Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

278
The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
278
Linear Approximation in Frequency Domain01:26

Linear Approximation in Frequency Domain

119
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
119
Distance Measurements by Taping01:18

Distance Measurements by Taping

72
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
72
Root-Locus Method01:19

Root-Locus Method

185
A cruise control system in a car is designed to maintain a specified speed automatically by adjusting the gas pedal. The system continuously measures the vehicle's speed and makes fine adjustments to the pedal to achieve this goal. The root locus method is particularly useful for understanding how the cruise control system's behavior changes under varying conditions, such as when the car goes uphill, downhill, or faces strong wind resistance.
This system can be represented by a block...
185
Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

491
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
491
Perception of Sound Waves01:01

Perception of Sound Waves

4.5K
The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
4.5K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Linking Brain Morphometry to Psychometric Measures and Energy-Metabolic Biomarkers in Adults With Autism Spectrum Disorder.

Autism research : official journal of the International Society for Autism Research·2026
Same author

Obsessive-compulsive symptoms and inflammatory brain changes detected using an innovative multimodal diagnostic work-up.

Journal of neuroimmunology·2026
Same author

[Autism spectrum disorders-Transition from adolescence into adulthood].

Der Nervenarzt·2026
Same author

Multi-voxel MR-spectroscopy signatures and associations with EEG network hyperexcitability and clinical symptomatology in borderline personality disorder.

Frontiers in psychiatry·2026
Same author

Reduced task adaptation and contextual awareness in autistic adults during facial emotion recognition: evidence from mixed-effects modeling and automated facial analysis.

Molecular autism·2026
Same author

Seeing elephants and drinking water from a porcelain vase - A case of septin-7 antibody-associated encephalitis presenting as a severe disorganized psychosis.

Translational psychiatry·2026

相关实验视频

Updated: Jul 28, 2025

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

14.7K

使用递归应用和投影MUSIC的源本地化,具有灵活的范围估计.

Lukas Hecker1,2,3,4,5, Ludger Tebartz van Elst1,5, Jürgen Kornmeier1,3,4,5

  • 1Department of Psychiatry and Psychotherapy, University of Freiburg Medical Center, Freiburg, Germany.

Frontiers in neuroscience
|May 31, 2023
PubMed
概括

我们开发了FLEX-MUSIC,这是一种用于磁电脑学 (M/EEG) 的新方法,可以准确地确定神经源位置和范围. 这种技术为M/EEG反向问题提供了更高的准确性和效率.

关键词:
多信号分类 (MUSIC) 是指多信号分类.电源成像 (ESI) 是一种电源成像技术.电脑电图 (EEG) 是一种电脑电图.反向问题反向问题磁脑电图 (MEG) 是一种磁脑电图.

更多相关视频

Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
09:09

Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody

Published on: September 27, 2024

475
A Method to Study Adaptation to Left-Right Reversed Audition
07:14

A Method to Study Adaptation to Left-Right Reversed Audition

Published on: October 29, 2018

6.6K

相关实验视频

Last Updated: Jul 28, 2025

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

14.7K
Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
09:09

Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody

Published on: September 27, 2024

475
A Method to Study Adaptation to Left-Right Reversed Audition
07:14

A Method to Study Adaptation to Left-Right Reversed Audition

Published on: October 29, 2018

6.6K

科学领域:

  • 神经科学是一个神经科学.
  • 生物物理学的生物物理.
  • 医疗成像医学成像

背景情况:

  • 磁脑电图 (M/EEG) 和电脑电图 (EEG) 为神经活动测量提供高时间分辨率,但空间分辨率有限.
  • 对于源部位定位至关重要的M/EEG反向问题是错误的,挑战现有方法.
  • 准确的来源定位对于理解大脑功能和临床应用,如诊断至关重要.

研究的目的:

  • 引入FLEX-MUSIC,这是一个新的多重信号分类的递归应用 (MUSIC) 方法,用于M/EEG.
  • 提高神经源定位的准确性和灵活性,包括估计活动大脑区域的范围.
  • 将FLEX-MUSIC的性能与其他已建立的M/EEG反向解决方案进行比较.

主要方法:

  • 开发了FLEX-MUSIC,一种递归方法,用于搜索单双极和日益扩大的双极集群.
  • 将FLEX-MUSIC应用于M/EEG数据,以恢复神经源的位置和空间范围.
  • 与其他反向方法比较FLEX-MUSIC的准确性,稀疏性估计和计算时间.

主要成果:

  • 与所有测试方法相比,FLEX-MUSIC在定位单个和扩展的神经源方面表现出卓越的准确性.
  • FLEX-MUSIC准确地估计了神经源的稀疏性 (r = 0.82),优于其他方法 (r ≤ 0.18).
  • FLEX-MUSIC表现出具有竞争力的计算时间,与eLORETA和另一种递归MUSIC方法相美,同时比贝叶斯方法更快.

结论:

  • FLEX-MUSIC是一种准确而有效的技术,用于解决错误的M/EEG反向问题.
  • 该方法可靠地估计神经源的范围,这与现有解决方案相比具有显著优势.
  • FLEX-MUSIC对推进神经科学研究和改善前手术诊断具有前途意义.