Resistance Changes Associated with the Response of Insect Monopolar Neurons

Abstract

Intracellular recordings from the dragonfly lamina show that the light initiated hyperpolarising response of large monopolar cells (LMC's) is associated with a resistance decrease. The response reversal potential is at least 40 mV negative to the dark resting potential. The adaptation of the response to a maintained stimulus is associated with a decrease in hyperpolarising input.