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Updated: Jul 7, 2026

High-Resolution Endocardial and Epicardial Optical Mapping in a Sheep Model of Stretch-Induced Atrial Fibrillation
09:17

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Published on: July 29, 2011

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峰值频率分析在肺静脉隔离过程中区分近场和远场信号

Peter G Ting1, Chirag R Barbhaiya1, Lior Jankelson1

  • 1NYU Langone Heart Rhythm Center, Division of Cardiology, Department of Internal Medicine, NYU School of Medicine, New York, New York.

Heart rhythm
|June 6, 2025
PubMed
概括

峰值频率 (PF) 分析量化了电图的近距离,在心脏剥离过程中区分近距离和远距离信号. 这种方法增强了肺静脉隔离 (PVI) 的识别,并改善了切除结果.

关键词:
在心房动中,心房动的移除.电解剖学映射绘制电解剖学映射电子图表 电子图表 电子图表费尔菲尔德 (Farfield) 是一个靠近场地附近的场地峰值频率的峰值频率是什么

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Aliasing01:18

Aliasing

Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original signal...
Frequency-Domain Interpretation of PD Control01:24

Frequency-Domain Interpretation of PD Control

Proportional-Derivative (PD) controllers are widely used in fan control systems to improve stability and performance. A fan control system can be effectively represented using a Bode plot to illustrate the impact of a PD controller through its transfer function. The Bode plot visually conveys how PD control modifies the fan's response across various frequencies, providing a frequency domain interpretation of the controller's behavior.
The proportional control gain, combined with the system's...