Patent ID: 6658369
Filing Date: 2003-12-02
Classification: A61B

Abstract:
A method for the predictive determination of a parameter representative of the mental activity of a person, which method involves:A) the acquisition of encephalograms of said person in the course of at least two exertion sequences separated by a rest sequence; B) the calculation in the course of each of said exertion sequences of the mean value of the dimension of a chaotic attractor, denoted df (t); C) the calculation for said exertion sequences and said rest sequence of a fatigue function F(t) and of a recovery function R(t) according to an exponential mode, with: F(t)=Fo eâˆ’ft R(t)=Ro ert â€ƒf and r denoting a fatigue rate, and rest rate respectively; D) making a prediction df(t) of the changes in the dimension d defined by the product of the fatigue and recovery functions df(t)=F(t)R(t) in the course of at least two exertion sequences having a first and a second durations separated by a period of rest having a third duration.