Comparison of the use of approximate entropy and sample entropy: applications to neural respiratory signal.

This paper discusses several important factors which can influence the accuracy of the results obtained from application of the well-known Approximate Entropy (ApEn) method and the more recently developed Sample Entropy (SampEn) method to fast neurophysiological signals. Based on the performance of these methods on both computer simulation and experimental data, parameter selection criteria are suggested for application to fast dynamic signals.