Figure 5.
SFOAE phase-gradient delays versus frequency in tokay and leopard geckos. The symbols × and ● show delays NSFOAE (in periods) measured, respectively, in tokay (G. gecko, ten ears) and leopard geckos (E. macularius, 12 ears). The loess trend lines demonstrate that NSFOAE values are generally larger in the tokay, consistent with the sharper tuning measured in this species (Manley et al., 1996). Emission data are taken from the study of Bergevin et al. (2008). Probe levels were 20 dB SPL. Data points whose corresponding SFOAE magnitudes fell within 10 dB of the noise floor are not shown.