Does the transition of the interval in perceptional alternation have a chaotic rhythm?

This study verified that the transition of the interval in perceptional alternation has a chaotic rhythm, but only in some cases. A wave was constructed by plotting observational data with spline interpolation and examined by nonlinear analysis. An attractor was modeled by constructing the wave, and the Lyapunov exponent and fractal dimension were calculated. These were analyzed using the random-shuffle method, a surrogate data method. The examination confirmed that some data have a chaotic rhythm, while others do not. Therefore, it cannot be stated unequivocally whether the transition of the interval in perceptional alternation has a chaotic rhythm. However, a new mechanism in perceptional alternation may be found by referring to the difference between chaotic and random data.