論文

査読有り 国際誌
2018年9月1日

Effect of peripherally and cortically evoked swallows on jaw reflex responses in anesthetized rabbits.

Brain research
  • Taku Suzuki
  • ,
  • Midori Yoshihara
  • ,
  • Shogo Sakai
  • ,
  • Kojun Tsuji
  • ,
  • Kouta Nagoya
  • ,
  • Jin Magara
  • ,
  • Takanori Tsujimura
  • ,
  • Makoto Inoue

1694
開始ページ
19
終了ページ
28
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.brainres.2018.05.002

This study aimed to investigate whether the jaw-opening (JOR) and jaw-closing reflexes (JCR) are modulated during not only peripherally, but also centrally, evoked swallowing. Experiments were carried out on 24 adult male Japanese white rabbits. JORs were evoked by trigeminal stimulation at 1 Hz for 30 s. In the middle 10 s, either the superior laryngeal nerve (SLN) or cortical swallowing area (Cx) was simultaneously stimulated to evoke swallowing. The peak-to-peak JOR amplitude was reduced during the middle and late 10-s periods (i.e., during and after SLN or Cx stimulation), and the reduction was dependent on the current intensity of SLN/Cx stimulation: greater SLN/Cx stimulus current resulted in greater JOR inhibition. The reduction rate was significantly greater during Cx stimulation than during SLN stimulation. The amplitude returned to baseline 2 min after 10-s SLN/Cx stimulation. The effect of co-stimulation of SLN and Cx was significantly greater than that of SLN stimulation alone. There were no significant differences in any parameters of the JCR between conditions. These results clearly showed that JOR responses were significantly suppressed, not only during peripherally evoked swallowing but also during centrally evoked swallowing, and that the inhibitory effect is likely to be larger during centrally compared with peripherally evoked swallowing. The functional implications of these results are discussed.

リンク情報
DOI
https://doi.org/10.1016/j.brainres.2018.05.002
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/29730058
ID情報
  • DOI : 10.1016/j.brainres.2018.05.002
  • ISSN : 0006-8993
  • PubMed ID : 29730058

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