Modes of Initiation and Propagation of Spikes in the Branching Axons of Molluscan Central Neurons

@article{Tauc1963ModesOI,
  title={Modes of Initiation and Propagation of Spikes in the Branching Axons of Molluscan Central Neurons},
  author={L. Tauc and G. M. Hughes},
  journal={The Journal of General Physiology},
  year={1963},
  volume={46},
  pages={533 - 549}
}
A study has been made of Aplysia nerve cells, mainly in the pleural ganglia, in which the main axon divides into at least two branches in the neighbourhood of the soma. Conduction between these branches was investigated by intracellular recordings from the soma following antidromic stimulation via the nerves containing the axonal branches. It has been shown that transmission between separate branches need not involve discharge of the soma but only of the axonal region between the soma and the… Expand
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References

SHOWING 1-10 OF 31 REFERENCES
Site of Origin and Propagation of Spike in the Giant Neuron of Aplysia
  • L. Tauc
  • Biology, Medicine
  • The Journal of general physiology
  • 1962
TLDR
Evidence was obtained that under normal conditions of excitability, the spike originates at some distance from the soma in an axonal region with a higher excitability surpassing that of the surrounding membranes. Expand
The Path of the Giant Cell Axons in Aplysia depilans
TLDR
Experiments have provided evidence for the branching of this axon and excluded certain possibilities concerning the function of the giant cell in the abdominal ganglion of Aplysia. Expand
Identification of Active Membrane Areas in the Giant Neuron of Aplysia
  • L. Tauc
  • Biology, Medicine
  • The Journal of general physiology
  • 1962
TLDR
Evidence was obtained that for all modes of stimulation the spike originates in the axon at some distance from the cell body, and that the response of these three parts of the neuron is recorded in the soma as the big or S spike. Expand
Aspects of the organization of central nervous pathways in Aplysia depilans.
TLDR
A great variety has been shown in the extent to which afferent stimulation may affect the whole or part of the central nervous system and the great multiplicity in the pathways whereby this is achieved. Expand
Diverse forms of activity in the somata of spontaneous and integrating ganglion cells
TLDR
These studies with extracellular macro-electrodes have shown that the lobster cardiac ganglion, consisting of nine cells of complex form, is capable of initiating at regular intervals complex bursts consisting of several to many impulses in each cell, and that there is a distinct pattern in the whole complex as well as in the bursts of impulse in each unit. Expand
Neuronal Pathways and Synaptic Connexions in the Abdominal Cord of the Crayfish
TLDR
For the majority of the interneurones which innervate more than two abdominal segments it has been proved that they synapse with primary sensory fibres in each of the ganglia that these enter, and depending on the segment stimulated with respect to the leading-off position, both ascending and descending impulses are obtained. Expand
Potential fields initiated during monosynaptic activation of frog motoneurones
TLDR
The technique of focal recording from within the spinal cord, and comparison of the temporal relations of simplified responses, have permitted a test of the hypothesis suggested by anatomical findings about differences in the patterns of discharge evoked in frog spinal motoneurones. Expand
Response of single motoneurons to direct stimulation in toad's spinal cord.
TLDR
The results reported here were obtained with a method of direct stimulation of single spinal motoneurons of Japanese toads using the same microelectrode with certain compensation circuits for both stimulation and recording. Expand
Monosynaptic activation of different portions of the motor neuron membrane.
TLDR
It is concluded that dendritic excitation following a dorsal root volley influences the level of polarization of the cell body by electrotonic propagation of the resulting EPSP. Expand
Potentials recorded from the spinal cord with microelectrodes
TLDR
The present article is the first of a series of papers designed to describe results obtained by recording the electrical activity of elements in the lumbar region of the spinal cord of cats by means of intracellular micropipettes by identifying somatic or axonal origin of the recorded potentials. Expand
...
1
2
3
4
...