DYNAMICAL COMPLEXITY ANALYSIS OF SACCADIC EYE MOVEMENTS IN TWO DIFFERENT PSYCHOLOGICAL CONDITIONS.

IF 2.1 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY Romanian Reports in Physics Pub Date : 2014-01-01
C Aştefănoaei, D Creangă, E Pretegiani, L M Optican, A Rufa
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Abstract

Saccadic eye movements of a normal subject were assessed through semi-quantitative analysis algorithms based on linear and non-linear test application in order to highlight the dynamics type characterizing saccadic neural system behavior. These movements were recorded during a simple visually-guided saccade test and one with a cognitive load involving button pressing to show a decision. Following the application of specific computational tests, chaotic dynamical trend dominancy was mostly revealed with some differences between the two saccade recording conditions: auto-correlation time was increased from 170 to 240 by cognitive task superposition and the Hurst exponent was enhanced from 0.52 to 0.76, denoting more persistence in the dynamics of saccadic system during increased neural activity related to cognitive task.

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两种不同心理状态下跳眼运动的动态复杂性分析。
通过基于线性和非线性测试应用的半定量分析算法对正常受试者的跳眼运动进行评估,以突出表征跳眼神经系统行为的动态类型。这些动作是在一个简单的视觉引导的扫视测试和一个认知负荷的测试中记录下来的,包括按下按钮来显示一个决定。在特定计算测试的应用下,两种扫视记录条件之间存在一定差异,主要表现为混沌动态趋势优势:认知任务叠加使自相关时间从170增加到240,Hurst指数从0.52增加到0.76,表明在认知任务相关神经活动增加时,扫视系统的动态持久性更强。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Romanian Reports in Physics
Romanian Reports in Physics 物理-物理:综合
CiteScore
4.20
自引率
29.60%
发文量
0
审稿时长
4-8 weeks
期刊介绍: Romanian Reports in Physics is a journal publishing physics contributions in the fields of: 1. Mathematical and General Physics 2. Nuclear Physics. Particle Physics. Astroparticle Physics 3. Atomic and Molecular Physics 4. Plasma Physics 5. Condensed Matter 6. Optics & Quantum Electronics 7. Biophysics & Medical Physics. Environmental Physics 8. Physical Methods and Instrumentation 9. Earth Physics
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