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. Author manuscript; available in PMC: 2010 Jan 1.
Published in final edited form as: Horm Behav. 2008 Sep 12;55(1):98–105. doi: 10.1016/j.yhbeh.2008.08.013

Fig. 1.

Fig. 1

Mean rms amplitude of the averaged echo-like response to a click stimulus of 81 dB peSPL for sheep of the Suffolk variety. Results are shown for control females, control males, and various treatment groups. For both sexes, the control groups are a pool of prenatally untreated/intact plus prenatally untreated then neutered (GDX) animals. Analyzed were 20.5-ms samples of the response (filtered between 1.5 and 5.5 kHz) beginning 4 ms after click presentation. Clicks were presented as a maximum-length sequence in groups of 16, with the inter-click interval ranging between 10 and 50 msec. The response was based on a total of 2000 clicks. The flags designate one standard error of the mean. Only left ears were measured. The pattern of results obtained with a 75-dB click was the same as the pattern shown.