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Cortico cortical and subcortico cortical afferent connections of the rabbit's primary visual cortex a horseradish peroxidase study

Cortico cortical and subcortico cortical afferent connections of the rabbit's primary visual cortex a horseradish peroxidase study

Anatomy and Embryology 180(1): 81-88

Neuroanatomical studies were carried out on the visual system of the adult rabbit brain. Either horseradish peroxidase (HRP) or wheat germ agglutinine-horseradish peroxidase (WGA-HRP) was injected into the area occipitalis 1. Several cortico-cortical, ipsi- and contralateral, and subcortico-cortical projections were demonstrated. In the ipsilateral telencephalon several patches of labelled cell groups, some single HRP-positive cell bodies and some labelled fibres were observed in the area retrosplenialis granularis dorsalis, the areas occipitales, the areas temporales, the area perirhinalis, the area entorhinalis, the area praecentralis 1, the regio cingularis 1 and in the regio diagonalis, as well as in the dorsal part of the claustrum. Efferent preterminal fibres and terminal knobs were seen in the nucleus caudatus. Contralaterally, groups of labelled cell bodies and single HRP-positive neurons were found in the area retrosplenialis granularis dorsalis, the areas occipitales and the areas temporales. In the ipsilateral diencephalon, labelled cell bodies were observed in the corpus geniculatum laterale (pars dorsalis and ventralis), the nucleus lateralis thalami, the nucleus reticularis thalami and in nonspecific nuclei of the midline. Contralaterally, very few labelled cell bodies were seen in the nonspecific nuclei of the midline. Some labelled cell bodies were observed in the ipsilateral substantia griseum centrale and in the nucleus reticularis mesencephali. Numerous anterogradely labelled preterminal fibres and terminal knobs but very few labelled cell bodies were seen in the nucleus praetectalis posterior. In the nucleus of the optic tract and in the colliculus superior, numerous labelled fibres could be observed. In the ipsilateral nuclei pontis numerous labelled fibres were detectable.

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Accession: 007165041

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PMID: 2782615

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