Fig. 9.
Increase in input resistance of LE sensory neurons during classical conditioning. A, Examples of the input resistance of an LE neuron measured with a hyperpolarizing intracellular current pulse (ILE) ∼10 sec before recording the monosynaptic PSP on the pretest and the final post-test in a single experiment. B, Average change in input resistance in experiments like the one shown in A. Paired training produced a greater increase than unpaired training in the input resistance of on-field LE neurons. There were no significant changes in the input resistance of off-field LE neurons.C, There was a significant correlation between the increase in the area of the monosynaptic PSP and the increase in the input resistance of on-field LE neurons. Rm, Membrane resistance.