Triplet counts in the C. elegans network compared to the random matrix ensemble. Blue squares show triplet counts for the actual network (dataset 1, threshold Θ = 2), red crosses show counts for each random connectivity matrix relative to the mean count for the whole random matrix ensemble. Three framed motifs are discussed in the main text. All matrices in this ensemble (n = 1000) preserve the counts of uni- and bi-directional connections for each neuron. A count for a given pattern is often the same in many matrices resulting in few crosses (e.g. there are only 25 crosses for pattern 12 because the count of this pattern in the random matrix ensemble varies between 6 and 32; 29 and 31 were not observed).