Hi, The Question I Have Is Neurological. I'm A Screenwriter/producer

Hi, the question I have is neurological. I'm a screenwriter/producer and there are some medical terms I need to use on my film and I would like to make sure that what is being said sounds as close to the real thing as possible. What I'd like to know is: If there was a pill or a serum created to alter someone's perception, that would make them see another person as this beautiful human being for example, an illusion that changes who that person is for them, what parts of the person's brain, who is seeing this illusion, would be affected by this? Thanks!