Central Auditory Pathways in Directional Hearing
Central Auditory Pathways in Directional Hearing
复制标题
定向听觉中的中枢听觉通路
DOI：
--
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
E. Covey
中科院分区：
文献类型：
--
作者：
J. H. Casseday;E. Covey
中枢听觉系统由几条通路组成，这些通路在神经系统的某些水平上彼此平行，并在其他水平上会聚或发散。本章的目的是检查这些通路的结构，以了解它们在定向听力中的功能。图5-1介绍了可能涉及处理定向听觉线索的通路的主要组成部分，直到下丘。对这些通路的分析将开始于耳蜗核，听觉神经的所有纤维终止于此（参见Jones和Casseday，1979）。耳蜗核的前腹侧分裂是特别重要的，因为它是通向内侧和外侧上上级橄榄的通路的起源，这些结构具有理想的连接安排，以作为双耳听觉的中心。其他通路起源于耳蜗核，但绕过上级橄榄复合体，穿过脑干，终止于外侧丘系和下丘核（图5-1A）。这些也被认为是在这个分析中，即使他们可能没有什么关系，双耳互动在这第一级的处理。将提出，上行听觉通路可分为双耳和单耳通道。双耳通道是来自双耳的信息在上级橄榄整合的那些通路。每个单耳通道传输来自对侧耳朵的信息，而无需在上级橄榄处进行整合。在后面的章节中回顾的证据表明，双耳和单耳通道的这种分离持续到听觉皮层的水平。
The central auditory system consists of several pathways that parallel one another at some levels of the nervous system and converge or diverge at other levels. The purpose of this chapter is to examine the structure of these pathways for clues to their function in directional hearing. Figure 5-1 introduces the main components, up to the inferior colliculus, of pathways that may be involved in processing cues for directional hearing. The analysis of these pathways will begin at the cochlear nucleus, where all fibers of the auditory nerve terminate (cf Jones and Casseday, 1979). The anteroventral division of the cochlear nucleus is particularly important because it is the origin of pathways to the medial and lateral superior olives, structures that have connections ideally arranged to function as centers for binaural hearing. Other pathways originate in the cochlear nucleus but bypass the superior olivary complex and cross the brain stem to terminate in the nuclei of the lateral lemniscus and inferior colliculus (Fig. 5-1A). These are also considered in this analysis, even though they probably have little to do with binaural interaction at this first level of processing. It will be proposed that the ascending auditory pathways may be divided into binaural and monaural channels. The binaural channels are those pathways in which information from both ears is integrated at the superior olives. Each monaural channel transmits information from the contralateral ear without integration at the superior olives. Evidence reviewed in a later section suggests that this separation of binaural and monaural channels persists to the level of the auditory cortex.
影响因子：
2.5
作者：
JENKINS, WM;MASTERTON, RB
通讯作者：
MASTERTON, RB