Neck electrical impedance for measurement of swallowing

Yoshitake Yamamoto, Takao Nakamura, Yasuhiko Seki, Kinya Utsuyama, Ken Akashi, Kazuaki Jikuya

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Recently, videofluorography has been used for evaluation of swallowing function in the rehabilitation field. But it is not easy to evaluate swallowing disorders simply. In addition, there are problems of exposure for daily use. We have proposed a measurement method of swallowing using bioelectrical impedance (impedance pharyngography, IPG) which has advantages of easy handling and noninvasive measurement. Appropriate electrode position have been determined. The waveforms of IPG can be obtained with some extent reproducibility. The change of neck electrical impedance in the pharyngeal phase is mainly caused by the changes of equivalent cross sectional area near the epiglottis. The possibilities of applications for clinical diagnosis have been shown.

Original languageEnglish
Pages (from-to)35-44
Number of pages10
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Issue number4
Publication statusPublished - Mar 2000


  • Bioelectrical impedance
  • Noninvasive measurement
  • Rehabilitation
  • Swallowing disorder

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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