Electromyography of swallowing with fine wire intramuscular electrodes in healthy human: Activation sequence of selected hyoid muscles

Haruhi Inokuchi, Marlís González-Fernández, Koichiro Matsuo, Martin B. Brodsky, Mitsumasa Yoda, Hiroshige Taniguchi, Hideto Okazaki, Takashi Hiraoka, Jeffrey B. Palmer

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Few studies have reported the activation sequence of the swallowing muscles in healthy human participants. We examined temporal characteristics of selected hyoid muscles using fine wire intramuscular electromyography (EMG). Thirteen healthy adults were studied using EMG of the anterior belly of digastric (ABD), geniohyoid (GH), sternohyoid (SH), and masseter (MA, with surface electrodes) while ingesting thin liquid, banana, tofu, and cookie (3 trials each). Onset timing was measured from rectified and integrated EMG. Data were analyzed using repeated-measures ANOVA with Bonferroni correction. When drinking thin liquid, MA, GH, and ABD were activated almost simultaneously, but SH was activated later (using GH onset as 0 s, MA -0.07 (-0.20 to 0.17) second [median (interquartile range)]; ABD 0.00 (-0.10 to 0.07) second; SH 0.17 (0.02 to 0.37) second; P<0.01). With solid foods, MA contraction preceded GH and ABD; SH was last and delayed relative to liquid swallows (GH 0 s; MA -0.17 (-0.27 to 0.07) second; ABD 0.00 (-0.03 to 0.03) second; SH 0.37 (0.23 to 0.50) second; P<0.01). The role of the MA differs between solids and liquids so the variation in its timing is expected. The synchronous contraction of GH and ABD was consistent with their role in hyolaryngeal elevation. The SH contracted later with solids, perhaps because if the longer duration of the swallow. The consistent pattern among foods supports the concept of a central pattern generator for pharyngeal swallowing.

Original languageEnglish
Pages (from-to)713-721
Number of pages9
JournalDysphagia
Volume29
Issue number6
DOIs
Publication statusPublished - 21-08-2014

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Electromyography
Deglutition
Electrodes
Muscles
Central Pattern Generators
Swallows
Soy Foods
Food
Musa
Drinking
Analysis of Variance
Healthy Volunteers

All Science Journal Classification (ASJC) codes

  • Otorhinolaryngology
  • Gastroenterology
  • Speech and Hearing

Cite this

Inokuchi, Haruhi ; González-Fernández, Marlís ; Matsuo, Koichiro ; Brodsky, Martin B. ; Yoda, Mitsumasa ; Taniguchi, Hiroshige ; Okazaki, Hideto ; Hiraoka, Takashi ; Palmer, Jeffrey B. / Electromyography of swallowing with fine wire intramuscular electrodes in healthy human : Activation sequence of selected hyoid muscles. In: Dysphagia. 2014 ; Vol. 29, No. 6. pp. 713-721.
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abstract = "Few studies have reported the activation sequence of the swallowing muscles in healthy human participants. We examined temporal characteristics of selected hyoid muscles using fine wire intramuscular electromyography (EMG). Thirteen healthy adults were studied using EMG of the anterior belly of digastric (ABD), geniohyoid (GH), sternohyoid (SH), and masseter (MA, with surface electrodes) while ingesting thin liquid, banana, tofu, and cookie (3 trials each). Onset timing was measured from rectified and integrated EMG. Data were analyzed using repeated-measures ANOVA with Bonferroni correction. When drinking thin liquid, MA, GH, and ABD were activated almost simultaneously, but SH was activated later (using GH onset as 0 s, MA -0.07 (-0.20 to 0.17) second [median (interquartile range)]; ABD 0.00 (-0.10 to 0.07) second; SH 0.17 (0.02 to 0.37) second; P<0.01). With solid foods, MA contraction preceded GH and ABD; SH was last and delayed relative to liquid swallows (GH 0 s; MA -0.17 (-0.27 to 0.07) second; ABD 0.00 (-0.03 to 0.03) second; SH 0.37 (0.23 to 0.50) second; P<0.01). The role of the MA differs between solids and liquids so the variation in its timing is expected. The synchronous contraction of GH and ABD was consistent with their role in hyolaryngeal elevation. The SH contracted later with solids, perhaps because if the longer duration of the swallow. The consistent pattern among foods supports the concept of a central pattern generator for pharyngeal swallowing.",
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Electromyography of swallowing with fine wire intramuscular electrodes in healthy human : Activation sequence of selected hyoid muscles. / Inokuchi, Haruhi; González-Fernández, Marlís; Matsuo, Koichiro; Brodsky, Martin B.; Yoda, Mitsumasa; Taniguchi, Hiroshige; Okazaki, Hideto; Hiraoka, Takashi; Palmer, Jeffrey B.

In: Dysphagia, Vol. 29, No. 6, 21.08.2014, p. 713-721.

Research output: Contribution to journalArticle

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AU - Inokuchi, Haruhi

AU - González-Fernández, Marlís

AU - Matsuo, Koichiro

AU - Brodsky, Martin B.

AU - Yoda, Mitsumasa

AU - Taniguchi, Hiroshige

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AU - Palmer, Jeffrey B.

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AB - Few studies have reported the activation sequence of the swallowing muscles in healthy human participants. We examined temporal characteristics of selected hyoid muscles using fine wire intramuscular electromyography (EMG). Thirteen healthy adults were studied using EMG of the anterior belly of digastric (ABD), geniohyoid (GH), sternohyoid (SH), and masseter (MA, with surface electrodes) while ingesting thin liquid, banana, tofu, and cookie (3 trials each). Onset timing was measured from rectified and integrated EMG. Data were analyzed using repeated-measures ANOVA with Bonferroni correction. When drinking thin liquid, MA, GH, and ABD were activated almost simultaneously, but SH was activated later (using GH onset as 0 s, MA -0.07 (-0.20 to 0.17) second [median (interquartile range)]; ABD 0.00 (-0.10 to 0.07) second; SH 0.17 (0.02 to 0.37) second; P<0.01). With solid foods, MA contraction preceded GH and ABD; SH was last and delayed relative to liquid swallows (GH 0 s; MA -0.17 (-0.27 to 0.07) second; ABD 0.00 (-0.03 to 0.03) second; SH 0.37 (0.23 to 0.50) second; P<0.01). The role of the MA differs between solids and liquids so the variation in its timing is expected. The synchronous contraction of GH and ABD was consistent with their role in hyolaryngeal elevation. The SH contracted later with solids, perhaps because if the longer duration of the swallow. The consistent pattern among foods supports the concept of a central pattern generator for pharyngeal swallowing.

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