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IEEE Engineering in Medicine and Biology Magazine

Issue 4 • Dec. 1992

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Displaying Results 1 - 25 of 31
  • Postural steadiness and ankle joint compliance in the elderly

    Publication Year: 1992, Page(s):25 - 27
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (386 KB)

    Research in progress to identify and model age-related changes in postural steadiness is reviewed. In particular, research evaluating measures of postural steadiness to identify those that can be used to characterize an individual's postural steadiness based on a single eyes-open/eyes-closed test pair is discussed. The validity of a measure is determined by its intergroup sensitivity and intrasubj... View full abstract»

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  • Role of ground reaction torque and other dynamic measures in postural stability

    Publication Year: 1992, Page(s):28 - 31
    Cited by:  Papers (8)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    To compare the sensitivity of different balance parameters of movement of the center of pressure (COP) and ground reaction torque (GRT) measurements, data from balance tests are presented. To examine dynamic parameters and possible quantitative interpretations, data are presented for an identical test condition (feet tandem, eyes closed) for a traumatic brain-injured patient and a norm. It is show... View full abstract»

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  • The functional standing test; development and standardization of a clinical evaluation of standing function

    Publication Year: 1992, Page(s):32 - 34
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (342 KB)

    The functional standing test, which quantifies standing performance based on the ability to free the upper extremities from support and balance tasks in order to manipulate the environment, is described. The development of the test was motivated by the need for a new assessment that reflects the clinical usefulness of standing and allows the comparison of functional neuromuscular stimulation (FNS)... View full abstract»

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  • Drugs and postural sway: quantifying balance as a tool to measure drug effects

    Publication Year: 1992, Page(s):35 - 41
    Cited by:  Papers (12)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (896 KB)

    Research aimed at modeling the relationship of the center of gravity (COG) to the center of pressure (COP) and testing alternative clinically useful measures of postural stability that are based on the COG and COP is described. Postural sway is spontaneous involuntary body movements that result from the neuromuscular corrective mechanisms acting to preserve static posture, such as standing or sitt... View full abstract»

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  • An investigation of seated postural stability

    Publication Year: 1992, Page(s):42 - 47
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (641 KB)

    Results of tests undertaken to identify which measures of seated posture control are most effective in two areas, distinguishing differences in the x and y direction control strategies for a given task and distinguishing differences in overall control strategies for pairs of different tasks, are presented. The test platform, calibration tests, test protocol, and data analysis method are described.... View full abstract»

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  • Computer solutions to identify EMG latency of automatic postural reactions

    Publication Year: 1992, Page(s):48 - 51
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (542 KB)

    A study undertaken to determine the usefulness of a computer algorithm for assessing one aspect of balance control, the latency of the muscle's reaction to an unexpected perturbation, is discussed. The procedures, instrumentation, data collection methods, visual determination methods and computer algorithms used are described. The results of visual and computer determinations of latency are presen... View full abstract»

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  • Dynamic posturography: analysis of error in force plate measurement of postural sway

    Publication Year: 1992, Page(s):52 - 56
    Cited by:  Papers (22)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (533 KB)

    EquiTest, a framework for the analysis of error in dynamic posturography, is described. Results presented indicate that systematic errors may be present when force plate data are used to estimate body sway. The response parameters in EquiTest are derived from measured forces. Two of these parameters, equilibrium score (ES) and strategy score (SS), are analyzed. ES is shown to be affected by the dy... View full abstract»

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  • Signal stationarity in postural stability assessment of children

    Publication Year: 1992, Page(s):57 - 58
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (321 KB)

    Research conducted to quantitatively evaluate the signal stationarity of the anterior-posterior (AP) and medial-lateral (ML) sway signal components so that the frequency content of those signals could be accurately assessed is summarized. The study focused on children and adolescents ranging in age from five to 14 years. The run test, which is used to identify an underlying time-varying trend in d... View full abstract»

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  • A frequency domain hypothesis for human postural control characteristics (visual feedback)

    Publication Year: 1992, Page(s):59 - 63
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (531 KB)

    Experiments performed to determine the effect of filtered visual feedback information in the frequency domain on human body sway during quiet standing is described. The three-dimensional visor display system (3D-VD) was used to filter the visual feedback information. A hypothesis is proposed to explain the test subject's postural control characteristics and to estimate the different roles of the v... View full abstract»

