Projections of Cochlear Nucleus Axons

这项研究旨在了解如何 听觉信息由神经进行加工和编码 耳蜗核中的细胞，大脑的一部分 与听觉有关的神经通路。 听觉 环境提供了丰富而复杂的 从不同的声音中获取信息 源 其中一些信息，如语音， 与我们密切相关，而其中大部分却被忽视了。 无关的噪音。 听觉中枢神经系统 将听觉信息转换成神经信号， 随后在大脑的不同层面进行分析。 为了理解听觉信息 处理发生时，这项研究正在进行， 确定听觉信息的哪些方面 由耳蜗中的神经细胞编码 以及耳蜗神经元发送信号的地方 大脑中的信息。 单神经活动 使用微电极记录和分析细胞 插入到单个神经元中， 刺激被记录，并且染料被注射到 神经细胞，以确定它使用组织学 技术. 通过定位和分析这个标记 神经元使用光学和电子显微镜，它是 可以回答一些基本问题， 包括：（1）某些类型的细胞是否编码特定的 听觉信号的一部分 (2)大脑的哪个部分 这些细胞传递信息给谁 (3)有哪些 不同类型神经元之间的相互作用 这些 研究对于理解如此复杂的 感觉系统为我们提供听觉体验 这对感知和认知至关重要 体验.

This research is directed towards understanding how auditory information is processed and coded by nerve cells in the cochlear nucleus, a portion of the brain pathways that are involved in hearing. The auditory environment provides a rich and complex array of information from a myriad of sounds from different sources. Some of this information, such as speech sounds, is highly relevant to us, while much of it is disregarded as extraneous noise. The auditory central nervous system converts auditory information into neural signals which are later analyzed at different levels in the brain. In order to understand how auditory information processing occurs, this research is being conducted to determine what aspects of auditory information are being coded by individual types of nerve cells in the cochlear nucleus as well as where cochlear neurons send this information in the brain. The activity of single nerve cells is recorded and analyzed using microelectrodes inserted into single neurons, the response to auditory stimulation is recorded, and a dye is injected into the nerve cell in order to identify it using histological techniques. By locating and analyzing this labelled neuron using both light and electron microscopy, it is possible to answer a number of basic questions which include: (1) Do certain types of cells encode specific parts of the auditory signal? (2) What part of the brain do these cells relay information to? (3) What are the interactions between individual types of neurons? These studies are essential to understanding how such a complex sensory system provides us with the experience of hearing that is so crucial to perception and cognitive experience.