Temporal coding in the auditory cortex.
Temporal coding in the auditory cortex.
复制标题
DOI：
10.1016/b978-0-444-62630-1.00005-6
复制
发表时间：
2015-01-01
影响因子：
--
通讯作者：
Giraud, Anne-Lise
中科院分区：
文献类型：
--
作者：
Arnal, Luc H;Poeppel, David;Giraud, Anne-Lise
语音是一种复杂的声信号，在多个时间尺度上呈现准周期结构。记录在皮层的综合神经信号在不同的时间尺度上也表现出周期性。在本章中，我们概述了可能允许听觉皮层分割和编码连续语音的神经机制。本章的重点是人类听觉皮层如何使用声信号的时间结构来提取音素和音节，这是连接语音的两个主要组成部分。我们认为听觉皮层中集体神经活动的准周期结构代表了将连续语音分割成可变大小的语言成分的理想机械基础设施。
Speech is a complex acoustic signal showing a quasiperiodic structure at several timescales. Integrated neural signals recorded in the cortex also show periodicity at different timescales. In this chapter we outline the neural mechanisms that potentially allow the auditory cortex to segment and encode continuous speech. This chapter focuses on how the human auditory cortex uses the temporal structure of the acoustic signal to extract phonemes and syllables, the two major constituents of connected speech. We argue that the quasiperiodic structure of collective neural activity in auditory cortex represents the ideal mechanical infrastructure to fractionate continuous speech into linguistic constituents of variable sizes.