High-pass neurons in H. versicolor that show slow-rise selectivity. a, c, e Spike rate vs. pulse rate functions for three neurons that showed high-pass selectivity and responded more strongly to slowrise pulses over a cell-specific range of pulse rates. b, d, f Averaged whole-cell recordings of responses, from the same neurons shown in a, c, e, to stimuli in which slow-rise or fast-rise pulses were repeated at 20 or 40 pulses/s. Carrier frequencies (BEFs) = 800 Hz, 73 dB SPL (a, b); 1150 Hz, 81 dB SPL (c, d); 1150 Hz, 84 dB SPL (e, f)