The brain decreases its ability to respond to dopamine signals ( desensitization ) .
大脑降低其对多巴胺信号的反应能力（脱敏）。
New approaches for desensitization strategies prior to kidney transplantation .
肾移植前脱敏治疗的新进展。
Given the desensitization effect on most male subjects , researchers found that they quickly required higher levels of stimulation to achieve the same level of arousal .
