Detrended fluctuation analysis of time series of a firing fusimotor neuron

We study the interspike intervals (ISI) time series of the spontaneous fusi motor neuron activity by applying the detrended fluctuation analysis that i s a modification of the random walk model analysis. Thus, we have found evi dence for the white noise characteristics of the ISI time series, which mea ns that the fusimotor activity does not possess temporal correlations. We c onclude that such an activity represents the requisite noisy component for occurrence of the stochastic resonance mechanism in the neural coordination of muscle spindles. (C) 1999 Published by Elsevier Science B.V. All rights reserved.