What is the definition of Twitch Response?

Twitch Response - A sudden contraction of fibers within a taut band when strummed (manually), needled, or compressed with a vibration massage device. The contractions may be observed visually, recorded electromyographically (EMG), or visualized with diagnostic ultrasound (1).

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Related Terms

  • myofascial trigger point
  • taut band
  • muscle pain
  • electromyography
  • diagnostic ultrasound


  • local twitch response
  • LTR

Related Courses

  • Muscle Fiber Dysfunction and Trigger Points
  • Trigger Point Assessment (and Palpation)