Effect of clonidine treatment on startle reflex parameters at different sound intensities.

<p><b><i>A</i></b>, Latencies (in ms) until the appearance of the motor response reduce as intensity increases (75, 85, 95, 105, 115 and 125 dB), mainly at higher intensities. No differences are observed between control and clonidine-treated mice, apart from the case of the lowest intensity (75 dB). <b><i>B</i></b>, Area (in mN x s) of the increase in startle response with the intensity of the sound. Clonidine-treated mice show larger areas at intensities above 95 dB than control mice. N = 35∶35. * significant differences between control and clonidine (CLO) -treated mice, when p<0.05.