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首页> 外文会议>Mediterranean Conference on Medical and Biological Engineering and Computing >A Novel Method of Measuring Autonomic Nervous System Pupil Dynamics Using Wavelet Analysis
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A Novel Method of Measuring Autonomic Nervous System Pupil Dynamics Using Wavelet Analysis

机译：一种使用小波分析测量自主神经系统瞳孔动力学的新方法

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This paper presents a Pupillometer that has been developed in order to detect the pupil's variation in time in a non-invasive way. The output signal of the equipment, a Pupil-Iogram, was analyzed using Time-Frequency Analysis with the aim of better understanding the brain signals' activity expressed in the human eye. The Autonomic Nervous System (ANS) is divided into the Sympathetic and Parasympathetic components and theoretically they are always competing with each other as a two oscillator model. The goal of this project is to demonstrate that these components can be identified and their frequency bands become more evident. It is known that the pupil contracts when the Sympathetic component of the ANS is inhibited and the pupil dilates due to the inhibition of the parasympathetic component of the ANS. Because the pupil constrictor muscle is supplied by parasympathetic fibers and the dilator by sympathetic fibers, autonomic disorders may be detected with the appliance of a light stimulus (unresponsiveness to light) or other alarm stimuli. With the present results we show that the signal from the pupil's variation has three major frequency bands, the first being 0.04-0.08 Hz band (LF - Low Frequency), the second being 0.10-0.70 (MF - Medium Frequency) and the third being 0.80 - 1.2 Hz band (HF - High Frequency). The MF and HF bands showed interesting results, from which we can infer a possible representation of the ANS activity.
机译：本文提出了一种瞳孔仪，该瞳计已经开发，以便以非侵入性方式检测学生的时间变化。使用时频分析分析设备的输出信号，瞳孔-SICH，目的是更好地理解人眼中表达的脑信号的活动。自主神经系统（ANS）分为同情和副交感神经组分，从理论上它们始终彼此竞争为两个振荡器模型。该项目的目标是证明可以识别这些组件，并且它们的频段变得更加明显。众所周知，当抑制ANS的交感量和瞳孔扩张由于抑制ANS的副交感神经组分时，瞳孔合同。因为瞳孔约束纤维由副交感纤维和扩张器通过交感神经纤维供应，所以可以用光刺激的器具（对光线）或其他警报刺激的器具来检测自主神经障碍。利用目前的结果表明，来自瞳孔变化的信号具有三个主要频带，第一个是0.04-0.08 Hz波段（LF - 低频），第二是0.10-0.70（MF中等频率）和第三个0.80 - 1.2 Hz带（HF - 高频）。 MF和HF频段显示有趣的结果，我们可以从中推断出ANS活动的可能表示。

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