background: the existence of a pathophysiological link between headaches and muscle activity pattern is still being debated. the purpose of this study was to investigate the effect of pain on the timing pattern of the masseter muscle in patients with tension-type headache (tth) and migraine without aura (moa). methods: 57 women (22 controls, 19 moa and 16 tth) participated in the study. the ele...

In this paper, several two-dimensional extensions of principal component analysis (PCA) and linear discriminant analysis (LDA) techniques has been applied in a lossless dimensionality reduction framework, for face recognition application. In this framework, the benefits of dimensionality reduction were used to improve the performance of its predictive model, which was a support vector machine (...