The sites of origin of projection fibers from the cerebral cortex to the jaw region of the striatum of the rat

Sang Hak Lee, Seok Hee Chung, Jong Soo Lee, Sung Soo Kim, Hyun Dae Shin, Baek Vin Lim, Mi Hyeon Jang, Hong Kim, Ee Hwa Kim, Chang Ju Kim

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Abstract

Electrical microstimulation of the jaw region of the rat striatum (SJR) has been reported to provoke clear electromyographic activity in the anterior digastric muscle but not in the masseter muscle (Neurosci. Lett., 252 (1998) 79-82). Thus, in the present study, we examined the sites of origin of cortico-SJR fibers by the retrograde labeling. The SJR, identified by electrical microstimulation, was injected electrophoretically with cholera toxin B subunit. In the cerebral cortex ipsilateral to the injection, there existed two foci of retrograde labeling: One focus was centered on the lateral part of the sensorimotor area, while the other on the insular cortical area around the middle cerebral artery. These foci appeared to correspond to the reported two cortical areas, where two different types of rhythmical jaw movements were induced by repetitive electrical stimulation (Jap. J. Oral Biol., 32 (1990) 57-68).

Original languageEnglish (US)
Pages (from-to)9-12
Number of pages4
JournalNeuroscience Letters
Volume332
Issue number1
DOIs
StatePublished - Oct 25 2002

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Keywords

  • Basal ganglia
  • Cerebral cortex
  • Electromyography
  • Jaw movement
  • Microstimulation
  • Rat
  • Retrograde labeling
  • Striatum

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Lee, S. H., Chung, S. H., Lee, J. S., Kim, S. S., Shin, H. D., Lim, B. V., Jang, M. H., Kim, H., Kim, E. H., & Kim, C. J. (2002). The sites of origin of projection fibers from the cerebral cortex to the jaw region of the striatum of the rat. Neuroscience Letters, 332(1), 9-12. https://doi.org/10.1016/S0304-3940(02)00899-6