Figure 3.

Measured versus predicted steady-state activity for ascending and descending staircases. Data from an ascending staircase of temperatures in warm units of cats (crosses, figure 2a), Handwerker and Neher (1976) and bats (squares, figure 2), Schäfer et al. (1988); response of M1 ipRGC in mice to an ascending/descending luminance staircase (open/filled circles, figures 1b/c), Milner and Do (2017); ascending/descending staircases of acetone concentrations from olfactory sensory neurons in fruit flies which show both regular and inverted responses (open/filled triangles, figure 2c), Kim et al. (2011). Finally, the inverted responses from cold fibres to a descending temperature staircase (plusses, figure 2), Schäfer et al. (1989).