Pain is not just a simple signal. The brain has special areas that help turn down pain messages. Two main groups of brain cells are very important for this job. One group is located deep in the brain stem. The other group is in the outer layer of the brain called the cortex.
The outer brain parts that help control pain are not the same for everyone. Different areas like the prefrontal cortex and the insula play a role. Their job depends on the situation and what a person is thinking about at that moment.
Things like music or distraction can change how these brain areas talk to each other. This changes the path pain signals take. Some treatments like electrical stimulation can also help these circuits work better to reduce pain.
More research is needed to understand these brain connections in people. We need to learn more about how thoughts and feelings change pain in real life situations.