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首页> 外文会议>EUSIPCO 2007;European signal processing conference >SPECTRAL ANALYSIS TECHNIQUES OF STATIONARY POINT PROCESSES USEDFOR THE ESTIMATION OF CROSS-CORRELATION: APPLICATION TO THESTUDY OF A NEUROPHYSIOLOGICAL SYSTEM
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SPECTRAL ANALYSIS TECHNIQUES OF STATIONARY POINT PROCESSES USEDFOR THE ESTIMATION OF CROSS-CORRELATION: APPLICATION TO THESTUDY OF A NEUROPHYSIOLOGICAL SYSTEM

机译：用于交叉相关估计的定点过程的光谱分析技术：在神经生理系统研究中的应用

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摘要

In this work we apply spectral analysis techniques ofbivariate stationary point processes for the estimation of thecross-correlation (CC). This is used for the study of acomponent of the neurophysiological system called musclespindle. We are interested in the effect of different stimuli tothe function of the muscle spindle by recording the responsefrom the Ia sensory axon transferred to the spinal cord. Theestimate of the cross-correlation, a measure of theassociation between the input and the output of the musclespindle, is obtained using the periodogram statistic which isa function of the frequency domain. It is shown that theasymptotic distribution of the estimator is Normal. Thusapproximate 95% pointwise confidence intervals for theestimates of the modified CC can be computed which show ifthe behaviour of the system is excitatory and/or inhibitory.
机译：在这项工作中，我们将使用双变量平稳点过程的频谱分析技术来估计互相关（CC）。这用于研究神经生理系统中称为肌肉主轴的组件。我们通过记录转移到脊髓的Ia感觉轴突的响应，对不同刺激对肌肉纺锤体功能的影响感兴趣。使用周期图统计量（频率域的函数）获得互相关的估计值，即肌肉主轴的输入和输出之间的关联度。结果表明，估计量的渐近分布为正态分布。因此，可以计算出修改后的CC估计值的大约95％的逐点置信区间，该区间显示系统的行为是兴奋性的还是抑制性的。

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  • 会议地点 Poznan(PL);Poznan(PL)
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    George J. Karavasilis; Alexandros G. Rigas;

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    Department of Electrical and Computer Engineering Democritus University of ThraceV. Sofias 12 GR-67100 Xanthi Greece;

    Department of Electrical and Computer Engineering Democritus University of ThraceV. Sofias 12 GR-67100 Xanthi Greece rigas@ee.duth.gr;

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