Figure 1.

Averaged power spectra of SOAEs from four lightly anesthetized Tokay geckos under control conditions. Although peaks rarely occurred at frequencies below 1.0 kHz or above 5.2 kHz, emissions could be dispersed across the spectrum or grouped within specific frequency bands. Three panels demonstrate clustered emissions at frequencies in excess of 2.6 kHz. The interrupted vertical lines demarcate the three frequency bands used in subsequent analyses: 0.5–1.0 kHz, 1.0–2.6 kHz, and 2.6–5.2 kHz. Note that the abscissae and ordinates are logarithmic in this and subsequent power spectra.