Experiment 3 contrast fluctuation matched model samples.

<p>The contrast fluctuations of each model sample set have been artificially matched to the contrast fluctuations across the natural samples by matching the distribution of grayscale pixel norms to that of the natural samples. Each texture is the fluctuation matched version of the corresponding stimulus in <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1002873#pcbi-1002873-g004" target="_blank">Figure 4</a>.