The Experts below are selected from a list of 6117 Experts worldwide ranked by ideXlab platform

Niloy Bhadra - One of the best experts on this subject based on the ideXlab platform.

  • high frequency electrical conduction block of mammalian peripheral motor nerve
    Muscle & Nerve, 2005
    Co-Authors: Niloy Bhadra, Kevin L. Kilgore
    Abstract:

    A quick-acting, quick-reversing method for blocking action potentials in peripheral nerves could be used in the treatment of muscle spasticity and pain. A high-frequency alternating-current (HFAC) Sinusoidal Waveform is one possible means for providing this type of block. HFAC was used to block peripheral motor nerve activity in an in vivo mammalian model. Frequencies from 10 to 30 kHZ at amplitudes of between 2 and 10 V were investigated. A complete and reversible motor block was obtained at all frequencies. The block threshold amplitudes showed a linear relationship with frequency, the lowest threshold being at 10 kHZ. HFAC block has three phases: an onset response; a period of asynchronous firing; and a steady state of complete or partial block. The onset response and the asynchronous firing can be minimized by using an optimal frequency–amplitude combination. In general, the onset response was lowest for the combination of 30 kHZ and 10 V. Muscle Nerve, 2005

  • High-frequency electrical conduction block of mammalian peripheral motor nerve
    Muscle and Nerve, 2005
    Co-Authors: Niloy Bhadra, Kevin L. Kilgore
    Abstract:

    A quick-acting, quick-reversing method for blocking action potentials in peripheral nerves could be used in the treatment of muscle spasticity and pain. A high-frequency alternating-current (HFAC) Sinusoidal Waveform is one possible means for providing this type of block. HFAC was used to block peripheral motor nerve activity in an in vivo mammalian model. Frequencies from 10 to 30 kHZ at amplitudes of between 2 and 10 V were investigated. A complete and reversible motor block was obtained at all frequencies. The block threshold amplitudes showed a linear relationship with frequency, the lowest threshold being at 10 kHZ. HFAC block has three phases: an onset response; a period of asynchronous firing; and a steady state of complete or partial block. The onset response and the asynchronous firing can be minimized by using an optimal frequency-amplitude combination. In general, the onset response was lowest for the combination of 30 kHZ and 10 V.

Kevin L. Kilgore - One of the best experts on this subject based on the ideXlab platform.

  • high frequency electrical conduction block of mammalian peripheral motor nerve
    Muscle & Nerve, 2005
    Co-Authors: Niloy Bhadra, Kevin L. Kilgore
    Abstract:

    A quick-acting, quick-reversing method for blocking action potentials in peripheral nerves could be used in the treatment of muscle spasticity and pain. A high-frequency alternating-current (HFAC) Sinusoidal Waveform is one possible means for providing this type of block. HFAC was used to block peripheral motor nerve activity in an in vivo mammalian model. Frequencies from 10 to 30 kHZ at amplitudes of between 2 and 10 V were investigated. A complete and reversible motor block was obtained at all frequencies. The block threshold amplitudes showed a linear relationship with frequency, the lowest threshold being at 10 kHZ. HFAC block has three phases: an onset response; a period of asynchronous firing; and a steady state of complete or partial block. The onset response and the asynchronous firing can be minimized by using an optimal frequency–amplitude combination. In general, the onset response was lowest for the combination of 30 kHZ and 10 V. Muscle Nerve, 2005

  • High-frequency electrical conduction block of mammalian peripheral motor nerve
    Muscle and Nerve, 2005
    Co-Authors: Niloy Bhadra, Kevin L. Kilgore
    Abstract:

    A quick-acting, quick-reversing method for blocking action potentials in peripheral nerves could be used in the treatment of muscle spasticity and pain. A high-frequency alternating-current (HFAC) Sinusoidal Waveform is one possible means for providing this type of block. HFAC was used to block peripheral motor nerve activity in an in vivo mammalian model. Frequencies from 10 to 30 kHZ at amplitudes of between 2 and 10 V were investigated. A complete and reversible motor block was obtained at all frequencies. The block threshold amplitudes showed a linear relationship with frequency, the lowest threshold being at 10 kHZ. HFAC block has three phases: an onset response; a period of asynchronous firing; and a steady state of complete or partial block. The onset response and the asynchronous firing can be minimized by using an optimal frequency-amplitude combination. In general, the onset response was lowest for the combination of 30 kHZ and 10 V.

