Auditory midbrain representation of a break in interaural correlation

doi:10.1152/jn.00645.2015

CORC > 北京大学 > 心理与认知科学学院

	Auditory midbrain representation of a break in interaural correlation
	Wang, Qian ; Li, Liang
刊名	JOURNAL OF NEUROPHYSIOLOGY
	2015
关键词	envelope frequency-following responses inferior colliculus interaural correlation temporal fine structure FREQUENCY-FOLLOWING RESPONSES ENVELOPE-FOLLOWING RESPONSE TEMPORAL FINE-STRUCTURE RATS INFERIOR COLLICULUS SUPERIOR OLIVARY COMPLEX BRAIN-STEM BINAURAL UNMASKING CROSS-CORRELATION NUCLEUS LAMINARIS LATERAL LEMNISCUS
DOI	10.1152/jn.00645.2015
英文摘要	The auditory peripheral system filters broadband sounds into narrowband waves and decomposes narrowband waves into quickly varying temporal fine structures (TFSs) and slowly varying envelopes. When a noise is presented binaurally (with the interaural correlation being 1), human listeners can detect a transient break in interaural correlation (BIC), which does not alter monaural inputs substantially. The central correlates of BIC are unknown. This study examined whether phase locking-based frequency-following responses (FFRs) of neuron populations in the rat auditory midbrain [inferior colliculus (IC)] to interaurally correlated steady-state narrowband noises are modulated by introduction of a BIC. The results showed that the noise-induced FFR exhibited both a TFS component (FFRTFS) and an envelope component (FFREnv), signaling the center frequency and bandwidth, respectively. Introduction of either a BIC or an interaurally correlated amplitude gap (which had the summated amplitude matched to the BIC) significantly reduced both FFRTFS and FFREnv. However, the BIC-induced FFRTFS reduction and FFREnv reduction were not correlated with the amplitude gap-induced FFRTFS reduction and FFREnv reduction, respectively. Thus, although introduction of a BIC does not affect monaural inputs, it causes a temporary reduction in sustained responses of IC neuron populations to the noise. This BIC-induced FFR reduction is not based on a simple linear summation of noise signals.; National Natural Science Foundation of China [31470987]; "985" Project of Peking University; SCI(E); PubMed; ARTICLE; liangli@pku.edu.cn; 4; 2258-2264; 114
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/415853]
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	Wang, Qian,Li, Liang. Auditory midbrain representation of a break in interaural correlation[J]. JOURNAL OF NEUROPHYSIOLOGY,2015.
APA	Wang, Qian,&Li, Liang.(2015).Auditory midbrain representation of a break in interaural correlation.JOURNAL OF NEUROPHYSIOLOGY.
MLA	Wang, Qian,et al."Auditory midbrain representation of a break in interaural correlation".JOURNAL OF NEUROPHYSIOLOGY (2015).