Brain studies suggest that there is impairment serotonin function in neurons leading to the suprachiasmatic nucleus.大脑研究表明引导视交叉上核的神经元5-羟色胺功能有损伤。
One theory is that an area of the brain, near the visual pathway, the suprachiasmatic nucleus responds to light by sendi一种理论认为大脑主导光线通路附近的某一区域――视交叉上核――受光线影响发出信号，抑制褪黑素的分泌。