The pyramidal tract of the monkeys. A betz cell and pyramidal tract enumeration

@article{Lassek1941ThePT,
  title={The pyramidal tract of the monkeys. A betz cell and pyramidal tract enumeration},
  author={Arthur M. Lassek},
  journal={Journal of Comparative Neurology},
  year={1941},
  volume={74}
}
  • A. M. Lassek
  • Published 1 April 1941
  • Biology
  • Journal of Comparative Neurology

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References

SHOWING 1-10 OF 14 REFERENCES

THE HUMAN PYRAMIDAL TRACT: II. A NUMERICAL INVESTIGATION OF THE BETZ CELLS OF THE MOTOR AREA

An attempt has been made to determine the number of corticospinal fibers entering the spinal cord of man from the Betz cells of the motor area of man, using the Bielschowsky technic.

THE HUMAN PYRAMIDAL TRACT: A FIBER AND NUMERICAL ANALYSIS

Because of the lack of agreement existing in respect to the origin of the pyramidal tract, it was thought that the application of a refined silver stain to the lower part of the human pyramid might

FASERANALYTISCHE STUDIEN ÜBER DIE PYRAMIDENBAHN 1

In zwei Publikationen des laufenden Jahres habe ich gewisse, von einem bisher nicht beachteten Ausgangspunkt ausgefuhrte Studien uber die Leitungsbahnen im Ruckenmark vorgelegt. Ich habe namlich

THE QUANTITATIVE DISTRIBUTION OF THE PYRAMIDAL TRACT IN MAN

It seems permissible to conclude that the increment in pyramidal volume is proportional to that increasing demand for control of motor performances made possible through the progressive development of the hand.

CORTICOSPINAL FIBERS ARISING IN THE PREMOTOR AREA OF THE MONKEY: AS DEMONSTRATED BY THE MARCHI METHOD

A systematic examination of the course of nonpyramidal corticospinal fibers, as well as of their cells of origin, has been undertaken, and this article records the results.

Staining Paraffin Sections with Protargol: 1. Experiments with Bodian's Method. 2. Use of Jvpropyl and N-Butyl Alcohol in Hofker's Fixative:

Paraffin sections of nervous tissue, which had been fixed in Hofker's fluid, stained readily with protargol solution without the addition of metallic copper or other activator. Amidolsulfite mixtures