title: [The application of the same frequency tone masking test in forensic identification].
abstract: OBJECTIVE
  To investigate the relationship between minimum contralateral masking level (MCML) and pure tone threshold of the masking ears by the same frequency tone masking test.
  
  
  METHODS
  The pure tone thresholds of 30 subjects (60 ears) were measured by pure tone audiometry and MCML was obtained by means of the same frequency tone masking test.
  
  
  RESULTS
  When the stimulus was at the threshold of masked ears, the differences between MCML and pure tone threshold of masking ears were among 0-30 dBHL. 82.4 percent of results showed the differences not higher than 10 dBHL, 97.1 percent of results showed the differences not higher than 15 dBHL. When the stimulus was at 10 dBHL above the threshold of masked ears, the differences between MCML and pure tone threshold of masking ears were among 0-35 dBHL. 90.5 percent of results showed the differences not higher than 25 dBHL, 98.1 percent of results showed the differences not higher than 30 dBHL.
  
  
  CONCLUSIONS
  The real thresholds can be deduced correctly by the same frequency tone masking test.
authors.affiliation: Department of Clinical Forensic Medicine, Faculty of Forensic Medicine, China Medical University, Shenyang 110001, China. liujihui585@hotmail.com
authors.forename: Ji-hui
authors.initials: JH
authors.lastname: Liu
authors.forename: Jing-tao
authors.initials: JT
authors.lastname: Xu
authors.forename: Yu-fei
authors.initials: YF
authors.lastname: Li
mesh_terms: D000161:Acoustic Stimulation / Q000379:methods; D000328:Adult; D001301:Audiometry, Pure-Tone / Q000379:methods*; D001307:Auditory Perception / Q000502:physiology; D001309:Auditory Threshold; D005260:Female; D005554:Forensic Medicine / Q000379:methods*; D006320:Hearing Tests / Q000379:methods; D006801:Humans; D008297:Male; D010470:Perceptual Masking