Table 2.
Physiological characteristics of the 15 filled cells.
| Cell no. | CF kHz | RSP | Inhibitory sidebands |
Histograms |
Binaural response | ITD | ILD | Lat. ms | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lower | Upper | Contra | Ipsi | Both | |||||||
| 974L | 0.297 | C | Strong | Strong | Low-sustained | Onset | Phase-locked | ee/F | Strong | Weak | 12 |
| 1079L | 0.669 | V | Strong | Strong | Pauser | Pauser | Sustained | EE/s | Weak | Weak | 16 |
| 339L | 0.933 | TU | Strong | Strong | Pauser | None | On-sustained | EO/F | Weak | Peak | 15 |
| 351L | 0.947 | V | Weak | Weak | Spont. | Chop T | Chop T | EO/m | None | Moderate | 15 |
| 1079R | 0.983 | V | Weak | Weak | Sustained+large offset | None | Sustained+large offset | eE/m | Weak | Weak | 30 |
| 325L | 0.991 | V | None | None | Chop T | Inhibited | Chop T | EI/i | Strong | 10 | |
| 1071R | 1.144 | TD/C | Sustained | None | Sustained | EO/m | Strong | 25 | |||
| 939L | 1.377 | V | Weak | Strong | Low-sustained | On-sustained | On-sustained | eE/i | None | Weak | 13 |
| 505L | 1.469 | TU | Strong close | Strong | Pauser | None | EO/i | Strong | 15 | ||
| 408L | 2.193 | V | Weak | Weak | On-sustained | Inhibited | Pauser | Ei/i | Weak | 8 | |
| 380R | 2.332 | TD | Strong | Strong | Pauser | Low-sustained | Pauser | eE/f | Weak | 10 | |
| 466L | 3.303 | V | Weak far | Strong | Offset | Sustained | Offset | Eo/m | None | 58 | |
| 385R | 4.497 | N | Strong close | Strong | Spont. | Pauser | Pauser | OE/m | Strong | 14 | |
| 411L | 4.929 | V | Strong far | Strong | Build-up | None | Build-up | EO/i | Strong | 12 | |
| 969L | 5.119 | V | Weak | Strong | Pauser | None | Pauser | EO/m | Weak | 13 | |
C, closed; V, v-shaped; TD, tilt down; TU, tilt up; N, narrow. Histograms were defined following Le Beau et al. (1996): sustained units fired throughout the stimulus; On-sustained had a clear onset response, but also fired throughout the stimulus; Low-sustained fired at low level throughout the stimulus (relative to other conditions for that cell); Pausers fired strongly at stimulus onset then paused before firing for the rest of the stimulus; Build-ups were like pausers but without the onset component; Chop T fired regularly at the beginning of the response, but became less regular throughout the stimulus; Inhibited showed a decline in firing below spontaneous; Spont fired at the same spontaneous rate throughout the stimulus; None did not fire before or during the stimulus. Binaural responses: three letters show response: contralateral, ipsilateral/binaural: e, weak excitation; E, strong excitation; O, no response; f, weak facilitation; F, strong facilitation; s, summation; i, weak inhibition; I, strong inhibition; m, monaural response only, no binaural interaction (Irvine, 1986).