The Effect of Brain Stem Irradiation on Descending Systems to the Spinal Cord

Brain stem and cerebellar irradiation was found to affect brain stem conditioned lumbar cord flexor and extensor monosynaptic reflexes. The preconditioning extensor and flexor monosynaptic reflexes were either both inhibited or both facilitated. The conditioned reflex was affected conversely; i.e.,...

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Bibliographic Details
Published in:Radiation research 1970-11, Vol.44 (2), p.404-412
Main Authors: Olson, Karin E., Barnes, Charles D.
Format: Article
Language:English
Subjects:
Animals
Babinski reflex
Brain stem
Brain Stem - radiation effects
Cats
Cerebellum
Cerebellum - radiation effects
Conditioning, Classical
Electrodes
Flexors
Monosynaptic reflex
Neurons
Radiation Effects
Reflex, Monosynaptic - radiation effects
Righting reflex
Spinal cord
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Description
Summary:Brain stem and cerebellar irradiation was found to affect brain stem conditioned lumbar cord flexor and extensor monosynaptic reflexes. The preconditioning extensor and flexor monosynaptic reflexes were either both inhibited or both facilitated. The conditioned reflex was affected conversely; i.e., the flexor tended to be facilitated while the extensor was inhibited. Radiation appeared to affect a balance of brain stem level interaction on the descending systems to the spinal cord. The cerebellum seems to take part in the mediation of this balance since decrebellates did not show an effect of radiation.
ISSN:0033-7587
1938-5404
DOI:10.2307/3573202