1. Krnjevic, K. Physiol. Rev. 54, 418–540 (1974).
2. Shepherd, G. M. The Synaptic Organization of the Brain (Oxford University, New York, 1974).
3. Jefferys, J. G. R. & Haas, H. L. Nature 300, 448–450 (1982).
4. Taylor, C. P. & Dudek, F. F. Science 218, 810–812 (1982).
5. Heinemann, U., Neuhaus, S. & Dietzel, I. in Cerebral Blood Flow, Metabolism and Epilepsy (eds Baldy-Moulinier, M. & Meldrum, B. S.) (John Libbey, London, in the press).