Decoding Animal Emotions through Orofacial Movements

Researchers have discovered that the stimulation of dopamine neurons in the ventral tegmental area (VTA) triggers orofacial movements in mice. They found two distinct types of these movements during reward-based learning tasks: transient actions upon reward expectation and active, sustained movements upon receiving a reward. These findings provide insights into animal emotions and could lead to improved diagnostic and treatment strategies for mental health conditions, as well as enhance animal welfare.