I was just reading this paper (http://www.nature.com/neuro/journal/vaop/ncurrent/full/nn.3466.html http://www.nature.com/neuro/journal/vaop/ncurrent/full/nn.34.

I was just reading this paper (http://www.nature.com/neuro/journal/vaop/ncurrent/full/nn.3466.html http://www.nature.com/neuro/journal/vaop/ncurrent/full/nn.34...), and I noticed that they say only 5% of cells in the parahippocampal gyrus show grid-like activity p < 0.05, but in Fig. 2 and the supplemental information they still plot the grid responses from the parahippocampal gyrus, which are presumably noise, lumped together with the responses from the entorhinal cortex, cingulate, and hippocampus, at least some of which are presumably real. This doesn't invalidate the rest of the paper, which suggests there are really grid cells in the latter three regions, but it's frustrating. But I probably care more whether there are grid cells in the parahippocampal gyrus than most people.