Summary
The conduction velocity of the unmyelinated portion of the optic nerve fibres within the cat's retina was measured by shifting a microelectrode from the blind spot outwards and stimulating antidromically in the lateral geniculate body. The mean conduction velocities were 2.8 m/s for the fast, and 1.7 m/s for the slow group of optic nerve fibres, as compared with maxima of 70 and 23 m/s respectively for the same groups in the myelinated extrabulbar portion.
References
R. Granit,Centrifugal and antidromic effects on ganglion cells of retina, J. Neurophysiol.18, 388 (1955).
P. O. Bishop, D. Jeremy undJ. W. Lance, J. Physiol.121, 415 (1953).
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Dodt, E. Geschwindigkeit der Nervenleitung innerhalb der Netzhaut. Experientia 12, 34–35 (1956). https://doi.org/10.1007/BF02156996
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DOI: https://doi.org/10.1007/BF02156996