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《Journal of Clinical Otorhinolaryngology Head and Neck Surgery》 2011-01
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The influence of in awake and sleeping to the thresholds of ASSR

YAN Huiqin1 WANG Haitao2 HUANG Lifen2 ZHOU Feng2(1Post-graduate 2008,Guangzhou Medical College,Guangzhou,510620,China;2Department of Otolaryngology-Head and Neck Surgery,the 12th Hospital of Guangzhou,Guangzhou Medical College)  
Objective:To explore the difference of the threshold of auditory steady-state evoked responses (ASSR) in awake and sleeping.Method:Fifteen adults (30 ears)with normal hearing were selected to ASSR test. ASSR parameters: carrier frequency (CM)are 0.5,1.0,2.0,3.0,4.0,6.0 kHz, modulation frequency(FM) are 46、81 Hz. The test was performed in two different status (in awake and sleeping).Result:In awake ,the thresholds of ASSR with FM of 46 Hz are significantly lower than 81 Hz(P0.01);In sleeping,the thresholds of ASSR with FM of 81 Hz are lower than 46 Hz above 2 kHz CM(P0.05),which thresholds were close to pure tone.Conclusion:To select low modulate(46 Hz) frequency in awake, and use high modulate(81Hz)frequency in sleeping. When perform ASSR test, the test values are closer to the actual hearing threshold.
【Fund】: 广东省科技厅科技支撑计划项目(No:20061040023)
【CateGory Index】: R764
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Chinese Journal Full-text Database 2 Hits
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