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相关概念视频

Autism Spectrum Disorder01:19

Autism Spectrum Disorder

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Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
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Classification of Titrimetric Analysis Based on Reaction Types01:01

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Titrimetric analysis in solution chemistry involves measuring the volume of solutions and is often called volumetric analysis. The standard solution of known concentration in the burette is called the titrant, whereas the solution of unknown concentration in the flask is called the analyte, or titrand. Titrimetric analyses can be classified into four types based on the reactions between the titrant and analyte.
Titrations between an acid and a base lead to neutralization reactions that form...
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The Electromagnetic Spectrum02:37

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The electromagnetic spectrum consists of all the types of electromagnetic radiation arranged according to their frequency and wavelength. Each of the various colors of visible light has specific frequencies and wavelengths associated with them, and you can see that visible light makes up only a small portion of the electromagnetic spectrum. Because the technologies developed to work in various parts of the electromagnetic spectrum are different, for reasons of convenience and historical...
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The Electromagnetic Spectrum01:24

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Electromagnetic waves are categorized according to their wavelengths and frequencies, giving the electromagnetic spectrum. These waves are classified as radio, infrared, ultraviolet, etc. Radio waves refer to electromagnetic radiation with wavelengths ranging from millimeters to kilometers. Radio waves are commonly used for audio communications (i.e., radios) and typically result from an alternating current in the wires of a broadcast antenna. They cover a broad wavelength range and are used...
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The human body maintains a precise pH range of arterial blood between 7.35 and 7.45. Deviations result in either acidosis (pH < 7.35) or alkalosis (pH > 7.45). These conditions are further classified as respiratory or metabolic disorders based on their underlying cause.
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When infrared (IR) radiation passes through a molecule, the bonds stretch or bend by absorbing the radiation. This absorption creates the molecule's absorption spectrum, which is the plot of its percentage transmittance versus wavenumber.
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Testing Sensory and Multisensory Function in Children with Autism Spectrum Disorder
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基于Lean-NET的局部大脑连接组分析用于自闭症谱系障碍分类.

Aoumria Chelef1, Demet Yuksel Dal2, Mahmut Ozturk3

  • 1Department of Biomedical Engineering, Institute of Graduate Studies, Istanbul University-Cerrahpasa, Istanbul 34320, Türkiye.

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概括

这项研究引入了一种使用功能性大脑连接来预测自闭症谱系障碍 (ASD) 的新方法. 在静止状态fMRI数据上的图形学习在区分自闭症和典型发育个体方面取得了高准确性.

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自闭症谱系障碍 ASD功能选择 功能选择图表学习学习图表学习当地图表的指标.rs-FMRI 大胆的信号.稀疏的功能性大脑连接体 (精益网)支持矢量机器 (SVM) 的使用.

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科学领域:

  • 神经科学是一个神经科学.
  • 医疗成像医学成像
  • 机器学习 机器学习

背景情况:

  • 自闭症谱系障碍 (ASD) 是一种影响社会互动和沟通的神经发育状况.
  • 全球自闭症的患病率正在增加,需要先进的诊断工具.
  • 休息状态功能磁共振成像 (rs-fMRI) 提供了对大脑功能连接的见解.

研究的目的:

  • 开发和验证使用功能连接模式进行ASD预测的新方法.
  • 为了分析来自rs-fMRI数据的特定主体大脑连接体.
  • 为了评估图形学习指标的有效性,用于ASD的表征.

主要方法:

  • 使用了包含rs-fMRI数据的ABIDE II数据集.
  • 采用稀疏功能大脑连接体 (Lean-NET) 模型来构建特定主体的连接体.
  • 提取局部图表指标以量化区域网络属性,然后进行统计特征选择 (韦尔奇的t测试,FDR校正) 和支持矢量机 (SVM) 分类.

主要成果:

  • 在本地获得的图表指标显示出有显著的能力,以区分患有自闭症和典型发育 (TD) 个体之间的个人.
  • 在ASD预测中实现了从70%到91%的分类准确性.
  • 确定了与ASD相关的特定功能连接模式.

结论:

  • 图形学习方法显示出对准确的自闭症特征的巨大潜力.
  • 使用图表指标的功能连接分析是改善自闭症诊断的有希望的途径.
  • 精益网模型为分析ASD脑网络提供了一个强大的框架.