Subjects: Psychology >> Physiological Psychology submitted time 2021-07-27
Abstract： Disgust is an important basic emotion for human beings and animals, and it derives from distasteful oral responses to bitter (toxic) tastants, often accompanied with nausea and vomiting and a strong desire to stay away from the induced stimulus, and it has the function of avoiding potential disease threats. A large number of studies have shown that oxytocin, progesterone, and estrogens can affect perception, generation and expression of core disgust, as well as learning conditioned disgust and recognizing facial expression in varying degrees. These three hormones mainly affect the processing of disgust by modulating neurotransmitter receptors including serotonin, γ-aminobutyric acid, acetylcholine, and glutamic acid receptors, and thus affecting the activities of amygdala, insula, anterior cingulate gyrus, putamen, piriform cortex, and middle frontal gyrus. Future studies should explore the effects of these hormones on disgust in different sensory channels and also consider their moderating roles in different genders by accurately measuring hormone levels and controlling the task difficulties. In addition, researchers can combine neuroimaging technologies with behavioral studies to clarify the neuroendocrine mechanism of these hormones affecting disgust processing.
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