Biomedical Science Letters (대한의생명과학회지)

The Korean Society for Biomedical Laboratory Sciences (대한의생명과학회)
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Utilization of Averaging Process of Blink Reflex to Improve Diagnosis of Facial Nerve Palsy

  • Yoo, Jong-Kyun (Department of Neurology, National Health Insurance Ilsan Hospital) ;
  • Cho, Jeong-Hee (Department of Neurology, National Health Insurance Ilsan Hospital) ;
  • Kim, Dea-Sik (Department of Clinical Laboratory Science, Dongnam Health College)
  • Received : 2012.11.26
  • Accepted : 2012.12.24
  • Published : 2012.12.31
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Abstract

The conventional blink reflex has limited clinical application since it displays a wide range of change in the responses. Thus, we studied the blink reflex using the averaging process which is engaged in evoked potential studies in order to measure various responses such as latency, amplitude, and duration, which have been difficult to measure due to their wide ranges of changes. Among the Bell's palsy patient group, 13 patients who had the symptoms of incomplete palsy were examined to assess the results of the blink reflex through the averaging process. The subjects were 54 people in a normal group (108 eyes) and 18 patients (36 eyes) with Bell's palsy. For the study method, the conventional blink reflex and the blink reflex using the averaging process were measured for the people in the normal group, while in the Bell's palsy group, only the blink reflex using the averaging process was analyzed. In the case of the normal group, the blink reflex using the averaging process could measure all of the latency, amplitude, and duration. It was also observed that the latency, amplitude, and duration of R1, ipsilateral R2, and contralateral R2 significantly differed on the affected side of the Bell's palsy patients, compared to the unaffected side. The blink reflex using the averaging process should be more effective than the conventional method since the former can evaluate the latency, amplitude, and duration for Bell's palsy, while the latter can only assess latency.

Keywords

References

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