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帕金森病模型脑电活动节律的智能神经监督网络设计

Design of Intelligent Neuro-Supervised Networks for Brain Electrical Activity Rhythms of Parkinson's Disease Model.

作者信息

Mukhtar Roshana, Chang Chuan-Yu, Raja Muhammad Asif Zahoor, Chaudhary Naveed Ishtiaq

机构信息

Department of Computer Science and Information Engineering, Graduate School of Engineering, Science and Technology, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan.

Department of Computer Science and Information Engineering, National Yunlin University of Science and Technology, Yunlin 64002, Taiwan.

出版信息

Biomimetics (Basel). 2023 Jul 21;8(3):322. doi: 10.3390/biomimetics8030322.

Abstract

The objective of this paper is to present a novel design of intelligent neuro-supervised networks (INSNs) in order to study the dynamics of a mathematical model for Parkinson's disease illness (PDI), governed with three differential classes to represent the rhythms of brain electrical activity measurements at different locations in the cerebral cortex. The proposed INSNs are constructed by exploiting the knacks of multilayer structure neural networks back-propagated with the Levenberg-Marquardt (LM) and Bayesian regularization (BR) optimization approaches. The reference data for the grids of input and the target samples of INSNs were formulated with a reliable numerical solver via the Adams method for sundry scenarios of PDI models by way of variation of sensor locations in order to measure the impact of the rhythms of brain electrical activity. The designed INSNs for both backpropagation procedures were implemented on created datasets segmented arbitrarily into training, testing, and validation samples by optimization of mean squared error based fitness function. Comparison of outcomes on the basis of exhaustive simulations of proposed INSNs via both LM and BR methodologies was conducted with reference solutions of PDI models by means of learning curves on MSE, adaptive control parameters of algorithms, absolute error, histogram error plots, and regression index. The outcomes endorse the efficacy of both INSNs solvers for different scenarios in PDI models, but the accuracy of the BR-based method is relatively superior, albeit at the cost of slightly more computations.

摘要

本文的目的是提出一种新颖的智能神经监督网络(INSN)设计,以研究帕金森病(PDI)数学模型的动力学,该模型由三个微分方程类控制,用于表示大脑皮层不同位置的脑电活动测量节律。所提出的INSN通过利用多层结构神经网络的技巧构建,并采用Levenberg-Marquardt(LM)和贝叶斯正则化(BR)优化方法进行反向传播。通过在PDI模型的各种场景中改变传感器位置,利用可靠的数值求解器(通过Adams方法)为INSN的输入网格和目标样本制定参考数据,以测量脑电活动节律的影响。通过基于均方误差的适应度函数优化,将针对两种反向传播过程设计的INSN应用于任意分割为训练、测试和验证样本的创建数据集。通过MSE学习曲线、算法的自适应控制参数、绝对误差、直方图误差图和回归指数,将通过LM和BR方法对所提出的INSN进行详尽模拟的结果与PDI模型的参考解进行比较。结果证实了两种INSN求解器在PDI模型不同场景下的有效性,但基于BR的方法的准确性相对更高,尽管计算量略有增加。

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