Responses of high- and low-frequency pyramidal cells to 4 Hz sinusoidal EOD AMs. A, B, Period histograms of a high-frequency E cell and low-frequency I cell responses to local stimulation (stimulus amplitude, −12 dB). C, D, Responses of the cells of A andB to −12 dB sinusoidal AMs presented globally.E, Responses of the cells of A andB to sinusoidal AMs of various amplitudes presented with global and local geometries.