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相关概念视频

Brain Imaging01:14

Brain Imaging

264
Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
264

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相关实验视频

Updated: Jul 26, 2025

Functional Mapping with Simultaneous MEG and EEG
06:04

Functional Mapping with Simultaneous MEG and EEG

Published on: June 14, 2010

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连接图谱绘制技术并不反映大脑中的功能梯度.

David M Watson1, Timothy J Andrews1

  • 1Department of Psychology and York Neuroimaging Centre, University of York, York YO10 5DD, UK.

NeuroImage
|June 20, 2023
PubMed
概括

来自数据分析的人工空间自相关性可以在大脑中创建虚幻的功能梯度. 这些使用连接图绘制识别的连接图梯度可能不可靠,需要谨慎的解释.

科学领域:

  • 神经科学是一个神经科学.
  • 脑部成像 脑部成像
  • 数据分析 数据分析

背景情况:

  • 功能梯度被提出为一个关键的大脑组织原则.
  • 连接图形映射从功能连接中重建这些梯度.
  • 在数据分析中存在诸如空间自相关性之类的潜在混.

研究的目的:

  • 调查空间自相对应是否可以创建虚幻的连接图梯度.
  • 评估平滑和插值对梯度重建的影响.
  • 通过不同的分析管道来确定连接点梯度的可靠性.

主要方法:

  • 随机生成的白噪声数据集.
  • 应用空间光滑和/或插值.
  • 在模拟和真实数据上执行连接图谱映射.
  • 重建了基于体积和表面的梯度.

主要成果:

  • 整平和插值诱导空间自相关性,创建虚幻的梯度.
  • 模拟的梯度与真实数据的梯度相似,但在统计学上有所不同.
  • 全球梯度对人工自相关的敏感性较小.
  • 梯度的可复制性取决于分析管道的具体情况.
关键词:
连接图片映射 连接图片映射功能连接性的功能连接性.神经梯度的神经梯度的神经梯度的神经梯度神经梯度神经梯度神经梯度神经梯度神经梯度神经梯度神经梯度神经梯度神经梯度

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Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
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Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012

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相关实验视频

Last Updated: Jul 26, 2025

Functional Mapping with Simultaneous MEG and EEG
06:04

Functional Mapping with Simultaneous MEG and EEG

Published on: June 14, 2010

18.0K
Brain Mapping Using a Graphene Electrode Array
10:32

Brain Mapping Using a Graphene Electrode Array

Published on: October 20, 2023

1.9K
Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
08:45

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012

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结论:

  • 连接的梯度可能会被人工空间自相关联所混.
  • 虚幻梯度可以通过常见的数据分析技术生成.
  • 连接的梯度需要谨慎的解释,因为潜在的分析混.
  • 梯度可复制性随着分析管道的选择而有很大差异.