نتایج جستجو برای: fm modulation

تعداد نتایج: 161403  

2014
Felipe Fregni

Fibromyalgia (FM) is one of the most difficult chronic pain syndromes to treat, affecting 3% to 5% of the world population [1,2]. It is characterized by musculoskeletal pain and muscle tenderness, accompanied by depression, sleep disorders, fatigue [3], cognitive and mood disturbances, and decreased physical function [4], which leads to a decreased quality of life. Although FM is well studied, ...

2001
Michael Gordon David Poeppel

The abilities of human subjects to identify direction (up vs. down) of frequency modulation (FM) of individual tone sweeps at various rates of FM are examined, in particular, how fast FM sweeps can be without impairing a subject’s ability to accurately identify them as upward or downward. This ability may be relevant to the auditory encoding of rapid formant transitions, important perceptual cu...

2009
Victor Murray Eduardo S. Barriga Marios S. Pattichis Peter Soliz

Amplitude-Modulation FrequencyModulation (AM-FM) decompositions represent images using spatially-varying sinusoidal waves and their spatially-varying amplitudes. The model uses different scales and bandpass filters to characterize the wide range of frequencies that may be present in an image. In the past few years, as the understanding of its theory advanced, AM-FM has been used in a series of ...

2013
Ida Iranmanesh Rune Barnkob Henrik Bruus Martin Wiklund

Using a novel light-intensity method, we quantify for the first time the magnitude and spatial variance in acoustic energy density along a microchannel during acoustophoretic focusing of particles with frequency-modulated ultrasound. We compare the distribution in energy density between single-frequency (SF) and frequency-modulation (FM) actuation along the microchannel. In addition, we analyze...

2014
Maria Bernadete Renoldi Oliveira Gavi Dalton Valentin Vassalo Fabian Tadeu Amaral Danielle Constância Felício Macedo Pablo Lúcio Gava Eduardo Miranda Dantas Valéria Valim

OBJECTIVE Autonomic dysfunction is an important mechanism that could explain many symptoms observed in fibromyalgia (FM). Exercise is an effective treatment, with benefits potentially mediated through changes in autonomic modulation. Strengthening is one of the less studied exercises in FM, and the acute and chronic effects of strengthening on the autonomic system remain unknown. The objective ...

1995
David K. Asano

| A simple, robust processing strategy, called the Fading Magnitude { Integrate, Sample and Dump (FM{ISD) processor, is proposed for use with Limiter{Discriminator detection of CPM signals in Rayleigh, fast fading channels. The FM{ISD processor is introduced as a simpli cation of an optimal estimator{correlator receiver. The performance is compared to a standard integrator processor and found t...

Journal: :Journal of neurophysiology 2000
Y Zhang N Suga

In the Jamaican mustached bat, Pteronotus parnellii parnellii, one of the subdivisions of the primary auditory cortex is disproportionately large and over-represents sound at approximately 61 kHz. This area, called the Doppler-shifted constant frequency (DSCF) processing area, consists of neurons extremely sharply tuned to a sound at approximately 61 kHz. We found that a focal activation of the...

2007
Raquel E. Gur Ruben C. Gur Xiaoying Wu Dinggang Shen Monica E. Calkins

ackground: A number of studies have provided evidence for genetic modulation of brain structure in unaffected family members (FM) of chizophrenia patients using conventional volumetric analysis. High-dimensional pattern classification methods have been reported to ave the capacity to determine subtle and spatially complex structural patterns that distinguish schizophrenia patients from healthy ...

2000
B. T. G. TAN S. L. GAN

Asymmetrical frequency modulation (AFM) as proposed by Palamin et al. (1988) offers greater flexibility in the shaping of the spectra of synthesized waveforms as compared to normal frequency-modulation (FM) synthesis. The feasibility of using AFM synthesis for the real-time generation of waveforms of musical instruments is demonstrated using a DSP56000 digital signal processor to implement the ...

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