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相关概念视频

IR Frequency Region: Fingerprint Region01:03

IR Frequency Region: Fingerprint Region

IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the C=O, C=N, and C=C occur between 1600–1850 cm−1.
The...
Fast Fourier Transform01:10

Fast Fourier Transform

The Fast Fourier Transform (FFT) is a computational algorithm designed to compute the Discrete Fourier Transform (DFT) efficiently. By breaking down the calculations into smaller, manageable sections, the FFT significantly reduces the computational complexity involved. Direct computation of an N-point DFT requires N2 complex multiplications, whereas the FFT algorithm needs only (N/2)log⁡2N multiplications, offering a much faster performance.
The computational efficiency of the FFT becomes...

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相关实验视频

Updated: Jun 23, 2026

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
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使用快速隐形频率标记 (RIFT) 来检测语音规划和理解表示之间的神经相互作用.

Cecília Hustá1, Antje Meyer1,2, Linda Drijvers1,2

  • 1Max Planck Institute for Psycholinguistics, Nijmegen, The Netherlands.

Neurobiology of language (Cambridge, Mass.)
|July 30, 2025
PubMed
概括
此摘要是机器生成的。

语音规划涉及理解理解和计划的语音表示如何相互作用. 这项研究使用了EEG和快速隐形频率标记 (RIFT) 来调查语音制作期间的注意力分布和神经相互作用.

关键词:
关注注意力注意力注意力注意力了解理解理解理解理解电脑电图 (EEG) 是一种电脑电图.互动互动互动互动互动.快速隐形频率标记 (RIFT) 是一个技术.演讲规划 演讲规划

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fMRI Mapping of Brain Activity Associated with the Vocal Production of Consonant and Dissonant Intervals
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Interaction between Phonological and Semantic Processes in Visual Word Recognition using Electrophysiology
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相关实验视频

Last Updated: Jun 23, 2026

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
09:37

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Published on: July 5, 2015

9.2K
fMRI Mapping of Brain Activity Associated with the Vocal Production of Consonant and Dissonant Intervals
11:15

fMRI Mapping of Brain Activity Associated with the Vocal Production of Consonant and Dissonant Intervals

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Interaction between Phonological and Semantic Processes in Visual Word Recognition using Electrophysiology
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Interaction between Phonological and Semantic Processes in Visual Word Recognition using Electrophysiology

Published on: June 29, 2021

2.5K

科学领域:

  • 认知神经科学 认知神经科学
  • 心理语言学 心理语言学
  • 神经科学是一个神经科学.

背景情况:

  • 理解和计划语音之间的相互作用影响语言的产生.
  • 了解注意力分布和刺激相互作用的神经机制对于语言规划至关重要.

研究的目的:

  • 通过使用快速隐形频率标记 (RIFT) 调查对理解和语音规划刺激的注意力分布.
  • 检查听觉理解干扰器和视觉语音规划刺激之间的神经相互作用.

主要方法:

  • 使用了带有快速隐形频率标记 (RIFT) 的脑电图 (EEG).
  • 采用图片词干扰 (PWI) 范式与延迟命名.
  • 同时呈现了听觉分心器 (标记在54 Hz) 和视觉目标图像 (标记在68 Hz).

主要成果:

  • 观察到的清晰功率在54Hz和68Hz时增加,表明注意力分配.
  • 在基本频率上,在相关和非相关条件之间没有发现功率差异.
  • 与相关条件相比,在无关条件中检测到更大的互调频率功率差异,这表明神经相互作用更强.

结论:

  • 语音生产中的困难并非源于对刺激的注意力分配.
  • 处理挑战来自于由听觉和视觉刺激引起的概念的相互作用.
  • 在语音规划期间,在相关的条件下,刺激之间的神经相互作用可能会被降低.