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Representative power spectrum of a subset (90, 410 and 1070 Hz) of sound stimuli used for pure-tone startle stimuli and prepulse stimuli measured at the highest level used (14 dB re. 1 m s−2). Data are normalized to a relative value of 0 dB assigned to the maximum sound level for the fundamental frequency tested. Insets, time course of pure-tone stimuli used for the startle response assay at 14 dB (re. 1 m s−2).
