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相关概念视频

Area Computation by the Alternative Coordinate Method01:24

Area Computation by the Alternative Coordinate Method

The alternative coordinate method, also known as the Shoelace Formula, is a technique for determining the area of a traverse using Cartesian coordinates. This method relies on the sequential arrangement of x and y coordinates for each point of the shape, ensuring accuracy and ease of application.In this approach, each corner's x and y coordinates are listed as fractions, with the x-coordinate as the numerator and the y-coordinate as the denominator. These coordinates are arranged sequentially...
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point served as...

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相关实验视频

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Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex
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负运动区域:使用立体电脑电图进行功能连接.

Cristina Ghita1, Irina Oane1, Ioana Mindruta1

  • 1Neurology Department, Medical Faculty, Carol Davila University of Medicine and Pharmacy Bucharest; 8 Eroii Sanitari Boulevard 8, Bucharest, Romania; Epilepsy Monitoring Unit, Neurology Department, Emergency University Hospital Bucharest; 169 Splaiul Independentei Street, Bucharest, Romania.

NeuroImage
|February 22, 2026
PubMed
概括

这项研究绘制了对抑制运动至关重要的负运动网络的地图,在患者中使用立体电脑摄影. 该网络显示左半球占主导地位,关键枢纽位于前运动前额头区域.

关键词:
这就是SEEGEG的意义.带状皮层 (Cingulate cortex) 是一种带状皮层.功能连接性的功能连接性负动力区域是一个负动力区域.负的汽车网 负的汽车网

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A Multimodal Imaging- and Stimulation-based Method of Evaluating Connectivity-related Brain Excitability in Patients with Epilepsy
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科学领域:

  • 神经科学是一个神经科学.
  • 发动机控制器的控制器
  • 发病学 (Epileptology) 是一个专业的学科.

背景情况:

  • 负运动区域是皮质区域,当被刺激时,导致无法启动或维持自愿运动.
  • 了解负电机网络对于理解电机控制和规划至关重要.
  • 以前的研究还没有完全阐明这个网络的本地化和功能连接.

研究的目的:

  • 绘制负电机网络的本地化和功能连接.
  • 确定关键的大脑区域和中心参与负面运动表现.
  • 为了研究负运动网络中的半球不对称性.

主要方法:

  • 在225名耐药焦点患者中利用立体电脑电图 (SEEG).
  • 分析了41例引起负动力反应的高频内刺激.
  • 使用h2相关系数,信号间依赖性和合方向评估功能连接性.

主要成果:

  • 从多个皮质区域引起负运动反应,包括补充运动区域,前运动皮质和前额叶皮质.
  • 负运动网络显示出不对称的表示,在左半球比右半球更广泛.
  • 前运动前额头区域作为主要枢纽,与岛屿皮层和额头骨也涉及.

结论:

  • 该研究提供了使用SEEG.的负动力车网的第一个详细地图.
  • 半球不对称性存在,左半球的刺激值较低.
  • 这些发现增强了我们对大脑中运动控制和抑制过程的理解.