Electrophysiological characteristics of tectal and thalamo-cortical divisions of the visual system in lower vertebrates.

@article{Karamian1966ElectrophysiologicalCO,
  title={Electrophysiological characteristics of tectal and thalamo-cortical divisions of the visual system in lower vertebrates.},
  author={A. I. Karamian and Nikolai P. Vesselkin and Margarita G. Belekhova and T. M. Zagorul'ko},
  journal={The Journal of comparative neurology},
  year={1966},
  volume={127 4},
  pages={
          559-76
        }
}
Electrophysiological characteristics of the visual system have been investigated on an ascending phylogenetic scale in submammalian vertebrates. In cyclostomes and plagiostomes the only system of vision is retino-tectal. In lampreys spread of excitation from visual centers to descending paths of the spinal cord occurs readily, as a manifestation of diffuse, primitive brain. As a result of progressive cephalization, a new retino-thalamo-cortical system arises in amphibia and reptilia. The retino… CONTINUE READING

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