No, not the journal. Real trends, measured, peer-reviewed and published. PloS One has 49 new papers out and one of them investigates all abstracts from the Annual Meetings of the Society for Neuroscience from 2001-2006. Lin et al. find


To see what they mean, you just have to look at their Fig. 10 (but do take a good lok at the Y-axes!):


The left graph shows the development of behavioral/systems neuroscience and the right graph the cellular/molecular trend.
Some referees at the German funding agency DFG would do well to have a close look at this graph next time they get to review a grant of mine.