How Do Drugs Affect the Brain?

There is a highly structured way in which the drugs affect the brain. Drugs in the same class have extremely similar oscillations. As i increase the dose, there's a very systematic change in the oscillations. And then the third thing to appreciate is that the oscillations change systematically with age. So how a six year old looks would look different from a 60 year old when they're both in an equivalent anaesthetic state.