This volume provides an interdisciplinary approach to this central research topic. Firstly, the hippocampus is presented generally as a model for experiments on neurotransmission in the central nervous system; secondly, special features of synaptic organisation and synaptic transmission in this area of the brain are introduced. Of particular note is the wide-ranging methodological approach which includes light and electron microscopy, immunocyhemistry, Golgi/EM techniques, intracellular differentiation and intracellular colorings, hishemistry of transmitter enzymes and receptoraudiography. The reader thereby gains insight into the broad scope of methodological possibilities for the examination of such a complex problem as neurotransmission in the hippocampus.