Read a paper that reports a neurolinguistic experiment. During the class discussion session, briefly summarize the paper to the class (just enough so they can understand what it was about and what it found; you don't need to talk about every detail) and then have them discuss it. Discussion could include critiquing it (e.g. talking about if there are any problems with the study, any alternative explanations of the results, etc.), brainstorming similar kinds of research that could be done using a similar method, brainstorming ways that the implications of the results could be important in other areas, etc.
The paper you choose could be anything, but it probably should be one that's not too complicated (some neuro experiments use extremely complex sentences or are about very subtle theoretical topics and thus might not be easy to summarize and discuss in a short period). Off the top of my head, here are a few studies that I think are not extremely difficult (some of these are short conference posters, so you may also need to read the abstracts with more details):