changes is brains neurotransmitter systems will affect our mood , emotions and behaviours
eg. high levels of dopamine may cause positive symptoms of schizophrenia
in relation to therapy, we can alter levels of certain chemicals with the use of psychological drugs to treat symptoms of some disorders
drug therapy works by blocking or increasing the action of different neurotransmitters in the brain
this approach refers to the brain structure and function of different brain areas and the impact on our moods and behaviours
certain drugs target neurons in certain areas of the brain that improve symptoms that are localised in that area eg. D2 receptors and positive symptoms