Psychiatrists and psychotherapists are increasingly exposed to neuro-scientific research findings on mental disorders. Neuropsychology and experimental neuroscience have found that mental functions are mediated by specific regions of the brain. Studies have also shown that certain mental dysfunctions may be traced back to anomalies in these regions and to anomalies in the functioning of neurotransmitters. Discuss the neuro-scientific explanations for psychopathology, with reference to two relevant mental disorders.