An electrooptical muscle contraction sensor

Med Biol Eng Comput. 2010 Jul;48(7):731-4. doi: 10.1007/s11517-010-0626-x. Epub 2010 May 21.


An electrooptical sensor for the detection of muscle contraction is described. Infrared light is injected into the muscle, the backscattering is observed, and the contraction is detected by measuring the change, that occurs during muscle contraction, between the light scattered in the direction parallel and perpendicular to the muscle cells. With respect to electromyography and to optical absorption-based sensors, our device has the advantage of lower invasiveness, of lower sensitivity to electromagnetic noise and to movement artifacts, and of being able to distinguish between isometric and isotonic contractions.

Publication types

  • Evaluation Study
  • Letter

MeSH terms

  • Adult
  • Electronics, Medical
  • Equipment Design
  • Humans
  • Infrared Rays*
  • Male
  • Muscle Contraction / physiology*
  • Scattering, Radiation