type of dopaminereceptor than they used to have and more opioid receptors.