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Philip A. Parker
University of New Brunswick
74Publications
30H-index
5,937Citations
Publications 74
Newest
#1Ali Ameri (UNB: University of New Brunswick)H-Index: 5
#2Ernest Nlandu Kamavuako (AAU: Aalborg University)H-Index: 14
Last.Philip A. Parker (UNB: University of New Brunswick)H-Index: 30
view all 5 authors...
This study describes the first application of a support vector machine (SVM) based scheme for real-time simultaneous and proportional myoelectric control of multiple degrees of freedom (DOFs). Three DOFs including wrist flexion–extension, abduction–adduction and forearm pronation–supination were investigated with 10 able-bodied subjects and two individuals with transradial limb deficiency (LD). A Fitts' law test involving real-time target acquisition tasks was conducted to compare the usability ...
64 CitationsSource
#1Ali Ameri (UNB: University of New Brunswick)H-Index: 5
#2Ernest Nlandu Kamavuako (AAU: Aalborg University)H-Index: 14
Last.Philip A. Parker (UNB: University of New Brunswick)H-Index: 30
view all 5 authors...
Abstract A training strategy for simultaneous and proportional myoelectric control of multiple degrees of freedom (DOFs) is proposed. Ten subjects participated in this work in which wrist flexion–extension, abduction–adduction, and pronation–supination were investigated. Subjects were prompted to elicit contractions corresponding and proportional to the excursion of a moving cursor on a computer screen. Artificial neural networks (ANNs) were used to map the electromyogram (EMG) signals obtained ...
17 CitationsSource
May 1, 2014 in ICEE (Iranian Conference on Electrical Engineering)
#1Ali Ameri (UNB: University of New Brunswick)H-Index: 5
#2Erik Scheme (UNB: University of New Brunswick)H-Index: 10
Last.Philip A. Parker (UNB: University of New Brunswick)H-Index: 30
view all 4 authors...
A novel application of bootstrap aggregating (bagged) regression trees is proposed for simultaneous force estimation of multiple degrees of freedom (DOFs). Ten able-bodied subjects participated and wrist flexion-extension, abduction-adduction, and pronation-supination were investigated (data from [17]). The estimation accuracies were compared to those of the widely used multilayer perceptron artificial neural networks (ANNs). The bagged trees outperformed the baseline ANNs, slightly but signific...
6 CitationsSource
#1Ali Ameri (UNB: University of New Brunswick)H-Index: 5
#2Erik Scheme (UNB: University of New Brunswick)H-Index: 20
Last.Philip A. Parker (UNB: University of New Brunswick)H-Index: 30
view all 5 authors...
In this paper, the simultaneous real-time control of multiple degrees of freedom (DOF) for myoelectric systems is investigated. The goal of this study, in which ten able-bodied subjects participated, was to directly compare three control paradigms of constrained (force targeted), unconstrained (position targeted) and resisted unconstrained (position targeted) limb contractions. Artificial neural networks (ANNs) were trained for simultaneous myoelectric control of the three degrees of freedom (DO...
48 CitationsSource
#1Anders Lyngvi Fougner (NTNU: Norwegian University of Science and Technology)H-Index: 7
#2Øyvind Stavdahl (NTNU: Norwegian University of Science and Technology)H-Index: 23
Last.Philip A. Parker (UNB: University of New Brunswick)H-Index: 30
view all 5 authors...
The recent introduction of novel multifunction hands as well as new control paradigms increase the demand for advanced prosthetic control systems. In this context, an unambiguous terminology and a good understanding of the nature of the control problem is important for efficient research and communication concerning the subject. Thus, one purpose of this paper is to suggest an unambiguous taxonomy, applicable to control systems for upper limb prostheses and also to prostheses in general. A funct...
208 CitationsSource
#1Katerina Biron (UNB: University of New Brunswick)
#2Kevin Englehart (UNB: University of New Brunswick)H-Index: 39
Last.Philip A. Parker (UNB: University of New Brunswick)H-Index: 30
view all 3 authors...
#1Adam Wilson (UNB: University of New Brunswick)H-Index: 4
#2Yves Losier (UNB: University of New Brunswick)H-Index: 7
Last.D. F. Lovely (UNB: University of New Brunswick)H-Index: 9
view all 4 authors...
The evaluation of a bus-based smart myoelectric electrode/amplifier is described that is to be used in conjunction with a multi-function prosthetic hand controller. The smart electrode/amplifier was designed to meet power consumption and size specifications of commercially available myoelectric amplifiers used for prosthetic control applications while providing a number of additional features. This paper investigates the electrode/amplifier requirements for a pattern classifier system and compar...
21 CitationsSource
Aug 1, 2011 in EMBC (International Conference of the IEEE Engineering in Medicine and Biology Society)
#1Sabeer A. Zaman (UNB: University of New Brunswick)H-Index: 1
#2Dawn MacIsaac (UNB: University of New Brunswick)H-Index: 9
Last.Philip A. Parker (UNB: University of New Brunswick)H-Index: 30
view all 3 authors...
The repeatability of a spectral surface electromyography-based fatigue assessment strategy was evaluated. Variability of two fatigue-trend tracking parameters was used as an indicator for repeatability. The parameters were the natural logarithm of the slope of linear mean frequency decline lnMF S and the percent drop in mean frequency MF D . The coefficient of variation CoV was used as the metric for repeatability, representing the ratio of the standard deviation to the mean of repeated measures...
6 CitationsSource
#1J. C. NielsenH-Index: 26
#2S Holmgaard (AU: Aarhus University)H-Index: 1
Last.Philip A. Parker (UNB: University of New Brunswick)H-Index: 30
view all 6 authors...
This study presents a novel method for associating features of the surface electromyogram (EMG) recorded from one upper limb to the force produced by the contralateral limb. Bilateral-mirrored contractions from ten able-bodied subjects were recorded along with isometric forces in multiple degrees of freedom (DOF) from the right wrist. An artificial neural network was trained to provide force estimation. Combinations of processing parameters were evaluated and an estimation algorithm allowing hig...
127 CitationsSource
#1Adam Wilson (UNB: University of New Brunswick)H-Index: 4
#2Yves Losier (UNB: University of New Brunswick)H-Index: 7
Last.D. F. Lovely (UNB: University of New Brunswick)H-Index: 9
view all 4 authors...
The design of a bus-based smart myoelectric electrode/amplifier is described that is be used in conjunction with a multi-function prosthetic hand controller. This system incorporates several different control strategies including pattern classification of EMG to control a three axis hand (The UNB Hand) that can perform six basic grip patterns. The smart electrode/amplifier was designed to meet power consumption and size specifications of commercially available myoelectric amplifiers used for pro...
3 CitationsSource
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