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Lateralization

Lateralization

Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.

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相关实验视频

Updated: May 12, 2026

Assessment of Cerebral Lateralization in Children using Functional Transcranial Doppler Ultrasound fTCD

Assessment of Cerebral Lateralization in Children using Functional Transcranial Doppler Ultrasound fTCD

Published on: September 27, 2010

测量语言侧向化的方法:一项探索性研究,比较两种fMRI方法和功能性跨骨多普勒超声波.

Dorothy V M Bishop^1,2, Zoe V J Woodhead^1,2, Kate E Watkins^1,2

¹Wellcome Centre for Integrative Neuroimaging, Oxford, United Kingdom.

Neurobiology of language (Cambridge, Mass.)

|June 24, 2024

概括

此摘要是机器生成的。

来自功能性MRI数据的横向性指数计算的新镜像方法与功能性跨皮多普勒超声波比传统的工具箱方法更好地一致,特别是在异常大脑横向化的个体中.

关键词:

不对称的不对称性双边语言双边语言关闭关闭关闭关闭关闭功能性跨头多普勒超声波横向性的横向性感兴趣的地区.

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Functional Transcranial Doppler Ultrasound for Monitoring Cerebral Blood Flow

Functional Transcranial Doppler Ultrasound for Monitoring Cerebral Blood Flow

Published on: March 15, 2021

Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping

Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping

Published on: March 24, 2023

相关实验视频

Last Updated: May 12, 2026

Assessment of Cerebral Lateralization in Children using Functional Transcranial Doppler Ultrasound fTCD

Assessment of Cerebral Lateralization in Children using Functional Transcranial Doppler Ultrasound fTCD

Published on: September 27, 2010

Functional Transcranial Doppler Ultrasound for Monitoring Cerebral Blood Flow

Functional Transcranial Doppler Ultrasound for Monitoring Cerebral Blood Flow

Published on: March 15, 2021

Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping

Study Design for Navigated Repetitive Transcranial Magnetic Stimulation for Speech Cortical Mapping

Published on: March 24, 2023

科学领域:

神经成像是一种神经成像.
认知神经科学认知神经科学
大脑侧向化是什么?

背景情况:

功能磁共振成像 (fMRI) 是研究大脑侧面化的关键工具.
从fMRI数据计算横向性指数 (LI) 的现有方法可能不能准确地反映个人的大脑组织.

研究的目的:

将一种新的"镜像"方法与传统的"工具箱"方法进行比较,用于从fMRI数据中导出LI.
评估这些fMRI方法与非典型横向化个体的功能性跨皮多普勒超声波 (fTCD) 的一致性.

主要方法:

使用两种LI计算方法分析fMRI数据:LI工具箱 (加权启动平均值) 和一种新的镜像方法 (减去同源区域激活).
使用了31名参与者的数据,包括那些经过fTCD确认的异型横向化患者.
对于词生成和语义匹配任务,评估了与fTCD横向性的协议.

主要成果:

与工具箱方法相比,镜子方法与fTCD横向性有更好的一致性.
来自镜子方法的LI估计产生了较小的置信区间,表明更可靠的横向化.
工具箱方法导致参与者被分类为双边的比例更高.

结论:

新的镜子方法提供了一个更准确和可靠的方法来评估使用fMRI数据的大脑侧向化.
工具箱方法跨值的平均值和负激活值的潜在信息丢失可能导致差异.