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. 2017 Jul 3;149(7):689–701. doi: 10.1085/jgp.201611744

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© 2017 Astakhova et al.

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Figure 9. — Effect of forskolin on detectability of SPRs (either caused by real light or evoked by spontaneous rhodopsin activation) against the continuous noise. (A and B) Long-lasting continuous record of the toad rod in complete darkness in normal Ringer (A) and in forskolin-containing solution (B). Dash-dotted lines in A and B show the supposed threshold level at the rod bipolar synapse equal to three SDs of the continuous noise. Red shaded areas show time integral of the signal beyond the threshold, and values of the areas (in arbitrary units) are reported in the corresponding panels.