Masking of speech in people with first-episode schizophrenia and people   with chronic schizophrenia

doi:10.1016/j.schres.2011.09.019

CORC > 北京大学 > 心理与认知科学学院

	Masking of speech in people with first-episode schizophrenia and people with chronic schizophrenia
	Wu, Chao ; Cao, Shuyang ; Zhou, Fuchun ; Wang, Chuanyue ; Wu, Xihong ; Li, Liang
刊名	schizophrenia research
	2012
关键词	Schizophrenia Speech perception Energetic masking Informational masking Content priming Voice priming PERCEIVED SPATIAL SEPARATION INFORMATIONAL MASKING OLDER-ADULTS WORKING-MEMORY ENERGETIC MASKING COMPETING SPEECH CHINESE SPEECH PERCEPTION COMPREHENSION RECOGNITION
DOI	10.1016/j.schres.2011.09.019
英文摘要	In "cocktail-party" environments, although listeners feel it difficult to recognize attended speech due to both energetic masking and informational masking, they can use various perceptual/cognitive cues, such as content and voice primes, to facilitate their attention to target speech. In patients with schizophrenia, both speech-perception deficits and increased vulnerability to masking stimuli generally occur. This study investigated whether speech recognition in first-episode patients (FEPs) and chronic patients (CPs) of schizophrenia is more vulnerable to noise masking and/or speech masking than that in demographics-matched-healthy controls, and whether patients with schizophrenia can use primes to unmask speech. In a trial under the priming condition, before the target sentence containing three keywords was co-presented with a noise or speech masker, the prime (early part of the sentence including the first two keywords) was recited in quiet with the target-speaker's voice. The results show that in patients, target-speech recognition was more impaired under speech-masking conditions than noise-masking conditions, and the impairment in CPs (n = 22) was larger than that in FEPs (n = 12). Although working memory for holding prime-content information in patients, especially CPs, was more vulnerable to masking, especially speech masking, than that in healthy controls, patients were still able to use the prime to unmask the last keyword. Thus, in "cocktail-party" environments, speech recognition in people with schizophrenia is more vulnerable to masking, particularly informational masking, and the speech-recognition impairment augments as the illness progresses. However, people with schizophrenia can use the content/voice prime to reduce energetic masking and informational masking of target speech. (C) 2011 Elsevier B.V. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000299492900006&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Psychiatry; SCI(E); PubMed; SSCI; 8; ARTICLE; 1; 33-41; 134
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/162810]
专题	心理与认知科学学院
推荐引用方式 GB/T 7714	Wu, Chao,Cao, Shuyang,Zhou, Fuchun,et al. Masking of speech in people with first-episode schizophrenia and people with chronic schizophrenia[J]. schizophrenia research,2012.
APA	Wu, Chao,Cao, Shuyang,Zhou, Fuchun,Wang, Chuanyue,Wu, Xihong,&Li, Liang.(2012).Masking of speech in people with first-episode schizophrenia and people with chronic schizophrenia.schizophrenia research.
MLA	Wu, Chao,et al."Masking of speech in people with first-episode schizophrenia and people with chronic schizophrenia".schizophrenia research (2012).