METHOD FOR DETERMINING MENTAL FATIGUE DEGREE Russian patent published in 2005 - IPC

FIELD: medicine.

SUBSTANCE: method involves forming signals as tests requiring solution. The tests are shown with frequency changed proportionally to the frequency they are solved. The number of tests is set to be the same in the cases of recovered and tired state. General amount of time spent for finding solution for given number of tests and the number of tests having right solutions are determined in each state. Mental fatigue degree is evaluated from relative change of mean time needed for finding the right test solution using a relationship like (T_m.r- T_m.t)100%/_Tm.t, where T_m.t = T_sum.t/K_r.t, T_m.r = T_sum.r/K_r.r, T_m.t is the time spent for finding the right answer in tired state, T_m.r is the time spent for finding the right answer in recovery state, T_sum.t is the total time spent to solve given number of tests in tired state, T_sum.r is the total time spent to solve given number of tests in recovered state, K_r.t is the number of right answers to the tests in tired state, K_r.r is the number of right answers to the tests in recovered state.

EFFECT: reliable estimation of fatigue degree.