Sign Stimulus Threshold Slider
Drag the stimulus intensity past 100% (the natural range) to see the supernormal-stimulus effect.
Stickleback belly redness
Oystercatcher egg size
Belly redness intensity (% of natural maximum)
Stimulus intensity:
50%
— Attack/incubation response strength:
0%
natural max (100%)
supernormal range
Natural belly redness is at 100% — try pushing past it.