Article 16 human 16 mathematical model Humans 14 algorithm 9 machine learning 8 signal noise ratio 8 measurement accuracy 7 nerve cell network 7 adult 6 electroencephalography 6 female 6 male 6 Algorithms 5 human experiment 5 learning algorithm 5 support vector machine 5 Classification (of information) 4 Wearable sensors 4 artificial neural network 4 classification algorithm 4 controlled study 4 diagnostic imaging 4 heart rate 4 image segmentation 4 principal component analysis 4 sensitivity and specificity 4 training 4 walking 4 COVID-19 3