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PROPRIOCEPTIVE NEURON IN THE SUBTHALAMIC AREA Takashi Tsubokawa 1 , Nobuo Moriyasu 1 1Department of Neurological Surgery,School of Medicine, Nihon University pp.589-598
Published Date 1970/5/1
DOI https://doi.org/10.11477/mf.1406202726
  • Abstract
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The effect of joint movement, touch, pressure, nocieption and peripheral nerve stimulation upon the discharge of the neurons of subthalamic area and subthalamic nucleus were examined under local anesthetized and artificially respirated cat. Later in the experiment, sodium pentobarbiturate was given and its effect upon the neuron was studied. Single unit activity was recorded with microelectrode. Limb movement was accomplished either manually or through a lever arrangement after fixing the pro-ximal limb joint.

1) The neurons responding to joint movement were recorded in the zona incerta and fields H1 and H2 of Forel. All of these neurons also responded to electrical stimulation bilateral peripheral nerve. No subthalamic neurons were found to respond to stimulation of the sural nerve, nor did they respond to nociceptive, tactile or pressure stimulation of the limbs.

2) The most frequently observed responding pat-tern, found in 84% of the cells sampled, was an on-response. The other neurons showed an on-off response, an arrest type response and complicated response.

3) The receptie field of these neurons are large and sometime covered all joint of the limbs.

4) The neurons responded to joint movement have not any fiber connection from the pallidum, but 28% of tested neurons responed to stimulation of the substantia nigra.

5) Under the nembutal anesthesia, the neurons were never responded to joint movement.

6) According to lesion expriments, this neuron get input from peripheral nerve through the cerebellum.

7) In the subthalamic nucleus, the neuron res-ponded to joint movement was not found and there was large difference neurophysiological property from the neurons of subthalamic area.

According to these results, the new proprioceptive afferent system through the cerebellum was found in the subthalamic area and this input system might has an important role to control extrapyramidal moter system.


Copyright © 1970, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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