topic : Discuss the role and limitations of pharmacological intervention in the treatment of traumatic head injury Aims of the essay assignment:  Assess your ability to research a defined area of pharmacology and present your research in a clear, concise and informative fashion.  Develop your scientific writing & referencing.  Interpret and critically analyse scientific data on current theories of drug action in the CNS  Word Limit 2000 (not including references)  All sources of information must be referenced in a bibliography at the end of your essay  Original journal articles should be used where possible