A state-informed stimulation approach with real-time estimation of the instantaneous phase of neural oscillations by a Kalman filter

A state-informed stimulation approach with real-time estimation of the instantaneous phase of neural oscillations by a Kalman filter
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一种状态通知刺激方法,通过卡尔曼滤波器实时估计神经振荡的瞬时相位

DOI:
10.1088/1741-2552/ac2f7b
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发表时间:
2021
影响因子:
4
通讯作者:
Kitajo Keiichi
Kitajo Keiichi
中科院分区:
工程技术2区
文献类型:
--
作者:
Onojima Takayuki;Kitajo Keiichi

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我们提出了一种新的方法来估计瞬时振荡相位,以实现一个实时系统的状态通知的感觉刺激在脑电图(EEG)的experiments.ApproachThe方法使用卡尔曼滤波器为基础的预测来估计当前和未来的EEG信号。我们测试了我们的方法在实时situation.Main resultsOur方法的性能表现出更高的准确性,在预测的EEG相位比传统的自回归(AR)模型为基础的method.SignificanceA卡尔曼滤波器使我们能够很容易地估计的瞬时相位的EEG振荡的自动估计的AR模型的基础上实现的实时信号处理机。所提出的方法具有潜在的多功能应用,针对调制的EEG相位动力学和可塑性的大脑网络的感知或认知功能。
ObjectiveWe propose a novel method to estimate the instantaneous oscillatory phase to implement a real-time system for state-informed sensory stimulation in electroencephalography (EEG) experiments.ApproachThe method uses Kalman filter-based prediction to estimate current and future EEG signals. We tested the performance of our method in a real-time situation.Main resultsOur method showed higher accuracy in predicting the EEG phase than the conventional autoregressive (AR) model-based method.SignificanceA Kalman filter allows us to easily estimate the instantaneous phase of EEG oscillations based on the automatically estimated AR model implemented in a real-time signal processing machine. The proposed method has a potential for versatile applications targeting the modulation of EEG phase dynamics and the plasticity of brain networks in relation to perceptual or cognitive functions.
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