Power Spectral Analysis of Auditory Brain Stem Responses

Suzuki, Tokuro; Sakabe, Nagamasa; Miyashita, Yoshikazu

doi:10.4295/audiology.24.173

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…Most authors, except Elberling et al [7] who believed that the main frequency component was lower than 250 Hz, have concluded that there are three peaks in the power spectrum of ABR at a sufficient level of stimulation [9,10,11]. Our data also shows three peaks with troughs at 300 to 450 Hz, 600 to 800 Hz and 1200 to 1500 Hz (figure 2).…”

Section: Power Spectrum Analysis Of Abrsupporting

confidence: 58%

Application of fast Fourier transform to auditory evoked brainstem response

Aoyagi

Harada

1988

Medical Informatics

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The current application of fast Fourier transform (FFT) to the analysis of auditory evoked brainstem response (ABR) is reviewed under four categories: (1) digital filtering, which facilitates isolation of fast and slow components from the same ABR wave, is the most common use of FFT; (2) power spectral analysis: this seems significant in ABR for isolating and analysing slow, middle and fast components from the Fourier components around each peak of the power spectrum with a three-peak pattern by inverse fast Fourier transform; (3) cross correlation function shows the relationship between two signals being analysed from the viewpoint of their phase. Clinical applications are used in the diagnosis of multiple sclerosis and for automatic detection of ABR; and (4) phase spectral analysis: the synchrony measure method (Fridman, 1984) is a type of phase spectral analysis. In this method, the phase variances of selected Fourier components are calculated, from among 10 averaging groups of 200 sweeps in the same stimulating conditions, to determine the presence or absence of a response. The clinical application of this method to the automatic evaluation of ABR is discussed.

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Section: Power Spectrum Analysis Of Abrsupporting

confidence: 58%

Application of fast Fourier transform to auditory evoked brainstem response

Aoyagi

Harada

1988

Medical Informatics

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“…Satoru Suzuki, Hirohito Miyashita, etc. [13] produced a sintered body of the tungsten powders at a temperature of 1600 ℃ by HP, and the sintered body had a relative density of 93%. Then it was subjected to HIP at a temperature of 1700 ℃, and the sintered body of the tungsten powders had a relative density of 99% or more, as well as an average crystal grain size of 100 μm or less.…”

Section: Performance Characterizationmentioning

confidence: 99%

Progresses on Development of Manufacturing Methods of High Purity Tungsten Targets

Ding

2020

MSF

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Tungsten has many excellent properties such as high melting point, high electrical conductivity, high electromigration resistance, high electron emission coefficient, high thermal stability and so on. Because of these excellent properties, high purity tungsten targets have wide applications and development prospects in the integrated circuit (IC) industry. In this paper, some manufacturing methods of tungsten targets was summarized and analyzed. The high melting point of tungsten makes powder metallurgy (PM) be the manufacturing methods of tungsten targets. After preforming of the tungsten powders, some sintering and densification processes like atmosphere pressure sintering, Hot Pressing (HP), Hot Isostatic Pressing(HIP) have been carried out. The grain size and the density of the tungsten targets is different by different manufacturing methods.

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Power Spectral Analysis of Auditory Brain Stem Responses

Cited by 2 publications

References 15 publications

Application of fast Fourier transform to auditory evoked brainstem response

Application of fast Fourier transform to auditory evoked brainstem response

Progresses on Development of Manufacturing Methods of High Purity Tungsten Targets

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