Correlations between biochemical components in saliva and psychological and behavioral maladjustment

这项研究试图通过分析唾液中的神经递质来识别人类的情绪和精神状况。虽然焦虑症患者的唾液血清素浓度已被证实高于健康个体，但可以推测，这一结果并非来自血清素总量的差异，而是来自伴随昼夜节律的滞后。此外，健康青少年的唾液血清素已被发现与其唾液嗜铬粒蛋白相关。最后，当那些从学习中获得快乐的人的脑内血清素趋于下降时，那些懒惰倾向于学习的人的唾液血清素浓度也较低。这些发现表明，唾液中的血清素很可能反映了大脑内的神经元活动；从而验证了唾液血清素可以作为测量人类精神状态的媒介的假设。

This study attempted to identify human emotions and mental conditions by analyzing neurotransmitters contained in saliva. Although salivary serotonin concentrations in anxiety disorder patients have been confirmed to be higher than those in healthy individuals, it is presumable that the result comes not from a difference in the total quantity of serotonin but rather from the lag that accompanies circadian rhythms. In addition, salivary serotonin in healthy adolescent individuals has been found to correlate with their salivary chromogranin. Finally, while intracerebral serotonin tends to decline in individuals who find pleasure in learning, salivary serotonin in individuals with a laziness tendency towards studying also showed lower concentrations. These findings suggest a strong possibility that salivary serotonin reflects neuronal activities within the brain ; thereby validating the hypothesis that salivary serotonin can serve as a medium for measuring the human mental state.