Examples of the stimuli.

<p>Example items are shown from the 280 stimuli used in the fMRI study. Level of permanence (from low to high) is shown from left to right. Shown vertically from bottom to top, variation (from low to high) in terms of the non-permanence factor. For further examples of the stimuli see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0043620#pone.0043620.s002" target="_blank">Figure S2</a>.