1. Brazier М. А. В., The Electrical Activity of the Nervous System, ed. 2, The Macmillan Company, New York, 1960.

2. В u c h a n a n A. R., Functional Neuro-Anatomy, ed. 4, Lea and Febiger, Philadelphia, chap. 3, «Receptors and Methods of Testing Sensibility», 1961.

3. С о x R. T., «Electric Fish», American Journal of Physics, vol. 11, p. 13, 1943.

4. F u 11 о n J. F., Muscular Contraction and the Reflex Control of Movement, The Williams and Wilkins Company, pp. 34— 37, 1926.

5. Galambos R., Nerves and Muscles, Anchor Books, Doub-leday and Company, Inc., Garden City, N. Y., 1962.

6. Wells H. G., Huxley J. S., Wells G. P., The Scien-ce of Life, Doubleday and Company, Inc., Garden City, N. Y., book 1, chap. 3, sec. 5, «Sensation and the Senses» pp. 111 — 127, 1938.