Median frequency

Fig. 3. Concentration-response curves and clinical end points for young and elderly subjects following intravenous infusion of midazolam. The effect is expressed as a percentage of the maximum effect measured with the EEG median frequency related to the concentration in the effect compartment. From Albrecht et al., 1999 used with permission.

Figure 2.6. Percent of reduction in EEG median frequency as function of ketamine plasma concentration given as the two enatiomeric forms. (Reprinted with permission from Rowland and Tozer, Clinical Pharmacokinetics, 3rd ed., Lea Febiger, Philadelphia, 1995, p. 341.)...

Let us consider a small (3 approximation in terms of the cone confined rotator (CCR) model (see VIG, pp. 293-295).16 In this approximation two largest terms (with n = 0 and n 1) are equal. Based on this result, we assume that at small (3 these terms are close at any model potential. Then we set x to be approximately equal to the median frequency ... 

Fig. 13. Cluster analysis of a batch of 64 acoustic emissions obtained from a stressed sample of polypropylene + 40% calcium carbonate. Parameters maximum amplitude, variance, and median frequency. The bounds of each cluster are indicated in the mapped projection...

Figure 1. Median frequency of enurinalion per hour by female maras, in relation to female reproductive status. Bars show median values and vertical lines show inter-quartile ranges. Some females were sampled mote than once, at different stages of their reproductive cycles. The sum of the sample sizes for each category (n=80) is therefore greater than the actual sample size (n=41).

Szeto, G.P, Straker, L.M. 0 sullivan, P.B. (2005) EMG median frequency changes in the neck-shoulder stabilizers of symptomatic office workers when challenged by different physical stressors. J Electromyogr Kine-siol, 15, 544-55. 

Keywords— Mean frequency, Median frequency. Power spectrum, Electromyography (EMG) signal. Isotonic contraction. 

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