抄録
Gamma aminobutyric acid (GABA) -positive terminals were found around cell bodies in the acoustic nerve nucleus (ANN) of rats, mongolian gerbils and mice. In rats there were numerous strongly-stained GABA-positive nerve terminals, but in mongolian gerbils and mice scarce and stained more weakly. Nerve terminals originating in the spiral ganglion have been reported to synapse with cell bodies in ANN, but the spiral ganglion cells containing GABA have never been reported. It was considered that two types of terminals, GABA-positive and GABA-negative exist around the cell bodies of ANN.