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  • Hip and trunk stability in paraplegic electrically augmented gait

    Publication Year: 1992, Page(s):64 - 67
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (433 KB)

    Research conducted to investigate functional electrical stimulation in the paraplegic individual to provide functional walking is reviewed. To understand better the problems of hip and trunk stability, crutch walking video tapes depicting trial crutch walking sessions experienced by four implanted complete paraplegic individuals were reviewed and all segments demonstrating instability were copied ... View full abstract»

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  • Prosthetic knee design: load transfer

    Publication Year: 1992, Page(s):68 - 71
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (557 KB)

    A study was undertaken to determine the contact areas and loads in the normal, meniscetomized, and artificial knee joints. The study provides insight into only one aspect of prosthesis design, specifically the load transfer through the implant. The generation of wear debris from metal, polyethylene, or cement-bone interface can lead to patient symptoms due to synovitis, implant loosening, or fatig... View full abstract»

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  • Hydraulic resistance and damping in catheter-transducer systems

    Publication Year: 1992, Page(s):72 - 78
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (801 KB)

    Research undertaken to investigate the characteristics of typical catheter-transducer systems to determine how frequency-dependent resistance and damping values can affect the reproductive fidelity of direct arterial pressure recordings is discussed. While the data presented will not cause methods and techniques used in invasive pressure monitoring to be altered appreciably, they will explain some... View full abstract»

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  • Experience with use of feedback in FES systems

    Publication Year: 1992
    Cited by:  Papers (2)
    Request permission for commercial reuse | PDF file iconPDF (144 KB)
    Freely Available from IEEE
  • Optimal control in biological motor control systems

    Publication Year: 1992, Page(s):82 - 83
    Request permission for commercial reuse | PDF file iconPDF (261 KB)
    Freely Available from IEEE
  • Task-dependent scheduling of feedback gains in animal motor systems: too much, too soon for FES control?

    Publication Year: 1992
    Cited by:  Patents (1)
    Request permission for commercial reuse | PDF file iconPDF (127 KB)
    Freely Available from IEEE
  • Control of limb movements by functional neuromuscular stimulation

    Publication Year: 1992, Page(s):83 - 84
    Request permission for commercial reuse | PDF file iconPDF (251 KB)
    Freely Available from IEEE
  • Where differences persist: Robotic vs. human movement control

    Publication Year: 1992, Page(s):84 - 85
    Request permission for commercial reuse | PDF file iconPDF (275 KB)
    Freely Available from IEEE
  • Gain control in reflex pathways

    Publication Year: 1992
    Request permission for commercial reuse | PDF file iconPDF (141 KB)
    Freely Available from IEEE
  • Task-related setting of reflexes in invertebrates

    Publication Year: 1992
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  • What are the advantages of variable stiffness control?

    Publication Year: 1992, Page(s):86 - 87
    Cited by:  Papers (4)
    Request permission for commercial reuse | PDF file iconPDF (243 KB)
    Freely Available from IEEE
  • In search of optimality in sensorimotor control of standing posture

    Publication Year: 1992, Page(s):87 - 88
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  • Postural requirements for limb action as rate-limiting variables in kitten motor development

    Publication Year: 1992, Page(s):94 - 95
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (217 KB)

    The authors seeks to establish a case for two points she feels have received little or no attention in basic neuroscience literature pertaining to the development of sensorimotor systems. (1) Developing animals possess the ability to generate coordinated motor actions prior to the ages they are typically observed if posture (and other task-specific) requirements are adequately addressed. (2) Neura... View full abstract»

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  • Postural constraints for two forms of quadrupedal walking

    Publication Year: 1992, Page(s):89 - 90
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  • Strategies for coordinating balance control and orientation of head-trunk axis during leg movement

    Publication Year: 1992, Page(s):90 - 91
    Request permission for commercial reuse | PDF file iconPDF (261 KB)
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  • How models help us to understand the interactions between posture and voluntary movements

    Publication Year: 1992, Page(s):91 - 92
    Request permission for commercial reuse | PDF file iconPDF (258 KB)
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Aims & Scope

IEEE Engineering in Medicine and Biology Magazine contains articles on current technologies and methods used in biomedical and clinical engineering.

 

This Magazine ceased publication in 2010. The current retitled publication is IEEE Pulse.

Full Aims & Scope