1. Andersson, S. A., Acta Physiol. Scand., 56, Supp. 194 (1962).
2. Mountcastle, V. B., and Powell, T. P. S., Bull. Johns Hopk. Hosp., 105, 173 (1959).
3. Towe, A. L., and Amassian, V. E., J. Neurophysiol., 21, 292 (1958).
4. Andersen, P., and Eccles, J., Nature, 196, 645 (1962).
5. Gordon, G., and Jukes, M. G. M., Nature, 196, 1183 (1962).