The phenomenon that made Eliza to have visions when she was with the Shaman is called Drug Expectancy phenomenon.
In simple terms, when a person takes a drug, they do so with the expectation that it will have a certain effect on them.
This effect and the anticipation of the same is what is termed as Drug Expectancy Phenomenon.
Other phenomena that can occur in relation to drugs are Drug Resistance
See more about drug resistance in the link below:
https://brainly.com/question/1018949