The development and subdivisions of the cerebellum of birds

The Organization of the Olivocerebellar Projection in the Chicken

“…Although Larsell [1948] has named subdivisions of folia 5, 6, 8, and 9 in the chicken, the present study refers only to subdivisions of folium 9 and does not con sider the subdivisions of other folia.…”

“…A diagrammatic representation of the re sults from an injection of HRP in folium 8. A sagittal section of the cerebellum containing the injection site is presented and the folia are marked according to Larsell [1948]. The main region of the injection site (folium 8) has been shown blackened and the other cerebellar folia (folium 7 and folium 9a-9b) which contain light diffuse spread of HRP are marked with stipple.…”

“…1948]. The avian cerebellum consists of ten main folds which Larsell [ 1948] has called folia 1-10 (numbered in an anterior to posterior direction). From a compari son of the embryonic and adult cerebel lum in birds with mammals, Larsell[ 1967] Fig.…”

“…In birds, the greater part of the cerebellum is be lieved to correspond to the vermis of the cerebellum in mammals and the lateral lobes are very small [Whitlock, 1952], The small lateral lobes of the avian cerebellum have been called the auricle; the avian au ricle comprises a paraflocculus and a floc culus [Larsell. 1948].…”

Effect of Reserpine on the Differentiation of the External Granular Layer of the Cerebellum in the Chick Embryo

“…All our observations were done on the folium VI e of Larsell's [ 1948] classification. External granular layer cell nuclei were counted with a Leitz square-millimeter ocular reticule, thus obtaining their density per unit area.…”