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Auditory Pathway01:15

Auditory Pathway

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Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking...
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The Cochlea01:13

The Cochlea

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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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Combined Shuttle-Box Training with Electrophysiological Cortex Recording and Stimulation as a Tool to Study Perception and Learning
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刺激特定预测错误神经元在小鼠的听觉皮层.

Nicholas J Audette1, David M Schneider2

  • 1Center for Neural Science, New York University, New York, New York 10003.

The Journal of neuroscience : the official journal of the Society for Neuroscience
|September 12, 2023
PubMed
概括
此摘要是机器生成的。

被训练来预测自己运动中的声音的小鼠对意外的听觉结果表现出特定的神经反应. 这揭示了听觉皮层中专门的预测错误神经元,这些神经元编码了特定的预期违规行为.

关键词:
行为行为行为行为行为.皮层 皮层 皮层预期 期望 期待 预期听到 听到 听到 听到 听到 听到 听到这里是鼠标鼠标鼠标鼠标鼠标鼠标.预测 预测 预测 预测

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科学领域:

  • 神经科学是一个神经科学.
  • 审计处理 审计处理
  • 预测编码 预测编码

背景情况:

  • 预测性处理依赖于将预期与感官体验进行比较.
  • 对意想不到的自我生成刺激的神经反应表明,感官皮质神经元可能编码预测错误 (PE).
  • 目前尚不清楚PEs是一般性的还是特定于刺激尺寸的,以及它们是否与运动相关的神经促进区分开来.

研究的目的:

  • 为了调查听力皮层神经元是否编码与自我生成的声音相关的特定预测错误 (PE).
  • 为了确定PE是否是维度特定的或一般的错误信号.
  • 为了识别听力皮层中预测错误信号的基础的神经机制.

主要方法:

  • 训练小鼠将运动行为与预期的听觉结果联系起来.
  • 听觉皮层活动被记录下来,而小鼠听到预期的声音或声音偏离特定的声学维度.
  • 分析神经反应以确定编码预测错误的神经元.

主要成果:

  • 听觉皮层表现出对跨越多个声学维度的自我生成声音的反应的抑制.
  • 确定了一种独特的听觉皮层神经元群体,通常对被动声音没有反应.
  • 这些神经元专门编码预测错误,响应一个或两个明显的违反预期,而不是通用的错误信号.
  • 预测错误神经元仅在具有学习运动感官期望的小鼠中丰富.

结论:

  • 关于自我生成的声音的皮层预测在多个同时维度中表现出特异性.
  • 皮层预测错误神经元编码特定的违反学习期望.
  • 这些发现表明,预测错误信号是在听觉皮层内的感官处理的早期被计算出来的.