I posted some something related to this that focused on the negative reinforcement aspect.
The Amygdala also reinforces positive learning.
One of the basic drives is the exploration of our environment and we clever humans have extended this to “teaching.” Positive social reinforcement is definitely something the amygdala picks up on resulting in enhanced learning. One other factor in learning is relevance - as you explore your environment (be exposed to education) your learning rate is greatly enhanced if you can see personal relevance or utility in the material. When I was teaching this point was driven home to me time and time again and that became a touchstone in reaching and teaching students struggling with the material.