Spectral vs. temporal auditory processing in specific language impairment: a developmental ERP study.
Spectral vs. temporal auditory processing in specific language impairment: a developmental ERP study.
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DOI：
10.1016/j.bandl.2009.04.003
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发表时间：
2009-09
影响因子：
2.5
通讯作者：
Townsend, J.
中科院分区：
文献类型：
--
作者：
Ceponiene, R.;Cummings, A.;Wulfeck, B.;Ballantyne, A.;Townsend, J.
语言前感觉障碍，特别是在“时间”处理，已牵连到发展性语言障碍（LI）。然而，最近的证据一直模棱两可的数据表明，在频谱域的问题。本研究探讨了事件相关电位（ERP）措施的听觉感觉时间和频谱处理，以及它们的相互作用，在典型的儿童和LI（7-17岁，每组n=25）。刺激是3 CV音节和3个辅音到元音的过渡（频谱扫描）孤立的音节。这6个刺激中的每一个都出现在3个持续时间中（过渡：20，50和80 ms;音节：120，150和180 ms）。行为上，与LI组表现出较低的音节歧视与长和短的刺激。在ERP中，在LI组中观察到长潜伏期负波（N2-N4峰）减少和P2峰发育短暂增强的趋势。一些，但不是所有的，ERP指标的频谱处理也显示出减少的趋势，在组与LI特别是在响应音节。重要的是，过渡N2-N4峰的措施与表达语言能力的LI儿童。没有组的差异依赖于刺激持续时间。因此，声音的短暂性并不能解释这些LI儿童的光谱分辨率降低。相反，结果表明，在更高层次的听觉感觉处理的声学特征整合的赤字。观察到的成熟轨迹表明，一个非线性的发展偏差，而不是简单的延迟。
Pre-linguistic sensory deficits, especially in “temporal” processing, have been implicated in developmental Language Impairment (LI). However, recent evidence has been equivocal with data suggesting problems in the spectral domain. The present study examined event-related potential (ERP) measures of auditory sensory temporal and spectral processing, and their interaction, in typical children and those with LI (7–17 years; n=25 per group). The stimuli were 3 CV syllables and 3 consonant-to-vowel transitions (spectral sweeps) isolated from the syllables. Each of these 6 stimuli appeared in 3 durations (transitions: 20, 50, and 80 ms; syllables: 120, 150, and 180 ms). Behaviorally, the group with LIs showed inferior syllable discrimination both with long and short stimuli. In ERPs, trends were observed in the group with LI for diminished long-latency negativities (the N2-N4 peaks) and a developmentally transient enhancement of the P2 peak. Some, but not all, ERP indices of spectral processing also showed trends to be diminished in the group with LI specifically in responses to syllables. Importantly, measures of the transition N2-N4 peaks correlated with expressive language abilities in the LI children. None of the group differences depended on stimulus duration. Therefore, sound brevity did not account for the diminished spectral resolution in these LI children. Rather, the results suggest a deficit in acoustic feature integration at higher levels of auditory sensory processing. The observed maturational trajectory suggests a non-linear developmental deviance rather than simple delay.
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影响因子：
4.7
作者：
Ceponiene, R.;Torki, M.;Townsend, J.
通讯作者：
Townsend, J.
DOI：
10.1016/s0926-6410(01)00093-3
发表时间：
2002-02-01
期刊：
COGNITIVE BRAIN RESEARCH
影响因子：
--
作者：
Ceponiene, R;Kushnerenko, E;Näätänen, R
通讯作者：
Näätänen, R
影响因子：
4.7
作者：
Conley, EM;Michalewski, HJ;Starr, A
通讯作者：
Starr, A
影响因子：
4.7
作者：
Ceponiene, R;Rinne, T;Näätänen, R
通讯作者：
Näätänen, R
影响因子：
3.7
作者：
Ceponiene, R;Alku, P;Townsend, J
通讯作者：
Townsend, J