By signing for the participation in the VERTICAL VK2, the runner confirms the acknowledgment, understanding and acceptance without reservation of these regulations and the ethics of the race. US PATENT 3,951,134 - APPARATUS AND METHOD FOR REMOTELY MONITORING AND ALTERING BRAIN WAVES--Apparatus for and method of sensing brain waves at https://cashfyzzy.ziblogs.com/18281869/Все-о-vk4