Results 81 to 90 of about 8,639 (218)

Notch receptor expression in the adult zebrafish optic tectum.

open access: yes, 2013
Cross-sections at the indicated level through the mesencephalon; optic tectum area shown in the micrographs is indicated in the cross section schematic in A. Brighfield images show the expression (by ISH) of A, notch1a, B, notch1b and C, notch3 along the
Vanessa de Oliveira-Carlos (455840)   +4 more
core   +1 more source

Meis1 specifies positional information in the retina and tectum to organize the zebrafish visual system

open access: yesNeural Development, 2010
Background During visual system development, multiple signalling pathways cooperate to specify axial polarity within the retina and optic tectum. This information is required for the topographic mapping of retinal ganglion cell axons on the tectum. Meis1
Erickson Timothy   +2 more
doaj   +1 more source

Little Known Facts, Controversies and Misconceptions About Cranial Motor Nuclei (and a New Classification for All Motoneurons, Cranial, and Spinal)

open access: yesJournal of Comparative Neurology, Volume 534, Issue 4, April 2026.
ABSTRACT Cranial nerves represent a notoriously complex province of the neuroanatomical landscape of the vertebrates. Here, we offer a selection of the anatomic, genetic, and developmental features of their efferent component that are often misrepresented, ignored or controversial, as a complement to more exhaustive treatments of the subject.
Margaux Sivori   +2 more
wiley   +1 more source

Chick PTPσ regulates the targeting of retinal axons within the optic tectum

open access: yes, 2002
Chick PTP (cPTP), also known as CRYP, is a receptor-like protein tyrosine phosphatase found on axons and growth cones. Putative ligands for cPTP are distributed within basement membranes and on glial end feet of the retina, optic nerve, and optic tectum,
Aricescu, AR   +5 more
core  

Nicotinic potentiation of frog retinotectal transmission in tectum layer F by α3β2, α4β2, α2β4, α6β2, or α7 acetylcholine receptor subtypes

open access: yesMedicina, 2015
Objective: The aim of the study was to explore the effect of semi-specific antagonists and agonists of the nicotinic acetylcholine receptors on the paired-pulse facilitation and nicotinic tonic and phasic potentiation of the frog retinotectal synaptic ...
Armuntas Baginskas   +2 more
doaj   +1 more source

Supplementary Material for: Allometric Scaling of the Optic Tectum in Cartilaginous Fishes

open access: yes, 2017
In cartilaginous fishes (Chondrichthyes; sharks, skates and rays (batoids), and holocephalans), the midbrain or mesencephalon can be divided into two parts, the dorsal tectum mesencephali or optic tectum (analogous to the superior colliculus of mammals ...
Lisney T.J. (3755686)   +1 more
core   +1 more source

Wulst efferents in the little owl Athene noctua: An investigation on the projections upon the optic tectum

open access: yes, 1992
The efferent projections from the Wulst were studied in the little owl, Athene noctua, using anterograde migration of wheat-germ-agglutinin conjugated horseradish peroxidase (WGA-HRP). Wulst projections were distributed to telencephalic, diencephalic and
BAGNOLI, PAOLA   +5 more
core   +1 more source

SINs and SOMs: Neural microcircuits for size tuning in the zebrafish and mouse visual pathway.

open access: yesFrontiers in Neural Circuits, 2013
In many animals, a fast and reliable circuit for discriminating between predator-sized objects and edible (prey-sized) objects is necessary for survival. How are receptive fields in visual brain areas organized to extract information about size?
Alison J. Barker   +2 more
doaj   +1 more source

Processing of local features in the zebrafish optic tectum [PDF]

open access: yes, 2018
The optic tectum is the main visual processing area in zebrafish and is involved in a variety of visually-driven behaviours. A key question is how information about the visual environment is processed and integrated in order to generate guided behaviour.
Bergmann, Katharina
core  

The developing chick isthmo-optic nucleus forms a transient efferent projection to the optic tectum

open access: yes, 1990
The present work describes the formation of a transient efferent axonal projection from the isthmo-optic nucleus (ION) to the ipsilateral optic tectum of the chick embryo. Local application of either the carbocyanine dye DiI or rhodamine-B-isothiocyanate
Wizenmann, A., Thanos, S.
core   +1 more source

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