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IEEE Engineering in Medicine and Biology Magazine

Issue 2 • Date April-May 1994

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Displaying Results 1 - 12 of 12
  • Auditory periphery as speech signal processor

    Publication Year: 1994, Page(s):186 - 196
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1377 KB)

    The main thrust of this article concerns models of the auditory periphery and their properties as speech processors. Physiological studies are given attention, as they provide the basis for the models. Although studies of activity of single auditory nerve fibers have been underway in several laboratories since the early 1960s, it was not until the late 70s that reports of systematic investigations... View full abstract»

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  • Fractal patterns in auditory nerve-spike trains

    Publication Year: 1994, Page(s):197 - 202
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1388 KB)

    The authors discuss the following topics: traditional renewal point process models; long-term correlations; self-similarity of neuronal firing rates; power-law behavior of the Fano-factor time curve; change in the firing pattern induced by the presence of a stimulus; neural information processing with fractal nerve spikes; biophysical origin of the fractal behavior; fractal point-process model; sh... View full abstract»

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  • Multiparametric analysis of speech production mechanisms

    Publication Year: 1994, Page(s):203 - 209
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1055 KB)

    Describes a new multiparametric approach based on techniques for simultaneous analysis of oromandibular EMG signals and speech in various phonatory reaction tasks, to investigate the speech motor system. Data on latencies of EMG signals (EMG reaction time (RT)) and speech (voice RT) measured during phonatory reaction tasks from both normal subjects of various ages and pathological Parkinsonian sub... View full abstract»

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  • Measurement of otoacoustic emissions for hearing assessment

    Publication Year: 1994, Page(s):210 - 226
    Cited by:  Papers (26)  |  Patents (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2215 KB)

    The present report describes the development of hardware and software for the clinical application of otoacoustic emissions (OAEs). This development is driven by the need to quickly, inexpensively, and reliably detect and measure the properties of these small acoustic signals, across a range of audio frequencies, in background noise that is often greater than the evoked sound. However, before expl... View full abstract»

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  • Automated auditory brainstem response interpretation

    Publication Year: 1994, Page(s):227 - 237
    Cited by:  Papers (38)  |  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1328 KB)

    The authors report a complete automated system for auditory brainstem response (ABR) identification and waveform recognition. The goal was to develop an automated analysis methodology that would facilitate the clinical use of auditory brainstem responses by reducing the time required to manually label and measure absolute and interpeak latencies. The system presented here accomplished this goal, s... View full abstract»

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  • Benefits of digital hearing aids

    Publication Year: 1994, Page(s):238 - 248
    Cited by:  Papers (19)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1521 KB)

    The author examines the physiological and psychological characteristics of the impaired ear and attempts to develop an understanding that can be used as the basis for designing a hearing aid. In addition, the limitations of today's hearing aids are examined. Secondly, new technology, such as digital signal processing, are examined as to its potential in hearing aid applications. Is digital process... View full abstract»

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  • Electroacoustic evaluation of assistive hearing devices

    Publication Year: 1994, Page(s):249 - 254
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1008 KB)

    The tests described here are the first steps in consumer-based hearing aid measures. Maximum length sequence broadband frequency response measurements provide a fast method to determine the accuracy of a hearing aid "fit". The aided output sound pressure level (SPL) graph adds valuable information to determining the fit: it clearly shows how the hearing aid compensates for a hearing loss; and rela... View full abstract»

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  • Fast realization of the LADT ECG data compression method

    Publication Year: 1994, Page(s):255 - 258
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (647 KB)

    The system clock in the authors' Intel 80c31-based Holter recorder is 12 MHz, and thus it takes tens of milliseconds to obtain the d/sub k/ at instant k. Therefore, it is impossible to apply the original linear approximation distance thresholding (LADT) algorithm in real time. With the authors' improved algorithm it takes about one ms to calculate /spl verbar/a/sub adm//spl verbar/=/spl sigma//spl... View full abstract»

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  • A cluster merging filter for noise smoothing

    Publication Year: 1994, Page(s):259 - 262
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (561 KB)

    Due to the statistical nature of X-rays and the electromagnetic field, medical images produced by these energy sources are contaminated with random noise, which degrades the image quality. Because of this effect, considerable effort has been devoted to removing noise from medical images. The authors present a new method of image noise smoothing. This method uses the natural separation of distinct ... View full abstract»

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  • A pharmacokinetic model to study administration of intravenous anaesthetic agents

    Publication Year: 1994, Page(s):263 - 268
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1131 KB)

    The compartmental model is widely used in pharmacokinetic studies. Its simulated results can be used in computer assisted drug infusion, particularly for intravenous anesthetic agents. The authors consider the three compartment mammillary model. To ensure optimum pharmacodynamic effects of the anesthetic agents, one must pay attention to compartment two (well-perfused tissues such as muscle and br... View full abstract»

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  • Biosignal pattern recognition and interpretation systems. 4. Review of applications

    Publication Year: 1994, Page(s):269 - 273
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (710 KB)

    Applications in the engineering literature of pattern analysis to biomedical signals (electrophysiological (muscle, nerve, and heart) and biomechanical) are presented. The signals include EEG, EMG, ECG and blood pressure. Feature selection techniques often use: 1) thresholding or 2) reasoning with uncertainty. Many pattern analysis systems are only partial systems: they perform stages of pattern r... View full abstract»

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  • Engineering in genomics-automating the Genome Center

    Publication Year: 1994, Page(s):281 - 283
    Cited by:  Papers (1)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    Engineering enters genomics principally through the development of hardware and software tools or processes (operations research) to aid the biologist/geneticist to take different, more, or higher quality data. The Human Genome Project, in order to meet its goals for mapping and sequencing, is pushing to advance the state of the art in instrumentation, automation and computational biology. The foc... View full abstract»

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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.

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