Talk about biochemistry

Let's not discuss whether there is such technology, but it is possible in theory.

All human feelings and behaviors are expressed through the ingenious combination of current in the body and various hormones.

Let's talk about hormones first, so how are hormones produced? The approximate path is as follows:

Stimulation → nerve conduction → brain processing → nerve conduction → specific cells → secretion of corresponding hormones.

Note: Not all information will be processed by the brain, and some hormones are produced instinctively. For example, when in danger, adrenaline will increase sharply in a short time.

There are two main aspects of stimulus: internal cause and external cause.

Internal cause: substances ingested from the outside are stimulated in the human body. Everyone's nerve sensitivity is different, the information received is different, and the processing results are naturally different, which is why different people have different tastes.

External cause: The process of receiving external information from eyes, ears, skin and other senses and then transmitting it to the brain is the same as the internal cause, but the cells receiving the information are different.

Simply put, if the nerve conduction system is destroyed, people will become heartless, theoretically.

But in fact, people have memories in their brains, and even without external stimuli, their memories will play a guiding role to some extent.

To some extent, besides brain cells, other cells in the human body also have some simple memory functions.

The appearance and disappearance of love:

Generation: Simply put, if the body receives the information provided by the other party and then produces hormones and currents that can make the body feel happy, then emotional love and so on will come.

Disappear: it is just the opposite of production. When the body processes the information provided by the other party, it can no longer produce pleasure, and love and feelings naturally disappear. Whether you can continue to stimulate the body to produce pleasure is not the only reason for the other party. The same stimulation for a long time will also cause numbness to the body itself, which is the same as the drug resistance of bacteria.

Any of the processes mentioned above will also produce some corresponding currents.

Of course! Here is just a general description of the situation. Real feelings are very complicated, and can't be explained clearly in a few words.

If you really want people to become heartless, you must do the following two things:

First, completely destroy the conduction system;

Second, format the human body, and it needs to be low.

I'm tired of typing. I hope you will be satisfied.