Journal of the Korean Academy of Clinical Electrophysiology (대한임상전기생리학회지)

The Korean Academy of Clinical Electrophysiology (대한임상전기생리학회)
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The Influence of Medium Frequency Currents According to Frequency on Sensory Threshold

중주파 전류의 주파수가 감각 역치에 미치는 영향

  • Yu, Jin-Ho (Department of Physical Therapy, Graduate School of Chosun University) ;
  • Hwang, Tae-Yeon (Department of Physical Therapy, Chunnam Techno College) ;
  • Jeong, Jin-Gyu (Department of Physical Therapy, Chunnam Techno College)
  • Received : 2009.10.30
  • Accepted : 2009.11.25
  • Published : 2009.12.30
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Abstract

Purpose : The purpose of this study was to examine the effects of different medium frequency currents on afferent fibers. Methods : Thirty healthy volunteers who had no known history of neurological disorders were equally assigned to one of three groups; 2500Hz, 4000Hz, and control and each group was applied to the left wrist in palmer cutaneous branch of radial nerve by different medium frequency currents for 15 min. We measured the changes of thresholds for tactile, two-point discrimination, and thresholds for pain. Results : The results showed that the medium frequency currents stimulation increased thresholds for tactile, two-point discrimination, and thresholds for pain. However, there is no statistically significant difference between group 2500Hz and group 4000Hz. Conclusion : This may explain thresholds for tactile, two-point discrimination, and thresholds for pain plain medium frequency currents stimulation inhibits the excitability of afferent fibers, but the effect of the frequency difference within medium frequency currents is not demonstrated.

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References

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