Figure 3.
Additional varieties of frequency-response curves. A, A unimodal frequency-response curve, the most commonly observed type of curve. The dashed line shows the Gaussian fit to the data. B, C, Examples of unimodal curves with a high-frequency tail (B) and a low-frequency tail (C). D, Bimodal response curve. Dashed lines show Gaussian fits to the primary and secondary peaks of the curve. E, F, Steadily declining (E) and multimodal (F) response curves that were placed into the Other category. G-I, Population frequency-response curves from three experiments (n = 17, 24, and 29 cells) with a unimodal (G), bimodal (H), and multipeaked (I) shape. Error bars represent 1 SD.