Intracellular recordings were made from neurons of the trigeminal sensory ganglia of young adult sea lampreys. Receptive fields were mapped, and four classes of sensory cells were identified. Touch cells gave rapidly adapting responses to indentation of the skin. Pressure cells gave slowly adapting responses to indentation of the skin. Pit organ cells gave slowly adapting responses to mechanical stimulation of single lateral line pit organs. Nociceptive cells gave slowly adapting responses to destructive stimuli, such as puncture or burning of the skin. The axons of nociceptive cells had longer refractory periods and slower conduction velocities than did the axons of the other types of cell, indicating that nociceptive cells had smaller diameter axons.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
Applegate, V.C.: Natural history of the sea lamprey (Petromyzon marinus) in Michigan. Spec, scient. Rep. U.S. Fish Wildl. Serv.55, 1–237 (1950)
Ariens Kappers, C.V., Huber, G.C., Crosby, E.C.: The comparative anatomy of the nervous system of vertebrates, Vol. 1. New York: MacMillan 1936
Johnston, J.B.: The brain of petromyzon. J. comp. Neurol.12, 2–86 (1902)
Kalmijn, A.J.: The detection of electric fields from inanimate and animate sources other than electric organs. In: Handb. sens. physiol., Vol. 3: Electroreceptors and other specialized receptors in lower vertebrates (ed. A. Fessard), pp. 147–200. Berlin-Heidelberg-New York: Springer 1975
Lindström, T.: On the cranial nerves of the cyclostomes with special reference toN. trigeminus. Acta Zool.30, 315–458 (1949)
Marinelli, W., Strenger, A.: Vergleichende Anatomie und Morphologie der Wirbeltiere. Teil 1:Lampetra fluviatilis. Wien: Deuticke 1954
Martin, A.R., Wickelgren, W.O.: Sensory cells in the spinal cord of the sea lamprey. J. Physiol.212, 65–83 (1971)
Martin, A.R., Wickelgren, W.O., Beranek, R.: Effects of iontophoretically applied drugs on spinal interneurones of the lamprey. J. Physiol.207, 653–665 (1970)
Rovainen, C.M.: Physiological and anatomical studies on large neurons of central nervous system of the sea lamprey (Petromyzon marinus). I. Müller and Mauthner cells. J. Neurophysiol.30, 1000–1023 (1967a)
Rovainen, C.M.: Physiological and anatomical studies on large neurons of central nervous system of the sea lamprey (Petromyzon marinus). II. Dorsal cells and giant interneurons. J. Neurophysiol.30, 1024–1042 (1967b)
Rovainen, C.M.: Synaptic interactions of identified nerve cells in the spinal cord of the sea lamprey. J. comp. Neurol.154, 189–206 (1974a)
Rovainen, C.M.: Synaptic interactions of reticulospinal neurons and nerve cells in the spinal cord of the sea lamprey. J. comp. Neurol.154, 207–223 (1974b)
Wickelgren, W.O.: Physiological and anatomical characteristics of reticulospinal neurones in lamprey. J. Physiol.270, 89–114 (1977a)
Wickelgren, W.O.: Post-tetanic potentiation, habituation and facilitation of synaptic potentials in reticulospinal neurones of lamprey. J. Physiol.270, 115–131 (1977b)
This work was supported by NIH grants 09661 and 09660. Adult sea lampreys were kindly provided by Mr. Patrick Manion of the U.S. Bureau of Sport Fisheries and Wildlife.
About this article
Cite this article
Matthews, G., Wickelgren, W.O. Trigeminal sensory neurons of the sea lamprey. J. Comp. Physiol. 123, 329–333 (1978). https://doi.org/10.1007/BF00656966
- Receptive Field
- Conduction Velocity
- Lateral Line
- Refractory Period
- Sensory Cell