Your mentor will be available to discuss the major issues of the research paper. Please contact him/her in the week before your presentation. You should aim for a 30-45 minute presentation of your paper. This will be an interactive class, so don't be surprised if it takes you longer to go through the paper in class than it did when you practiced it.
Background: This should have been set up by the specific module lecturer, but please make an effort to explain the rationale behind the particular set of experiments in the study to be discussed. It is often useful to summarize the results at the beginning of the talk, before you go into the details.
Results: Explain all the relevant parts of figures or tables. In a brief presentation like there there is the tendency to gloss over some critical details, e.g. the ordinate and abscissa! While every panel in a figure may not be critical, try to go make clear presentations of the portions that you think are relevant.
Conclusion: How do we weave the detailed results of this paper into our larger thinking about the brain in terms of function and pathology. What is the next logical step?
Balance: Try to determine the limitations of the current study. Is the model appropriate? What additional controls might be suggested? What are the overall strengths and limitations of the paper?