Hearing losses in lesioned starlings. A , B , ABER audiograms for individual starlings in the lesion–short recovery (SLSR) and lesion–long recovery (SLLR) groups, respectively, plotted relative to mean normal threshold ± 1 SD (shaded region). NR, No response; dashed portions of lines, therefore, denote frequency regions at which thresholds were higher than the maximum SPLs produced by our equipment (in all cases >110 dB). Duration of injection regimen is indicated for each starling. Recordings were made immediately before recordings from the FLC.