**1. Introduction**

Computational Intelligence in Electromyography Analysis – 220 A Perspective on Current Applications and Future Challenges

Vol.20, No.1, pp. 89-101, ISSN 1050-6411

Zhang, Z. G.; Liu, H. T.; Chan, S. C.; Luk, K. D. & Hu, Y. (2010). Time-dependent Power Spectral Density Estimation of Surface Electromyograhy during Isometric Muscle Contraction : Methods and Comparisons. *Journal of Electromyography and Kinesiology*,
