Neurotransmitter level in MNTB. (A) GABA level in bilateral MNTB of normal or experimental rats 1w/2w/4w after cochlear ablation (P12). (B) Gly level in bilateral MNTB of normal or experimental rats at 1, 2, and 4 weeks after cochlear ablation (P12). (C) Glu level in bilateral MNTB of normal or experimental rats at 1, 2, and 4 weeks after cochlear ablation (P12). * P<0.05. At 4 weeks after cochlear ablation, the right MNTB of experimental rats had increased GABA (P<0.05), Gly (P<0.05), and Glu (P<0.05) compared to normal controls.