V. F. Kirichuk,1 A. N. Ivanov,1 O. N. Antipova,1
A. P. Krenickiy,2 A. V. Mayborodin,2 V. D. Tupikin,2 O. V. Beckiy 3
1 Chair of Normal Physiology of the Saratov State Medical University, Saratov,
2 Open Joint-stok Company "The Central Scientific Research Institute of the Measuring Equipment",
Saratov, and 3 Institute of Radio Engineering Electronics RAS, Moscow