Synthetic stimuli used to probe salamander retinal ganglion cells.

<p>The stimuli are spatially uniform with light intensity drawn independently on each stimulus frame from . The probability densities, , for all 9 stimuli used, grouped into 3 categories (cyan = Gaussian, magenta = skewed, and yellow = kurtotic). All stimuli are matched in mean (225 lux), and all except for C+ have the same contrast; for details, see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0085841#pone-0085841-t001" target="_blank">Table 1</a>.