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  1. No Access

    Article

    Development and developmental disorders of the human cerebellum

    The human cerebellum develops over a long time, extending from the early embryonic period until the first postnatal years. This protracted development makes the cerebellum vulnerable to a broad spectrum of dev...

    H. J. ten Donkelaar, M. Lammens, P. Wesseling, H. O. Thijssen… in Journal of Neurology (2003)

  2. No Access

    Article

    Severe, non X-linked congenital microcephaly with absence of the pyramidal tracts in two siblings

    In two siblings (a female and a male neonate), severe microcephaly, bilateral absence of the pyramids, severe hypoplasia of the cerebral peduncles, and dysplasia of the inferior olives was found together with...

    H. J. ten Donkelaar, P. Wesseling, B. A. Semmekrot, K. D. Liem… in Acta Neuropathologica (1999)

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    Article

    Early development of descending supraspinal pathways: a tracing study in fixed and isolated rat embryos

     Early brainstem-spinal cord projections were studied in the rat using the carbocyanine dye DiI in fixed embryos and biotinylated dextran amine (BDA) in an isolated embryonic brain-spinal cord preparation. A s...

    R. T. de Boer-van Huizen, H. J. ten Donkelaar in Anatomy and Embryology (1999)

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    Article

    Observations on the development of ascending spinal pathways in the clawed toad, Xenopus laevis

    The development of ascending spinal pathways has been studied in the clawed toad, Xenopus laevis. From stage 35 (hatching) on, HRP was applied at the spinomedullary border or to the area of the develo** dorsal ...

    H. J. ten Donkelaar, R. de Boer-van Huizen in Anatomy and Embryology (1991)

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    Article

    Brain stem afferents to the anterior dorsal ventricular ridge in a lizard (Varanus exanthematicus)

    The anterior dorsal ventricular ridge (ADVR), a large intraventricular protrusion in the reptilian forebrain, receives information from many different sensory modalities and in turn, projects massively onto th...

    H. J. ten Donkelaar, R. de Boer-van Huizen in Anatomy and Embryology (1988)

  6. No Access

    Article

    Observations on the development of cerebellar afferents in Xenopus laevis

    The development of cerebellar afferents has been studied in the clawed toad, Xenopus laevis, from stage 46 to 64, with the horseradish peroxidase retrograde tracer technique. Already in stage 48 tadpoles, i.e. be...

    J. A. M. van der Linden, H. J. ten Donkelaar in Anatomy and Embryology (1987)

  7. No Access

    Article

    The development of the dendritic organization of primary and secondary motoneurons in the spinal cord of Xenopus laevis

    During embryonic and larval development of the clawed toad, Xenopus laevis, two different populations of motoneurons appear in the spinal cord. In this study the development of primary motoneurons which innervate...

    P. van Mier, R. van Rheden, H. J. ten Donkelaar in Anatomy and Embryology (1985)

  8. No Access

    Article

    The fasciculus longitudinalis medialis in the lizard Varanus exanthematicus

    In the present study the vestibular components of the fasciculus longitudinalis medialis (flm) were investigated in the lizard Varanus exanthematicus with various tracing techniques: anterograde transport of hors...

    H. J. ten Donkelaar, G. C. Bangma, R. de Boer-van Huizen in Anatomy and Embryology (1985)

  9. No Access

    Article

    Morphology of primary afferents to the spinal cord of the turtle Pseudemys scripta elegans

    The morphology of primary afferents to the spinal cord of the turtle Pseudemys scripta elegans was studied by means of intra-axonal injections of horseradish peroxidase. A total of 74 collaterals arising from 34 ...

    T. J. H. Ruigrok, A. Crowe, H. J. Ten Donkelaar in Anatomy and Embryology (1985)

  10. No Access

    Article

    Early development of descending pathways from the brain stem to the spinal cord in Xenopus laevis

    The early development of descending pathways from the brain stem to the spinal cord has been studied in Xenopus laevis tadpoles. The relatively protracted development of this permanently aquatic amphibian as well...

    P. van Mier, H. J. ten Donkelaar in Anatomy and Embryology (1984)

  11. No Access

    Article

    The fasciculus longitudinalis medialis in the lizard Varanus exanthematicus

    With the horseradish peroxidase (HRP) technique the various descending components of the medial longitudinal fasciculus (flm) have been studied in the lizard Varanus exanthematicus. After wheat germ agglutinin co...

    H. J. ten Donkelaar, R. de Boer-van Huizen in Anatomy and Embryology (1984)

  12. No Access

    Article

    Cerebellar connections in Xenopus laevis

    In the present study the cerebellar afferents in the clawed toad Xenopus laevis have been analysed with the horseradish peroxidase (HRP) technique. In addition, data on the efferent connections of the cerebellum ...

    A. Gonzalez, H. J. ten Donkelaar, R. de Boer-van Huizen in Anatomy and Embryology (1984)

  13. No Access

    Article

    Reticulospinal and vestibulospinal pathways in the snake Python regius

    In the present HRP study extensive reticulospinal projections and more modestly developed vestibulospinal pathways have been demonstrated in the snake Python regius. The funicular trajectories of the main reticul...

    H. J. ten Donkelaar, G. C. Bangma, R. de Boer-van Huizen in Anatomy and Embryology (1983)

  14. No Access

    Article

    Observations on the development of descending pathways from the brain stem to the spinal cord in the clawed toad Xenopus laevis

    Anurans such as the clawed toad Xenopus laevis offer a unique opportunity to study the ontogeny of descending pathways to the spinal cord. Their transition from aquatic limbless tadpole to juvenile toad occurs ov...

    H. J. ten Donkelaar, R. de Boer-van Huizen in Anatomy and Embryology (1982)

  15. No Access

    Article

    Neurogenesis in the basal forebrain in the Chinese hamster (Cricetulus griseus)

    In the present study the morphogenesis of the ventricular ridges, i.e. the site of origin for neurons in the basal ganglia and various related basal forebrain structures, has been studied in the Chinese hamste...

    G. J. Lammers, A. A. M. Gribnau, H. J. ten Donkelaar in Anatomy and Embryology (1980)

  16. No Access

    Article

    Neurogenesis in the basal forebrain of the Chinese hamster (Cricetulus griseus)

    The time of neuron origin has been determined in the basal ganglia and related basal forebrain structures of the Chinese hamster with the aid of 3H-thymidine autoradiography. Large-celled structures like the glob...

    H. J. ten Donkelaar, P. J. W. Dederen in Anatomy and Embryology (1979)

  17. No Access

    Article

    Stages in the prenatal development of the Chinese hamster (Cricetulus griseus)

    A system of staging embryos is described for the Chinese hamster (Cricetulus griseus). This system of staging, based on Streeter's developmental horizons in human embryos, comprises three sets of criteria: 1) dat...

    H. J. ten Donkelaar, L. G. M. Geysberts, P. J. W. Dederen in Anatomy and Embryology (1979)