Functional hemispheric specialization in processing phonemic and prosodic auditory changes in neonates.
Functional hemispheric specialization in processing phonemic and prosodic auditory changes in neonates.
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DOI：
10.3389/fpsyg.2011.00202
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发表时间：
2011
影响因子：
3.8
通讯作者：
Minagawa-Kawai Y
中科院分区：
文献类型：
--
作者：
Arimitsu T;Uchida-Ota M;Yagihashi T;Kojima S;Watanabe S;Hokuto I;Ikeda K;Takahashi T;Minagawa-Kawai Y
本研究通过检测新生儿处理语音的节段性和超段性特征的功能偏侧化，来研究早期语言知觉的大脑基础。为此，使用近红外光谱(NIRS)测量了足月新生儿对音素和韵律对比的听觉诱发反应在其颞区以及部分额区和顶区。这里使用的刺激是音位对比/Itta/和/Itte/以及陈述和疑问形式的韵律对比/Itta/和/Itta？/。结果显示，在颞区以及部分顶叶和额叶区域，血流动力学对音素和韵律的变化都有明显的反应。特别是，韵律变化在右侧颞区显著高于左侧，而Hb对元音变化的反应同样在双侧颞区被激发。然而，Hb对元音对比的反应在顶区(在边缘上回周围)是不对称的，左侧激活较强。这些结果表明，右脑在韵律处理方面具有特殊的功能，这在新生儿中已经存在。讨论了音素加工过程中的顶叶活动与言语-听觉短期记忆的关系。在此基础上，结合前人对大龄婴儿的研究，总结了从出生到2岁时元音和韵律功能偏侧化的发展过程。
This study focuses on the early cerebral base of speech perception by examining functional lateralization in neonates for processing segmental and suprasegmental features of speech. For this purpose, auditory evoked responses of full-term neonates to phonemic and prosodic contrasts were measured in their temporal area and part of the frontal and parietal areas using near-infrared spectroscopy (NIRS). Stimuli used here were phonemic contrast /itta/ and /itte/ and prosodic contrast of declarative and interrogative forms /itta/ and /itta?/. The results showed clear hemodynamic responses to both phonemic and prosodic changes in the temporal areas and part of the parietal and frontal regions. In particular, significantly higher hemoglobin (Hb) changes were observed for the prosodic change in the right temporal area than for that in the left one, whereas Hb responses to the vowel change were similarly elicited in bilateral temporal areas. However, Hb responses to the vowel contrast were asymmetrical in the parietal area (around supra marginal gyrus), with stronger activation in the left. These results suggest a specialized function of the right hemisphere in prosody processing, which is already present in neonates. The parietal activities during phonemic processing were discussed in relation to verbal-auditory short-term memory. On the basis of this study and previous studies on older infants, the developmental process of functional lateralization from birth to 2 years of age for vowel and prosody was summarized.
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影响因子：
3.4
作者：
Mattock, Karen;Molnar, Monika;Burnham, Denis
通讯作者：
Burnham, Denis
DOI：
10.1111/j.2517-6161.1995.tb02031.x
发表时间：
1995-01-01
影响因子：
5.8
作者：
BENJAMINI, Y;HOCHBERG, Y
通讯作者：
HOCHBERG, Y
影响因子：
3.7
作者：
Jamison, Helen L.;Watkins, Kate E.;Matthews, Paul M.
通讯作者：
Matthews, Paul M.
影响因子：
5.7
作者：
Dehaene-Lambertz, G;Pallier, C;Dehaene, S
通讯作者：
Dehaene, S
影响因子：
2.5
作者：
BERTONCINI, J;MORAIS, J;MEHLER, J
通讯作者：
MEHLER, J