Your lecturer is there to help. Only students who provide support documentation will be considered for tute changes. Students with timetable clashes will get preference over employment committments. Check these to see to which tute you have been allocated. The study of the brain in relation to behaviour, emotion, perception and thought.
Important answers come from understanding neural mechanisms of addiction.
The heroin experience and heroin addiction arise in part because nerve cells in localized brain regions are activated and over time the characteristics of these cells change during repeated doses of heroin. Narcan and naltrexone block some of those neural changes. Some drugs acting on brain neurons are very effective at removing symptoms of schizophrenia. Brain lesions and how they disrupt behaviour. Individual case studies.