Development of the N1-P2 auditory evoked response to amplitude rise time and rate of formant transition of speech sounds.
Development of the N1-P2 auditory evoked response to amplitude rise time and rate of formant transition of speech sounds.
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DOI：
10.1016/j.neulet.2013.03.041
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发表时间：
2013-06-07
影响因子：
2.5
通讯作者：
Shahin AJ
中科院分区：
文献类型：
--
作者：
Carpenter AL;Shahin AJ
我们通过检测4-6岁儿童和成人的N1-P2听觉诱发电位(AEP)对辅音-元音(CV)对的幅度上升时间(ART)和共振峰转换率(RFT)的变化的形态，来研究声学提示加权策略的发展。在AEP课程中，个人被动地收听简历/ba/、/wa/和a/ba/，并叠加一个上升较慢的/wa/信封(/ba/wa)。在行为测试中，受试者听同样的刺激并判断他们听到的是/ba/还是/wa/。我们假设，权重策略的发展变化应该反映在N1-P2AEP的形态变化上。在6岁儿童和成人中，顶端的N1-P2波幅反映了RFT的变化，但不反映ART的变化。相反，在4-5岁的儿童中，N1-P2顶点对ART或RFT的变化没有显示出特异性。在所有组中，C4通道(右半球)的N1-P2波幅反映了ART的变化，但不反映RFT的变化。在行为上，6岁儿童和成人在语音判断中主要使用RFT线索(分类为/ba/wa)，而4-5岁儿童在语音判断中使用这两种线索的比例相同。我们的发现表明，ART和RFT都在听觉皮质中编码，但4-5岁后N1-P2向顶端移动表明转向成人样的加权策略，从而在更大程度上利用RFT。
We investigated the development of weighting strategies for acoustic cues by examining the morphology of the N1–P2 auditory evoked potential (AEP) to changes in amplitude rise time (ART) and rate of formant transition (RFT) of consonant–vowel (CV) pairsin4–6-year olds and adults. In the AEP session, individuals listened passively to the CVs /ba/, /wa/, and a /ba/ with a superimposed slower-rising /wa/ envelope (/ba/wa). In the behavioral session, individuals listened to the same stimuli and judged whether they heard a /ba/ or /wa/. We hypothesized that a developmental shift in weighting strategies should be reflected in a change in the morphology of the N1–P2 AEP. In 6-year olds and adults, the N1–P2 amplitude at the vertex reflected a change in RFT but not in ART. In contrast, in the 4–5-year olds, the vertex N1–P2 did not show specificity to changes in ART or RFT. In all groups, the N1–P2 amplitude at channel C4 (right hemisphere) reflected a change in ART but not in RFT. Behaviorally, 6-year olds and adults predominately utilized RFT cues (classified /ba/wa as /ba/) during phonetic judgments, as opposed to 4–5-year olds which utilized both cues equally. Our findings suggest that both ART and RFT are encoded in the auditory cortex, but an N1–P2 shift toward the vertex following age 4–5 indicates a shift toward an adult-like weighting strategy, such that, to utilize RFT to a greater extent.
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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：
Tremblay, K;Kraus, N;Otis, B
通讯作者：
Otis, B
影响因子：
2.8
作者：
Aiken, Steven J.;Picton, Terence W.
通讯作者：
Picton, Terence W.
影响因子：
2.4
作者：
Martin, BA;Boothroyd, A
通讯作者：
Boothroyd, A
DOI：
10.1080/14640749108400989
发表时间：
1991-08-01
期刊：
QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY SECTION A-HUMAN EXPERIMENTAL PSYCHOLOGY
影响因子：
--
作者：
WALSH, MA;DIEHL, RL
通讯作者：
DIEHL, RL