As we all know, there are many types of receptors in the brain, and these receptors have different functions in different parts of the brain. The existing methods for activating receptors include receptor agonists and optogenetics, while the verification methods include molecular tracers and molecular staining.

However, these are all experiments conducted on animals and cannot directly apply to humans. And this method of electrical stimulation can be carried out on humans.

So,Is there a way of electrical stimulation that can directly stimulate specific receptors in certain parts of the brain, and is there reliable evidence to prove the correctness of our verification?