Functionally integrated neural processing of linguistic and talker information: An event-related fMRI and ERP study

	Functionally integrated neural processing of linguistic and talker information: An event-related fMRI and ERP study
	Zhang, Caicai; Pugh, Kenneth R.; Mencl, W. Einar; Molfese, Peter J.; Frost, Stephen J.; Magnuson, James S.; Peng, Gang; Wang, William S-Y.
刊名	NeuroImage
	2016
英文摘要	Speech signals contain information of both linguistic content and a talker's voice. Conventionally, linguistic and talker processing are thought to be mediated by distinct neural systems in the left and right hemispheres respectively, but there is growing evidence that linguistic and talker processinginteract in many ways. Previous studies suggest that talker-related vocal tract changes are processed integrally with phonetic changes in the bilateral posterior superior temporal gyrus/superior temporal sulcus (STG/STS), because the vocal tract parameter influences the perception of phoneticinformation. It is yet unclear whether the bilateral STG is also activated by the integral processing of another parameter-pitch, which influences the perception of lexical tone information and is related to talker differences in tone languages. In this study, we conducted separate functional magnetic resonance imaging (fMRI) and event-related potential (ERP) experiments to examine the spatial and temporal loci of interactions of lexical tone andtalker-related pitch processing in Cantonese. We found that the STG was activated bilaterally during the processing of talker changes when listeners attended to lexical tone changes in the stimuli and during the processing of lexical tone changes when listeners attended to talker changes, suggesting that lexical tone and talker processing are functionally integrated in the bilateral STG. It extends the previous study, providing evidence for a generalneural mechanism of integral phonetic and talker processing in the bilateral STG. The ERP results showinteractions of lexical tone and talker processing500-800 ms after auditory word onset (a simultaneous posterior P3b and a frontal negativity). Moreover, there is some asymmetry in the interaction, such that unattended talker changes affect linguistic processing more than vice versa, which may be related to the ambiguity that talker changes cause in speech perception and/or attention bias to talker changes. Our findings have implications for understanding the neural encoding of linguistic and talkerinformation.
收录类别	SCI
原文出处	http://www.sciencedirect.com/science/article/pii/S1053811915007855
语种	英语
内容类型	期刊论文
源URL	[http://ir.siat.ac.cn:8080/handle/172644/9813]
专题	深圳先进技术研究院_集成所
作者单位	NeuroImage
推荐引用方式 GB/T 7714	Zhang, Caicai,Pugh, Kenneth R.,Mencl, W. Einar,et al. Functionally integrated neural processing of linguistic and talker information: An event-related fMRI and ERP study[J]. NeuroImage,2016.
APA	Zhang, Caicai.,Pugh, Kenneth R..,Mencl, W. Einar.,Molfese, Peter J..,Frost, Stephen J..,...&Wang, William S-Y..(2016).Functionally integrated neural processing of linguistic and talker information: An event-related fMRI and ERP study.NeuroImage.
MLA	Zhang, Caicai,et al."Functionally integrated neural processing of linguistic and talker information: An event-related fMRI and ERP study".NeuroImage (2016).