Can anyone tell me about what are the ethical issues in Human Neuroscience studies. Which are Drugs we cannot use? Which are parameters we can use to study Human Brain?
I would advise you to review some of the BRAIN Initiative, as well as Antonio Damasio's literature. I am currently studying the subject will be glad to Exchange information and sources.
Ethical issues are of course also present in developmetal aspects of neuroscience research using human material. Countriesstates have different laws on what's acceptable and what not.
For example, see the table on this page (a bit outdated):