Our expression of grief is probably a result of a mutation that altered the structure of our amygdala so that fear controls brain chemistry less than our primat

Our expression of grief is probably a result of a mutation that altered the structure of our amygdala so that fear controls brain chemistry less than our primate ancestor. When an animal is in fear, chemical reactions desensitize and suppress brain activity involved in emotional expression to protect the self from being perceived as weak and dedicate brain energy to motor functions. Looking at tears and the neurological development from genetics through adulthood would be a great way to understand what makes us human. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2871162/#!po=29.8450 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2871162/#!po=29...