title: [The influences examination and analysis of blink reflex in normal volunteer].
abstract: OBJECTIVE
  To study the influence factors on latent values of blink reflex (BR) in normal volunteer.
  
  
  METHODS
  BRs of 60 normal volunteers were detected bilaterally with Medtronic Keypoint EMG.
  
  
  RESULTS
  The normal values of BRs latencies in our research was R1 (10.27 +/- 0.91) ms, R2 (28.79 +/- 4.08) ms and R2' (29.06 +/- 4.35) ms, respectively. There was no statistical difference between left ear and right ear, as far as the latencies of R1, R2 and R2'were concerned respectively (P > 0.05). The latency of R1 in male was more prolonged than female (P < 0.05), as well as the R2 and R2 in male prolonged significantly (P < 0.01). Furthermore, the latency of R1 has a positive relation with age (P < 0.05) in male group, while the latencies of R2 and R2 have no relation with age (P > 0.05). Latencies of BR in female have no relation with age (P > 0.05).
  
  
  CONCLUSIONS
  To some extent, age and gender have some influence on the latencies of BR. It is important to establish normal values about BR in different age or gender of people.
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Key Laboratory of Otolaryngology Head and Neck Surgery, Beijing 100730, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Li
authors.forename: Yanling
authors.initials: Y
authors.lastname: Zhao
authors.forename: Shusheng
authors.initials: S
authors.lastname: Gong
authors.forename: Jun
authors.initials: J
authors.lastname: Zheng
authors.forename: Rongkun
authors.initials: R
authors.lastname: Qu
mesh_terms: D000293:Adolescent; D000328:Adult; D001767:Blinking; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012016:Reference Values; D055815:Young Adult