FIG. 2.

Cochlear delays in chinchilla, cat, and guinea pig. Estimates of BM signal-front (short-dash lines) and CF group delays (solid and long-dash lines) based on direct BM recordings and/or recordings from auditory nerve fibers. [Note that the delays of responses of auditory nerve fibers corrected for neural/synaptic delays of 1 ms coincide with the delays of direct BM recordings (Temchin et al. 2005).] A Average signal-front and CF group delays for chinchilla BM (Temchin et al. 2005). B Derived-band estimates for guinea pigs from Figure 6 of Shore and Nuttall (1985) (click level is not specified) and Figure 3 of Aran and Cazals (1978) [click level is 65 dB pe SPL (50 dB HL)]. Solid line, from Figure 7A of Siegel et al. (2005). Dashed line, from data of Figure 1 of Evans (1972). C Derived-band delay estimates (open symbols) from a single cat from Figure 3 of Evans and Elberling (1982). Clicks were presented at 30, 50, and 70 dB above the CAP threshold (defined as the level that evoked a CAP with average peak-to-peak amplitude of 5 μV). Solid and long-dash lines from Figure 7B of Siegel et al. (2005), based on data of Carney and Yin (1988), van der Heijden and Joris (2003), and van der Heijden and Joris (2005). Short-dash line, from Figure 6A of Lin and Guinan (2000).