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Test for Determinism and Nonlinearity in Near Infrared Spectroscopy Data

机译:测试近红外光谱数据中的确定性和非线性

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摘要

In this study, dynamical properties in brain activity have been analyzed by means of observed near infrared spectroscopy (NIRS) data at the area of brain of primary motor. Nonlinear properties are investigated by using the methods of delay vector variance (DVV) and data surrogate. The result shows that the underlying processes of the change of oxygen-ated-hemoglobin and deoxygenated-hemoglobin concentration are highly stochastic. The number of NIRS time series exhibiting nonlinearity in the task of imagery of movement is larger than that in the task of relax. In addition, the level of nonlinearity in such the dynamical processes is rather low.
机译:在这项研究中,大脑活动的动力学特性已经通过在主要运动者大脑区域观察到的近红外光谱(NIRS)数据进行了分析。通过使用延迟矢量方差(DVV)和数据替代方法研究非线性特性。结果表明,氧合血红蛋白和脱氧血红蛋白浓度变化的潜在过程是高度随机的。在运动图像任务中表现出非线性的NIRS时间序列的数量大于在放松任务中表现出的非线性。此外,这种动力学过程中的非线性程度很低。

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