Gabaergic Neurons In The Quail Brain Distribution

In this paper, GABA-like immunoreactivity (G-LIR) was mapped in the quail (Cotumix coturnix japonica) by means of monoclonal antibody to GABA. We try to show the distribution of GABAergic neurons and discussed their effects.The results show that G-LIR was found almost in the whole brain. Birds haue good eyesights, so they have evolutionary diencephalons. GABAergic neurons were observed in nucleus subpretectalis (SP), nucleus isthmi, pars nagnocelularis (Imc), nucleus isthmi, pars parvocellularis (Ipc), Tectum opticun (TeO). SP, Imc, Ipc and TeO are visual nuclei. There are connections between vocalization and audition. Furthermore GABAergic neurons were observed in nucleus ventralis lemnisci lateralis (VLV) and nucleus nesencephalicus lateralis,pars dorsalis (Mid) too. VLV and Mid are auditory nuclei. These results indicate that GABA plays an important role in communication in the brain.The present results and the existence of GABA in the nonsong bird indicate that it plays an important role in the brain of birds as an inhibitionary neurotransmitter.