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Retinopetal neurons and fibers in the lamprey

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The structure of the retinopetal system was studied in the lamprey (Lampetra fluviatilis) using the horseradish peroxydase technique of axonal transport. Anterograde axonal transport within the retinofugal fibers had first been cut off by chemical destruction of the retina or severing the optic nerve, thereby enabling observation of retinopetal fibers unmasked by labeled visual afferents. Central neurons of the retinopetal systems could thus be distinguished bilaterally in the periventricular tegmental area of the midbrain and the mesencephalic reticular zone. Retinopetal fibers were traced in the structure of the axial optic tract.

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Literature cited

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Additional information

I. M. Sechenov Institute of Evolutionary Physiology and Biochemistry, Academy of Sciences of the USSR, Leningrad. Laboratory of Sensory Psychophysiology, Paris University VI, Paris, France. Translated from Neirofiziologiya, Vol. 17, No. 6, pp. 723–727, November–December, 1985.

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Veselkin, N.P., Repérant, J. Retinopetal neurons and fibers in the lamprey. Neurophysiology 17, 513–517 (1985). https://doi.org/10.1007/BF01053384

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  • Optic Nerve
  • Axonal Transport
  • Optic Tract
  • Central Neuron
  • Reticular Zone