EMG analysis of complete denture wearers using a three-dimensional representation of the time behavior of AR model parameters.
Three-dimensional representation to screen the adaptation process of individual dentures is presented. In the parametric analysis of electromyographic (EMG) signals, we have to deal with the complicated behavior of a lot of parameters in the time domain. We have employed the less-biased time varying AR model parameters estimated by locally quasi-stationary processing. Hence, we propose the time-suppressed representation of the behavior, projecting the time series of less-biased time-varying vectors onto three standard planes. The vector is composed of the k parameters, K(i) for i = 1, 2, 3. Therefore, the mutually perpendicular coordinates are K(1), K(2) and K(3). Significant changes which appear to result from the muscle dynamics are observed in the K(2)-K(3) plane, as the masticatory function is recovered.
Kiryu
T
T
Faculty of Engineering, Niigata University, Japan.
Watanabe
A
A
Saitoh
Y
Y
Ishioka
K
K
D000222:Adaptation, Physiological / Q000502:physiology; D003824:Denture, Complete; D004576:Electromyography; D006801:Humans; D008406:Masseter Muscle / Q000503:physiopathology; D008409:Mastication / Q000502:physiology; D008954:Models, Biological; D012815:Signal Processing, Computer-Assisted; D013997:Time Factors