Huang Li-hui, Kaga Kimi-taka, Han De-min, Wang Tao
Beijing Institute of Otolaryngology, Beijing Tongren Hospital, Capital University of Medical Sciences, Beijing 100005, China.
Zhonghua Yi Xue Za Zhi. 2005 Mar 23;85(11):765-8.
To compare the characteristics of vocalization and relevant perceptual characteristics between normal hearing infants and congenitally hearing impaired infants during pre-language period.
Speech spectrograms were analyzed, and the presentation time and frequency of pre-canonical babbling, canonical babbling, pointing behaviors and meaningful words were compared and statistically analyzed among 18 normal hearing infants, 11 profoundly congenitally hearing impaired infants that were divided into 2 groups: group A of deaf infants (n = 11) to be aided before 8 months of age and group B of deaf infant (n = 17) to be aided after 8 months of age.
There was no significant difference in the presentation time and frequency of pre-canonical babbling among the 3 groups. Canonical babbling, pointing behaviors and meaningful words occurred the earliest and with the highest frequency in the normal hearing group, followed by the group A of deaf infants and group B of deaf infants in succession.
Pre-canonical babbling appears in profoundly hearing impaired infants, suggesting that it is a kind of phonation activity free of hearing feedback. Better language development can be achieved when early intervention is carried out for congenitally hearing impaired infants within 8 months of age.
比较正常听力婴儿和先天性听力障碍婴儿在语言前期的发声特征及相关感知特征。
对语音频谱图进行分析，比较并统计分析18名正常听力婴儿、11名先天性重度听力障碍婴儿（分为两组：A组为8个月前接受助听的聋儿，n = 11；B组为8个月后接受助听的聋儿，n = 17）的前规范咿呀学语、规范咿呀学语、指物行为和有意义词语的出现时间及频率。
三组在前规范咿呀学语的出现时间和频率上无显著差异。规范咿呀学语、指物行为和有意义词语在正常听力组出现最早且频率最高，其次依次为A组聋儿和B组聋儿。
前规范咿呀学语出现在重度听力障碍婴儿中，提示其是一种不受听力反馈影响的发声活动。对先天性听力障碍婴儿在8个月内进行早期干预可实现更好的语言发育。
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