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Experimental Brain Research

, Volume 13, Issue 5, pp 461–488 | Cite as

Single unit recordings from the geniculate ganglion of the facial nerve of the cat

  • James C. Boudreau
  • Bruce E. Bradley
  • Peggy R. Bierer
  • Stefan Kruger
  • Chiyeko Tsuchitani
Article

Summary

  1. 1.

    Within the cat geniculate ganglion three distinct neural populations were definable on the basis of single unit recordings. These three neural populations were designated “ear units”, “regular discharge units” and “tongue units.” Units from these three populations tended to be located in different regions of the ganglion and were influenced by different types of stimulation to different parts of the body.

     
  2. 2.

    Ear units seemed to constitute a uniform functional population, with the major differences between units being the external locus of projection. Ear units typically had no spontaneous activity. They were discharged by dynamic displacements of hairs on the skin of the inner surface of the ear.

     
  3. 3.

    Regular discharge units were classified into three types on the basis of their spontaneous activity patterns. Discharge of most of the units could be affected by static dislocations of tissues of the soft palate and pharynx. Discharge patterns, evoked and spontaneous, tended to be extremely regular.

     
  4. 4.

    Tongue units seemed to constitute an extremely diverse population. Wide variability was shown on every measure taken of tongue unit activity. Spontaneous activity patterns varied markedly from unit to unit, with bursting discharge common. Most units could be discharged by electrical stimulation of papillae of the tongue, although the number of stimulatable papillae varied from unit to unit as did latency measures. Some tongue units were discharged by mechanical stimulation of the tongue, most by chemical stimulation of the tongue (with salt, acid, quinine and common cat foods), and some by both.

     

Key words

Geniculate ganglion Facial nerve Cat sensory systems Taste Tongue chemoreceptors Fungiform papillae Cat tongue 

