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相关概念视频

The Cochlea01:13

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The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.
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Neuroplasticity01:01

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Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
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Hearing01:31

Hearing

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When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
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相关实验视频

Updated: May 10, 2025

Cochlear Implant Surgery and Electrically-evoked Auditory Brainstem Response Recordings in C57BL/6 Mice
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在耳植入后的跨模态功能可塑性.

Jamal Esmaelpoor1,2, Tommy Peng1,2, Beth Jelfs3

  • 1Department of Medical Bionics, University of Melbourne, 29 Royal Parade, Parkville, VIC 3052, Australia.

Cerebral cortex (New York, N.Y. : 1991)
|April 23, 2025
PubMed
概括

这项研究引入了一种新的方法来测量耳植入物 (CI) 用户的大脑可塑性. 在角回形中增强的交叉模式功能连接 (CMFC) 预测了植入后更好的语音理解.

关键词:
耳植入物可以进行耳植入.跨模式可塑性 跨模式可塑性fNIRSoutcome预测结果的预测功能连接性的功能连接性心理生理学相互作用 心理生理学相互作用

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科学领域:

  • 神经科学是一个神经科学.
  • 听觉神经科学 听觉神经科学
  • 神经可塑性 神经可塑性

背景情况:

  • 听力损失和耳植入 (CI) 诱导跨模态可塑性,但通过跨模态功能连接 (CMFC) 进行评估尚未得到充分研究.
  • 现有的方法,如心理生理相互作用 (PPI),在评估任务诱导的CMFC方面存在局限性.

研究的目的:

  • 开发和验证一种可靠的方法来评估CI用户中任务诱导的CMFC.
  • 调查任务诱导的CMFC,神经效率和接受耳植入物后语言失聪的个体的言语结果之间的关系.

主要方法:

  • 功能近红外光谱 (fNIRS) 测量了23名CI使用者和17名正常听力 (NH) 参与者的脑活动,这些参与者在听觉和视觉语言任务中进行了测量.
  • 任务诱导的CMFC在植入后1个月和1年被评估,以静止状态功能连接 (FC) 为基线.
  • 在植入植入植入植入植入植入植入植入植入植入植入植入植入植入植入植入植入植入植入植入植入植入植入植入.

主要成果:

  • 研究人员发现,对抗侧面任务诱导的CMFC和语音结果之间存在显著的负相关性,特别是涉及角性转移 (AG) 和视觉皮层.
  • 植入后一年,AG表现出较高的任务诱导CMFC比上旋,与神经效率原则保持一致.
  • 与NH参与者相比,CI使用者的任务诱导CMFC仍然较高,即使在一年后.

结论:

  • 任务诱导的CMFC是耳植入后跨模态可塑性的重要标志物.
  • 这项研究强调了角性在跨模态重组中的作用及其与CI受体语音表现的关联.
  • 开发的方法为了解神经适应和预测耳植入体用户的结果提供了有价值的工具.