Effects of chronic neck-shoulder pain on normalized mutual information analysis of surface electromyography during functional tasks

Neck and shoulder pain is a common problem that affects a large number of people worldwide (Van Tulder et al., 2007). This problem is exacerbated by the escalating use of electronic devices such as smartphones and portable tablet computers (Berolo et al., 2011). The research concerning the etiology of chronic neck-shoulder pain has mainly focused on the study of muscle activation in the postural muscles such as cervical erector spinae (CES) and upper trapezius (UT) muscle (Visser and van Dieën 2006).

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