Attentional modulation of informational masking on early cortical   representations of speech signals

doi:10.1016/j.heares.2015.11.002

CORC > 北京大学 > 心理与认知科学学院

	Attentional modulation of informational masking on early cortical representations of speech signals
	Zhang, Changxin ; Arnott, Stephen R. ; Rabaglia, Cristina ; Avivi-Reich, Meital ; Qi, James ; Wu, Xihong ; Li, Liang ; Schneider, Bruce A.
刊名	HEARING RESEARCH
	2016
关键词	Attention Informational masking Energetic masking Event-related potentials EVENT-RELATED POTENTIALS SOUNDS VERTICAL-BAR PASS NOISE MASKING PERCEIVED SPATIAL SEPARATION MISMATCH NEGATIVITY OLDER-ADULTS ENERGETIC MASKING TALKER FAMILIARITY CHINESE SPEECH RECOGNITION
DOI	10.1016/j.heares.2015.11.002
英文摘要	To recognize speech in a noisy auditory scene, listeners need to perceptually segregate the target talker's voice from other competing sounds (stream segregation). A number of studies have suggested that the attentional demands placed on listeners increase as the acoustic properties and informational content of the competing sounds become more similar to that of the target voice. Hence we would expect attentional demands to be considerably greater when speech is masked by speech than when it is masked by steady-state noise. To investigate the role of attentional mechanisms in the unmasking of speech sounds, event-related potentials (ERPs) were recorded to a syllable masked by noise or competing speech under both active (the participant was asked to respond when the syllable was presented) or passive (no response was required) listening conditions. The results showed that the long-latency auditory response to a syllable (vertical bar bi vertical bar), presented at different signal-to-masker ratios (SMRs), was similar in both passive and active listening conditions, when the masker was a steady-state noise. In contrast, a switch from the passive listening condition to the active one, when the masker was two-talker speech, significantly enhanced the ERPs to the syllable. These results support the hypothesis that the need to engage attentional mechanisms in aid of scene analysis increases as the similarity (both acoustic and informational) between the target speech and the competing background sounds increases. (C) 2015 Elsevier B.V. All rights reserved.; National High Technology Research and Development Program of China (863 program) [2015AA016306]; National Natural Science Foundation of China [31170985]; Natural Sciences and Engineering Research Council of Canada [RGPIN 995]; Canadian Institutes of Health Research [MOP 1539, TEA-12497]; [CJN13J004]; SCI(E); PubMed; ARTICLE; liangli@pku.edu.cn; bruce.schneider@utoronto.ca; 119-130; 331
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/416851]
专题	心理与认知科学学院信息科学技术学院
推荐引用方式 GB/T 7714	Zhang, Changxin,Arnott, Stephen R.,Rabaglia, Cristina,et al. Attentional modulation of informational masking on early cortical representations of speech signals[J]. HEARING RESEARCH,2016.
APA	Zhang, Changxin.,Arnott, Stephen R..,Rabaglia, Cristina.,Avivi-Reich, Meital.,Qi, James.,...&Schneider, Bruce A..(2016).Attentional modulation of informational masking on early cortical representations of speech signals.HEARING RESEARCH.
MLA	Zhang, Changxin,et al."Attentional modulation of informational masking on early cortical representations of speech signals".HEARING RESEARCH (2016).