Rolling movements and the ascending vestibulary connections : (fasciculus Deiters ascendens) / by L.J.J. Muskens ; [communicated by J.K.A. Wertheim Salomonson].

  • Muskens, Louis Jacob Josef, 1872-1937.
Date:
1913
Catalogue details

Licence: In copyright

Credit: Rolling movements and the ascending vestibulary connections : (fasciculus Deiters ascendens) / by L.J.J. Muskens ; [communicated by J.K.A. Wertheim Salomonson]. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    rolling movement. It will be recalled, that for the forced movement in the horizontal plane (circus-movement) the Co m m is uro-medullary bundle tills up that gap. In this bundle we can recognize Sherrington's “final common path”, by whatever reflex-arrangements the circus movement (with the conjugated deviation of head and eyes) is provoked. As a general result it may now be safely concluded, that my supposition of 1902 *) proved right, that the P. L. B. system plays an important role in the physiology of the forced movements, in the horizontal plane (circus) and in the vertical plane, standing vertical to the bodily axis (rolling). Long before this Bleuler, Duval and Laborde, Caygal, Edlnger Held, Boyce* 2) et al. Imd hinted to such a relation; Bleuler had directly urged the need of experimental work on the P. L. B., which as far as I am aware till now has been neglected. Advancing knowledge of anatomical connections has, for many years, made it probable, that ascending vestibulary neura split up in particular divisions of the Oculomotor Nuclei (Wallenberg3 4). Descending fibres in the P. L. B. were demonstrated by van Gehuchten ) Gee and Tooth5 *) and Kohnstamm °) down to the lumbar region. Probst, Spitzer, L. Kaplan and L. Finklenburg 7) proved, that the ascending fibres were of vestibulary origin and thence declared their function, to be of equilibratory character. Monakow, Ferrier and Turner, Lloyd Thomas, Lewandowsky, Winkler and van Gehuchten added materially to our knowledge of the anatomical analysis of the P. L. B. formation. Probst discovered that from Bechterews nucleus most ascending fibres are homolateral and Wallenberg succeeded in showing in birds, that the innermost fibres in this structure are derived from the contralateral vestibulary nuclei. Yet, the physiological analysis of this region made very little progress. As to the descending tracts to Darkschewitch8) Boyce, Redlich 9) we owe details about the grey masses about the posterior commissure, but no special research was reported about the accurate relation of these nuclei and the descend- ing fibres in the P. L. B., as far as I am aware. It may be observed that only recently Cayal’s accurate description of this region in the chicken and Fuse’s detailed account, from Monakow’s laboratory, on the vestibulary nuclei, as also Horsley and Clarke’s researches have cleared the road for the physiological analysis. ]) Transactions Royal Dutch Academy 1902. 2) Philosophical Transactions 1898. Vol. 186. P. 325. 3) Schmidt’s Jahrbiichen. 1899. q[ 4) Academie royale de Belgique. 1895. Brain. 1898. c) Monatschrift f. Psychiatrie und Neurologie. 1900. Vol. Vlll 7) Monatschrift f Psych, u. Neur. 1900. Vol. Vlll. P. 210. D Pfluuer. Archiv. Vol. 36. P. 639. 9) Monatschrift f. Psych, u. Neurol. 1899. Vol. V. P. 119.