Table 1.
Physiological response properties of the recorded IC neurons
| CSI interval | n | Response duration (ms) | Spontaneous discharge (spikes/s) | Threshold (dB SPL) | BF (kHz) | Response to BF (spikes/stim) | Response latency to BF (ms) | CF (kHz) | Response to CF (spikes/stim) | Response latency to CF (ms) | MI at CF | BW10 | Q10 | BW30 | Q30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.1 | 19 | 69 ± 5.35 | 2.54 ± 1.39 | 37 ± 3 | 10.03 ± 1.41 | 6.39 ± 1.1 | 13.82 ± 1.09 | 12.36 ± 1.69 | 1.39 ± 0.26 | 17.31 ± 0.92 | 0.84 ± 0.05 | 6.61 ± 1.18 | 2.2 ± 0.25 | 15.9 ± 3.75 | 0.948 ± 0.13 |
| ≤0.2 | 11 | 71.46 ± 6.98 | 2.48 ± 1.37 | 28 ± 5 | 11.35 ± 2.51 | 9.88 ± 3.24 | 14.83 ± 4.25 | 12.19 ± 1.7 | 1.93 ± 0.46 | 18.55 ± 2.13 | 0.88 ± 0.08 | 9.23 ± 1.37 | 1.43 ± 0.22 | 16.04 ± 5.35 | 1.21 ± 0.39 |
| ≤0.3 | 6 | 54.17 ± 13.25 | 0.49 ± 0.2 | 15 ± 2 | 8.14 ± 1.06 | 7.13 ± 2.37 | 10.16 ± 0.26 | 10.02 ± 0.54 | 1.71 ± 0.83 | 18.28 ± 2.47 | 0.79 ± 0.16 | 8.38 ± 2.71 | 2.5 ± 0.94 | 13.44 ± 5.48 | 1.74 ± 0.63 |
| ≤0.4 | 9 | 55.33 ± 8.71 | 5.22 ± 2.68 | 21 ± 3 | 10.26 ± 2.44 | 4.78 ± 0.77 | 12.06 ± 1.49 | 13.66 ± 2.1 | 1.61 ± 0.49 | 17.16 ± 1.68 | 0.75 ± 0.11 | 13.09 ± 2.82 | 1.57 ± 0.42 | 18.08 ± 6.03 | 1.03 ± 0.27 |
| ≤0.5 | 5 | 47 ± 15.18 | 0.04 ± 0.03 | 34 ± 7 | 7.99 ± 0.92 | 3.2 ± 0.92 | 10.24 ± 1.58 | 13.50 ± 3.64 | 1.1 ± 0.54 | 14.49 ± 1.72 | 0.83 ± 0.17 | 7.68 ± 3.07 | 2.75 ± 1.14 | 13.55 ± 6.77 | 1.36 ± 0.28 |
| ≤0.6 | 4 | 51.25 ± 11.25 | 0.8 ± 0.74 | 30 ± 4 | 4.26 ± 2.08 | 2.94 ± 1.6 | 16.24 ± 6.82 | 11.61 ± 7.09 | 0.92 ± 0.22 | 28.56 ± 7.24 | 0.43 ± 0.19 | 6.15 ± 2.29 | 1.41 ± 0.5 | 8.87 ± 4.44 | 0.97 ± 0.3 |
| ≤0.7 | 7 | 41.43 ± 7.69 | 1.09 ± 0.64 | 17 ± 4 | 10.76 ± 1.32 | 5.29 ± 0.98 | 10.95 ± 0.97 | 13.24 ± 1.43 | 0.98 ± 0.15 | 19.77 ± 1.76 | 0.95 ± 0.03 | 10.12 ± 2.05 | 1.62 ± 0.27 | 23.34 ± 8.82 | 0.72 ± 0.14 |
| ≤0.8 | 8 | 55.63 ± 7.83 | 0.34 ± 0.14 | 30 ± 5 | 10.57 ± 1.4 | 4.84 ± 1.25 | 11.29 ± 1.53 | 12.52 ± 2.37 | 1.09 ± 0.18 | 20.56 ± 1.85 | 1 ± 0 | 16.37 ± 4.16 | 1.26 ± 0.34 | 27.26 ± 9.64 | 0.58 ± 0.18 |
| ≤0.9 | 12 | 54.75 ± 7.46 | 0.25 ± 0.11 | 23 ± 4 | 15.03 ± 2.75 | 3.33 ± 0.69 | 11.78 ± 1.2 | 17.05 ± 2.38 | 0.96 ± 0.16 | 25.39 ± 4.28 | 0.84 ± 0.05 | 11.15 ± 1.71 | 1.7 ± 0.21 | 23.35 ± 6.74 | 0.84 ± 0.15 |
| ≤1 | 24 | 42.67 ± 4.48 | 0.16 ± 0.08 | 28 ± 2 | 11.77 ± 1.9 | 2.76 ± 0.25 | 16.84 ± 1.54 | 14.12 ± 1.62 | 0.97 ± 0.13 | 21.86 ± 1.3 | 0.78 ± 0.06 | 10.29 ± 1.39 | 1.58 ± 0.15 | 23.37 ± 4.87 | 0.69 ± 0.08 |
| Correlation coefficient | −0.61 | −0.65* | −0.09 | 0.48 | −0.7* | 0.12 | 0.81** | 0.78** | 0.66* | 0.08 | 0.52 | −0.25 | 0.65* | −0.7* |
The mean ± SEM of different response and spectral properties of the 105 recorded neurons under ACh ejection are shown for different CSI intervals. BW10 and BW30 are the bandwidth at 10 and 30 dB SPLs above the threshold, respectively. The bandwidth is the frequency width of the frequency response area of each neuron at the specified intensities. Q10 and Q30 are the quality factors reflecting the relative sharpness of tuning by the CF divided by the bandwidth at 10 and 30 dB SPLs above the threshold, respectively. Some of those response properties correlated with the CSI. stim, Stimulus.
*p < 0.05;
**p < 0.01 (Spearman's coefficient).