E Moreau - One of the best experts on this subject based on the ideXlab platform.

  • role of the electric Waveform supplying a dielectric barrier discharge plasma actuator
    Applied Physics Letters, 2012
    Co-Authors: N Benard, E Moreau
    Abstract:

    The paper compares the influence of different Waveforms as input for a dielectric barrier discharge plasma actuator investigated in context of plasma-assisted flow control. The electrical aspects, the plasma morphology, the body force production, and the two-component time-resolved electric wind produced over a single ac period of signal are investigated. Results shown that square Waveform is optimal in terms of body force and mean electric wind production, but the velocity fluctuations are enhanced by using a Sinusoidal Waveform. The time-resolved measurements of the produced velocity demonstrate that the electromechanical conversion mechanism is quasi-linear in the vicinity of the discharge.

O. Kukrer - One of the best experts on this subject based on the ideXlab platform.

  • ESTIMATION OF THE FREQUENCY ANDWaveform OF A SINGLE-TONE SINUSOID USING AN OFFLINE-OPTIMIZED ADAPTIVE FILTER
    2016
    Co-Authors: A. Hocanin, O. Kukrer
    Abstract:

    A novel offline-optimized adaptive filtering (OOAF) algo-rithm is proposed which allows the coupled estimation of Waveform and frequency of a single-tone sinusoid in addi-tive Gaussian noise. In a specified range of frequencies, the coefficients of a FIR filter are computed to minimize a given noise power. At a particular frequency in the range, quadratic polynomials are used to compute the impulse re-sponse and its derivative with respect to frequency. The Waveform and its frequency are then determined by an adap-tive algorithm that uses the offline-optimized filter. In AWGN, the frequency estimate is shown to be unbiased and has an approximate asymptotic variance derived analytically. Sim-ulation and analytical results show that OOAF exhibits ex-cellent performance in tracking the Sinusoidal Waveform and estimation of its frequency especially in colored noise. 1

  • Estimation of the frequency and Waveform of a single-tone sinusoid using an offline-optimized adaptive filter
    Proceedings. (ICASSP '05). IEEE International Conference on Acoustics Speech and Signal Processing 2005., 2005
    Co-Authors: A. Hocanin, O. Kukrer
    Abstract:

    A novel offline-optimized adaptive filtering (OOAF) algorithm is proposed which allows the coupled estimation of Waveform and frequency of a single-tone sinusoid in additive Gaussian noise. In a specified range of frequencies, the coefficients of an FIR filter are computed to minimize a given noise power. At a particular frequency in the range, quadratic polynomials are used to compute the impulse response and its derivative with respect to frequency. The Waveform and its frequency are then determined by an adaptive algorithm that uses the offline-optimized filter. In AWGN, the frequency estimate is shown to be unbiased and has an approximate asymptotic variance derived analytically. Simulation and analytical results show that OOAF exhibits excellent performance in tracking the Sinusoidal Waveform and estimation of its frequency, especially in colored noise.

N Benard - One of the best experts on this subject based on the ideXlab platform.

  • role of the electric Waveform supplying a dielectric barrier discharge plasma actuator
    Applied Physics Letters, 2012
    Co-Authors: N Benard, E Moreau
    Abstract:

    The paper compares the influence of different Waveforms as input for a dielectric barrier discharge plasma actuator investigated in context of plasma-assisted flow control. The electrical aspects, the plasma morphology, the body force production, and the two-component time-resolved electric wind produced over a single ac period of signal are investigated. Results shown that square Waveform is optimal in terms of body force and mean electric wind production, but the velocity fluctuations are enhanced by using a Sinusoidal Waveform. The time-resolved measurements of the produced velocity demonstrate that the electromechanical conversion mechanism is quasi-linear in the vicinity of the discharge.