According to this model, negative/relief craving reflects dysregulation in the glutamate/GABA balance in favor of excitation excess, while positive/reward craving reflects dysregulation in dopamine/opioid neurotransmission, and obsessive/temptation crav- ing is attributed to dysregulation in serotonin ...
Relief of Skin Irritation during Feather Change Anting behaviour typically takes place during the summer. This fact leads some scientists to believe that the function of anting is to relieve skin irritation that birds feel, especially during summer months. In summer, birds lose old feathers and ...