Fig. 10.

Receptor potentials and light-elicited currents are diminished by TRP. A, Receptor potential responses to four flash intensities from log₁₀ −4.0 to −2.5 in 0.5 log unit steps in control conditions. The flash duration (horizontalbar at bottom left) was 0.55 sec. B, Receptor potential responses to the flash intensities described in A but during perfusion of the lamina with 1.0 μm TRP at 5.0 μl/min. C, Receptor currents elicited by the same stimuli shown in A and measured in voltage clamp at the membrane resting potential (−60 mV) in control conditions.D, Receptor currents as described in Cbut during TRP perfusion. Each trace is the average of three to five responses.