EARLY MATURATION OF FREQUENCY-FOLLOWING RESPONSES TO VOICE PITCH IN INFANTS WITH NORMAL HEARING
EARLY MATURATION OF FREQUENCY-FOLLOWING RESPONSES TO VOICE PITCH IN INFANTS WITH NORMAL HEARING
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DOI：
10.2466/10.22.24.pms.111.6.765-784
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发表时间：
2010-12-01
影响因子：
1.6
通讯作者：
Chung, Hsiung-Kwang
中科院分区：
文献类型：
--
作者：
Jeng, Fuh-Cherng;Schnabel, Elizabeth A.;Chung, Hsiung-Kwang
人类脑干的音高处理机制的神经可塑性，反映了头皮记录的频率跟随反应（FFR）对声音音高，已经报道了正常听力的成年人。在生命的第一年，这种反应的特征和成熟度尚不清楚。本研究的目的是研究正常听力婴儿的FFR对音高的特征，并在相同的刺激和记录参数下与成人进行直接比较。9名婴儿和9名成人被招募。一个模仿英语元音/i/的汉语单音节被用来引出FER的音高。结果表明，与成人相比，婴儿的音高强度略大，但频率误差、坡度误差和跟踪精度相当。在1至3岁的婴儿中也观察到fer的早熟。
Neural plasticity of pitch processing mechanisms at the human brainstem, as reflected by the scalp-recorded frequency-following response (FFR) to voice pitch, has been reported for normal-hearing adults. Characteristics and maturation of such a response during the first year of life have remained unclear. The purpose of this study was to examine the characteristics of FFR to voice pitch in normal-hearing infants and to make a direct comparison with adults using the same stimulus and recording parameters. 9 infants and 9 adults were recruited. A Chinese monosyllable that mimics the English vowel /i/ with a rising pitch was used to elicit the FER to voice pitch. The results demonstrated that infant FERs showed slightly larger Pitch Strength but comparable Frequency Error, Slope Error, and Tracking Accuracy to those obtained from adults. Early maturation of FERs was also observed in the infants starting from 1 to 3 mo. of age.