新的声音暴露驱动着听觉侧面化的动态变化,这些变化与斑马的感知学习有关
Basilio Furest Cataldo1, Lillian Yang2, Bryan Cabezas3
1Rutgers University, Department of Psychology, Piscataway, NJ, 08854, USA. bf287@scarletmail.rutgers.edu.
Communications biology
|November 27, 2023
概括
在歌鸟中,听觉皮层的侧面化随着新鲜的声音而动态转移,增强了歧视. 尾中体 (NCM) 的这种可塑性突出显示了经验如何塑造大脑功能.
科学领域:
- 神经科学是一个神经科学.
- 动物行为 动物行为
- 审计处理 审计处理
背景情况:
- 歌鸟在听觉皮层中表现出成人可塑性,反映了人类的听觉处理.
- 唱歌鸟高听力皮层 (caudomedial nidopallium,NCM) 的活动是侧向的,用于复杂的发音,类似于人类的语音处理.
研究的目的:
- 研究暴露在新型声学环境中的歌鸟在听力皮层侧向化中的动态变化.
- 为了确定长时间接触新型声音是否会改变典型的横向化模式并影响刺激歧视.
主要方法:
- 斑马被动暴露在一个新的异种 (金丝雀) 声学环境中长达21天.
- 急性,双边多单元电生理学记录活动在NCM.
- 测量外围耳听力潜力,以评估侧面化模式.
主要成果:
- 长期暴露 (长达21天) 在一个新的声环境中,导致听觉皮层中典型的右侧化模式的短暂反转.
- 这种横向化的动态模式在NCM中使用电生理学证实了.
- 长时间的暴露增强了鸟类在新奇,异种特异性刺激之间进行歧视的能力.
结论:
- 听力皮层侧面化是功能不稳定的,并通过新的感官体验动态调节.
- 这种动态的横向化在区分种族学上相关的新兴刺激方面发挥着作用.
- 需要进一步的研究来探索这种现象的复发,程度和跨模式的概括.
相关概念视频
Perception of Sound Waves
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 frequency...
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same frequency...
Auditory Pathway
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 the...
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
Auditory Perception
The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the cochlea, a...
Perceiving Loudness, Pitch, and Location
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 identifying...
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 identifying...


