Figure 5.

Kinetics of offset of Weber adaptation. A, Changes in cone voltage elicited by steps from a common high light intensity to two different low intensities. Superimposed sinusoids probed gain over time following the step in mean intensity. B, Voltage responses to the light step alone (top) and to the sinusoidal stimulus, with step response subtracted (bottom). C, Difference in step (top) and sine (bottom) responses at the two light intensities. D, Mean (± SEM) differences for four cones. E–H, As in A–D, but for a light step from two different starting intensities to a common final intensity.