Results 161 to 170 of about 8,639 (218)

Cytoarchitecture of the optic tectum in the nurse shark

Journal of Comparative Neurology, 1975
AbstractThe cytoarchitecture of the optic tectum of the nurse shark is described and related to the arrangements of afferents from retina, telencephalon and contralateral tectum. Its lamination is not pronounced when compared to tecta of most other non‐mammalian species but more comparable to those of mamals.
D M, Schroeder, S O, Ebbesson
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Development of microglia in the quail optic tectum

Journal of Comparative Neurology, 1994
AbstractThe development of microglia in the quail optic tectum from embryonic day 6 to adulthood was studied by using the QH1 monoclonal antibody. In youngest tecta, microglial cells were scarcely present, but their number rose in subsequent stages. A clear pattern of microglial cell distribution was observable in embryos of 9–16 days.
M A, Cuadros, A, Moujahid, A, Quesada, J, Navascués   +3 more
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Networks in the Lamprey Optic Tectum

2017
Critical to survival is the rapid detection and processing of events, registered by our senses, for the selection of an appropriate motor action. One essential task is to select or prioritize which of the many stimuli is most important for gaze reorientation.
Kardamakis, Andreas A., Pérez Fernández, Juan, Grillner, Sten   +2 more
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The goldfish optic tectum: A golgi study

Neuroscience, 1979
Abstract The detailed morphology of neurons in the optic tectum of the common goldfish, Carassius auratus, was reinvestigated using rapid Golgi and Golgi-Cox methods. Neurons were classified initially on the basis of the orientation of the primary dendritic processes within the tectum: vertical, horizontal and non-oriented.
M, Romeskie, S C, Sharma
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Glial cells in the chicken optic tectum

Brain Research, 2003
We mapped the distribution of the three neuroglial cells, oligodendrocytes, astrocytes and microglia, in the chicken optic tectum using their specific markers, transferrin binding protein (TfBP), glial fibrillary acidic protein (GFAP), and Ricinus communis agglutinin-1 (RCA-1), respectively.
Dong Hoon, Shin, Eunju, Lee, Sa Sun, Cho
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A golgi study of goldfish optic tectum

Journal of Comparative Neurology, 1978
AbstractA study of goldfish optic tectum was performed with rapid‐Golgi, Golgi‐Kopsch and a modified Golgi‐Cox impregnation which proved quite suitable to impregnate cells in the middle tectal layers and to study more closely axonal properties. Fifteen cell types are distinguished, based upon the position of dendritic trees and axonal properties.
J, Meek, N A, Schellart
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Regionalization of the optic tectum: combinations of gene expression that define the tectum

Trends in Neurosciences, 2001
The optic tectum differentiates from the alar plate of the mesencephalon. Here, the molecular mechanisms for differentiation of the tectum are reviewed. Mis-expression of Pax2, Pax5 or En can change the fate of the presumptive diencephalon to become the tectum.
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Interhemispheric Projections of the Optic Tectum in Pigeon

Brain, Behavior and Evolution, 2008
The anatomical patterns of intertectal pathways in pigeon (Columba livia) were studied with modifications of the Nauta-Gygax silver technique following discrete unilateral tectal lesions. No homotopic connections between the two optic tecta were found.
T J, Voneida, N K, Mello
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Regionalisation and acquisition of polarity in the optic tectum

Progress in Neurobiology, 2001
The optic tectum differentiates from the alar plate of the mesencephalon and receives retinal fibres in a precise retinotopic manner. Here, mechanisms of tectum polarisation and regionalisation are reviewed. Misexpression of Pax2, Pax5 or En can change the fate of the presumptive diencephalon to that of the tectum.
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Remarks on the Optic Tectum

1961
I am afraid Dr. Kornhuber has asked me to say something about the tectum not because I know anything about it, but simply because I should. The implication, of course, is that the tectum may be playing a role in the visual pattern discrimination possessed by my kittens after neonatal removal of area striata.
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