Trigeminal sensorimotor mechanisms and eating in the rat

H. Philip Zeigler, Kazue Semba, M. David Egger, Mark F. Jacquin

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Photographic, electrophysiological and neurobehavioral analyses were used to examine the contribution of trigeminal inputs to the behavioral organization of eating in the rat. During eating, jaw opening was always preceded by a period of perioral contact with the food source. Mechanical or electrical stimulation of oral and perioral areas in anesthetized animals elicited compound action potentials in the mylohyoid nerve (jaw-opener innervation) at short latencies and low stimulus intensities. Trigeminal orosensory deafferentation (sparing jaw muscle afferents and efferents) abolished or significantly reduced mouth opening during eating. We conclude that trigeminal orosensory inputs provide an essential link in the stimulus-response chain mediating eating in the rat.

Original languageEnglish
Pages (from-to)149-154
Number of pages6
JournalBrain Research
Issue number1
StatePublished - Aug 6 1984
Externally publishedYes


  • deafferentation
  • hunger
  • jaw opening reflex
  • rat
  • trigeminal nerve


Dive into the research topics of 'Trigeminal sensorimotor mechanisms and eating in the rat'. Together they form a unique fingerprint.

Cite this