摘要
本文对正常新生豚鼠听性脑干反应（ＡＢＲ）时域和频域特性进行了研究。结果表明：正常新生豚鼠ＡＢＲ的反应阈为２２±４ｄＢｎＨＬ（０ｄＢｎＨＬ＝１７ｄＢＳＰＬ），约比正常成年豚鼠ＡＢＲ的反应阈高１０ｄＢｎＨＬ；正常新生豚鼠波Ⅲ潜伏期、Ⅰ─Ⅲ波间期均明显长于正常成年豚鼠（Ｐ＜０．０１），而波Ⅰ潜伏期无显著性差异（Ｐ＞０．０５）；潜伏期─强度函数曲线的斜率大于正常成年豚鼠；功率谱表明，与正常成年豚鼠相比较，０～２００Ｈｚ、５１０～９００Ｈｚ频段谱能量有显著性差异（Ｐ＜０．０５、Ｐ＜０．０１）。
An investigation was presented on the time and frequency characteristics of auditory brainstem responses(ABR)in normal newborn guinea pigs.As compared with normal adult guinea pigs,the properties of the newborn were as follows.The ABR threshold had increased about 10 dBnHL, its value being equal to 22±4 dBnHL. Both waveⅢ latencies and Ⅰ─Ⅲ interpeak latencies were found to delay significantly(P<0.01),but wave Ⅰlatencies were not(P<0.05),and a slope when ploted in latency-intensity scales was large.The power spectrum indicated a significant increase (P<0. 05) in energy of the components in the 0-200Hz range and a more significant decrease(P<0.01)in the 510-900Hz range.
出处
《听力学及言语疾病杂志》
CAS
CSCD
1994年第1期18-21,共4页
Journal of Audiology and Speech Pathology
关键词
听性脑干反应
时域和频域
新生豚鼠
Auditory brainstem response Time and frequency characteristic Newborn guinea pigs