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References

  1. Amabilino, R.: Sui rapporti del ganglio genioulato. Pisani 19, 123–140 (1898).Google Scholar
  2. Becker, J.: Über Zungenpapillen. Jena. Z. Naturwiss. 36, 537–618 (1908).Google Scholar
  3. B'ekésy, G. v.: Sweetness produced electrically on the tongue and its relation to taste theories. J. appl. Physiol. 19, 1105–1113 (1964).Google Scholar
  4. Boudreau, J.C., Bierer, P., Kaufman, J.: A gold plated, platinum tipped, stainless steel microelectrode. Eleetroenceph. clin. Neurophysiol. 25, 286–287 (1968).Google Scholar
  5. Brown, A.G., Iggo, A., Miller, S.: Myelinated afferent fibers from the skin of the rabbit ear. Exp. Neurol. 18, 338–349 (1967).Google Scholar
  6. Bruesch, S.R.: The distribution of myelinated afferent fibers in the branches of the cat's facial nerve. J. comp. Neurol. 81, 169–191 (1944).Google Scholar
  7. Burgess, P.R., Petit, D., Warren, R.M.: Receptor types in cat hairy skin supplied by myelinated fibers. J. Neurophysiol. 31, 833–848 (1968).Google Scholar
  8. Buskirk, C.V.: The seventh nerve complex. J. comp. Neurol. 82, 303–326 (1945).Google Scholar
  9. Cohen, M.J., Hagiwara, S., Zotterman, Y.: The response spectrum of taste fibers in the cat: A single fiber analysis. Acta physiol. scand. 33, 316–332 (1955).Google Scholar
  10. Davis, L.E.: The deep sensibility of the face. Arch. Neurol. Psychiat. (Chic.) 9, 283–305 (1923).Google Scholar
  11. Foley, J.O.: The sensory and motor axons of the chorda tympani. Soc. Exp. Biol. Med. Proc. 60, 262–267 (1945).Google Scholar
  12. —, DuBois, F.S.: An experimental study of the facial nerve. J. comp. Neurol. 79, 79–105 (1943).Google Scholar
  13. —, Pepper, H.R., Kessler, W.H.: The ratio of nerve fibers to nerve cells in the geniculate ganglion. J. comp. Neurol. 85, 141–148 (1946).Google Scholar
  14. Gaetani, L.d.: Del nervo intermediario di Wrisberg e della corda del timpano. L. Nevraxe 8, 67–123 (1906).Google Scholar
  15. Gmelin: Zur Morphologie der Papilla Vallata und foliata. Arch. mikr. Anat. 40, 1–28 (1892).Google Scholar
  16. Hunt, J.R.: Geniculate neuralgia (neuralgia of the nervus facialis). Arch. Neurol. Psychiat. (Chic.) 37, 253–285 (1937).Google Scholar
  17. —: On herpetic inflammations of the geniculate gangion. A new syndrome and its complications. J. nerv. ment. Dis. 34, 73–96 (1907).Google Scholar
  18. —: The sensory field of the facial nerve: A further contribution to the symptomatology of the geniculate ganglion. Brain 38, 418–446 (1915).Google Scholar
  19. —: The symptom-complex of the acute posterior poliomyelitis of the geniculate, auditory, glossopharyngeal and pneumogastric ganglia. Arch. intern. Med. 5, 631–675 (1910).Google Scholar
  20. Iggo, A.: Electrophysiological and histological studies of cutaneous mechano-receptors. In: The Skin Senses. Ed. by D. Kenshalo. Springfield, Ill.: C.C. Thomas 1968.Google Scholar
  21. —, Leek, B.F.: The afferent innervation of the tongue of the sheep. In: Olfaction and Taste II. Ed. by T. Hayashi. New York: Pergamon Press 1967.Google Scholar
  22. Iriuchijima, J., Zotterman, Y.: Conduction rates of afferent fibres to the anterior tongue of the dog. Acta physiol. scand. 51, 283–289 (1961).Google Scholar
  23. Kitchell, R.L.: Comparative anatomical and physiological studies of gustatory mechanisms. In: Olfaction and Taste I. Ed. by Y. Zotterman. New York: Pergamon Press 1963.Google Scholar
  24. Kuré, K., Sano, T.: Faserarten im N. facialis und die funktionelle Bedeutung des Ganglion geniculi. Z. Zellforsch. 23, 495–509 (1935).Google Scholar
  25. Larsell, O., Fenton, R.A.: The embryology and neurohistology of sphenopalatine ganglion connections; a contribution to the study of otalgia. Laryngoscope 38, 371–389 (1928).Google Scholar
  26. Lenhossék, M.: Beiträge zur Histologie des Nervensystems und der Sinnesorgane. Wiesbaden, 1894 S. 145–160.Google Scholar
  27. Nagaki, J., Yamashita, S., Sato, M.: Neural response of cat to taste stimuli of varying temperatures. Jap. J. Physiol. 14, 67–89 (1964).Google Scholar
  28. Pfaffmann, C.: Gustatory afferent impulses. J. cell. comp. Physiol. 17, 243–258 (1941).Google Scholar
  29. —: Gustatory nerve impulses in rat, cat and rabbit. J. Neurophysiol. 18, 429–440 (1955).Google Scholar
  30. Ramon y Cajal, S. (1909): “Histologie du Système Nerveux de l'Homme et des Vertébrés.” Institute Ramon y Cajal, Madrid (1952 reprint).Google Scholar
  31. Rapuzzi, G., Casella, C.: Innervation of the fungiform papillae in the frog tongue. J. Neurophysiol. 28, 154–165 (1965).Google Scholar
  32. Rhinehart, D.A.: The nervus facialis of the albino mouse. J. comp. Neurol. 30, 81–125 (1918).Google Scholar
  33. Rodieck, R.W., Kiang, N.Y.S., Gerstein, G.L.: Some quantitative methods for the study of spontaneous activity in single neurons. Biophys. J. 2, 351–368 (1968).Google Scholar
  34. Sato, M., Yamashita, S., Ogawa, H.: Afferent specificity in taste. In: Olfaction and Taste III. Ed. by C. Pfaffmann. Rockefeller University, 1969.Google Scholar
  35. Spalla, L.J., Boudreau, J.C.: A solid state differential amplitude discriminator for single unit recording. Electroenceph. clin. Neurophysiol. 23, 477–480 (1967).Google Scholar
  36. Weddell, G., Pallie, W.: Studies on the innervation of skin: II. The number, size and distribution of hairs, hair follicles and orifices from which the hairs emerge in the rabbit ear. J. Anat. (Lond.) 89, 175–188 (1955).Google Scholar
  37. —, Palmer, E.: Studies on the innervation of skin: I. The origin, course and number of sensory nerves supplying the rabbit ear. J. Anat. (Lond.) 89, 164–174 (1955a).Google Scholar
  38. —, Taylor, A., Williams, C.M.: Studies on the innervation of skin: III. The patterned arrangement of the spinal sensory nerves to the rabbit ear. J. Anat. (Lond). 89, 317–342 (1955b).Google Scholar
  39. Weigner, K.: Über den Verlauf des Nervus intermedius. Anat. Hefte 29, 97–163 (1905).Google Scholar
  40. Zotterman, Y.: Action potentials in the glossopharyngeal nerve and in the chorda tympani. Skand. Arch. Physiol. 72, 73–77 (1935).Google Scholar

Copyright information

© Springer-Verlag 1971

Authors and Affiliations

  • James C. Boudreau
    • 1
  • Bruce E. Bradley
    • 1
  • Peggy R. Bierer
    • 1
  • Stefan Kruger
    • 1
  • Chiyeko Tsuchitani
    • 1
  1. 1.Leech Farm Veterans Administration HospitalPittsburghUSA

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