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相关概念视频

Multiple Comparison Tests01:13

Multiple Comparison Tests

4.0K
Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
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Statistical Significance01:50

Statistical Significance

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Once data is collected from both the experimental and the control groups, a statistical analysis is conducted to find out if there are meaningful differences between the two groups. A statistical analysis determines how likely any difference found is due to chance (and thus not meaningful). In psychology, group differences are considered meaningful, or significant, if the odds that these differences occurred by chance alone are 5 percent or less. Stated another way, if we repeated this...
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相关实验视频

Updated: Sep 11, 2025

Simultaneous Transcranial Alternating Current Stimulation and Functional Magnetic Resonance Imaging
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Simultaneous Transcranial Alternating Current Stimulation and Functional Magnetic Resonance Imaging

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一致的激活差异与一致的激活差异:评估元分析对比

Vincent Küppers1,2, Edna C Cieslik1,3, Lennart Frahm1,4

  • 1Institute of Neuroscience and Medicine, Brain and Behaviour (INM-7), Research Center Jülich, Jülich, Germany.

Imaging neuroscience (Cambridge, Mass.)
|August 13, 2025
PubMed
概括
此摘要是机器生成的。

与标准元分析相比,神经成像中的元分析对比产生了较少,但有效的结果. 在捕捉相似的大脑区域时,它们可能会错过一些激活,特别是在重叠的区域.

关键词:
激活可能性估计估计.方法评价方法评价方法评价神经成像的元分析.可复制性的可复制性研究综合研究综合强大的比较 强大的比较

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Transferring Cognitive Tasks Between Brain Imaging Modalities: Implications for Task Design and Results Interpretation in fMRI Studies
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Transferring Cognitive Tasks Between Brain Imaging Modalities: Implications for Task Design and Results Interpretation in fMRI Studies

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Transferring Cognitive Tasks Between Brain Imaging Modalities: Implications for Task Design and Results Interpretation in fMRI Studies
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科学领域:

  • 神经成像研究研究的神经成像.
  • 认知神经科学是一种认知神经科学.
  • 大脑绘制地图.

背景情况:

  • 基于坐标的元分析使神经成像结果之间的统计比较成为可能.
  • 超分析对比是用于比较不同超分析结果的新兴工具.
  • 超分析对比和传统超分析之间的关系需要经验研究.

研究的目的:

  • 在神经成像中实证地研究元分析对比和标准元分析之间的关系.
  • 通过这两种方法在不同认知领域中比较发现的大脑区域.
  • 评估元分析对比的有效性和局限性.

主要方法:

  • 利用来自工作记忆,认知干扰和情绪处理领域的四个神经成像数据集.
  • 比较了实验水平对比度 (条件A>条件B) 的标准元分析与元分析对比度 (元分析A>元分析B) 的结果.
  • 对两种方法分析了空间激活模式和确定的大脑区域的数量.

主要成果:

  • 分析对比确定了与标准分析相似的大脑区域,但具有不同的空间模式.
  • 使用元分析对比检测到的脑区域较少,特别是在激活重叠的区域.
  • 一个数据集在元分析对比中显示了额外的区域,可能是由于特定任务的影响.

结论:

  • 与标准的元分析相比,元分析对比提供了一个有效的,但较少的脑活动表示.
  • 这些对比并不是经典元分析的直接替代品,因为在确定的地区存在潜在的差异.
  • 需要进一步的研究来了解元分析对比和标准元分析一致的条件.