Midbrain

Puelles, Eduardo; Martı́nez-de-la-Torre, Margaret; Watson, Charles; Puelles, Luis

doi:10.1016/b978-0-12-369497-3.10010-x

Cited by 139 publications

(383 citation statements)

References 50 publications

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“…Every fifth microscope slide was incubated for 40 seconds in 0.1% Thionin (Serva, Heidelberg, Germany) for Nissl staining to enable identification of brain areas according to the chicken brain map [44]. Based on the location of the anterior commissure, sections for the in situ hybridization were selected enabling the best possible comparison between treatment groups and sexes.…”

Section: Ar Mrna Expressionmentioning

confidence: 99%

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Examining a pathway for hormone mediated maternal effects – Yolk testosterone affects androgen receptor expression and endogenous testosterone production in young chicks (Gallus gallus domesticus)

Pfannkuche

Gahr

Weites

et al. 2011

General and Comparative Endocrinology

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Section: Ar Mrna Expressionmentioning

confidence: 99%

“…1. (A) Scheme of chicken brain areas and nuclei in the right hemisphere located around the anterior commissure (see also [44], Fig. 14).…”

Section: Ar Mrna Expressionmentioning

confidence: 99%

Examining a pathway for hormone mediated maternal effects – Yolk testosterone affects androgen receptor expression and endogenous testosterone production in young chicks (Gallus gallus domesticus)

Pfannkuche

Gahr

Weites

et al. 2011

General and Comparative Endocrinology

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“…In terms of delineating the three regions, we adhered to descriptions in the literature (see below) as well as to several stereotaxic atlases [Karten and Hodos, 1967;Stokes et al, 1974;Matochik et al, 1991, Puelles et al, 2007.edu/psyc/ Brauthlab/atlas.htm]. We defined the TeO as all laminated layers of the tectum ( fig.…”

Section: Measurementsmentioning

confidence: 99%

Allometric Scaling of the Tectofugal Pathway in Birds

et al. 2010

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Recent studies have shown that the relative sizes of visual regions in the avian brain are correlated with behavioral differences among species. Despite the fact that the tectofugal pathway is the primary source of visual input to the avian brain, detailed interspecific comparisons of the relative size of nuclei within the pathway, the optic tectum, nucleus rotundus and entopallium, are wanting. Here, we examine the allometric scaling relationships of each of these brain regions relative to the brain as a whole using conventional and phylogenetically based statistics across 113 species. Our results show that the relative size of tectofugal regions of the avian brain varies significantly among avian orders. More specifically, waterfowl (Anseriformes), parrots (Psittaciformes) and owls (Strigiformes) have significantly smaller tectofugal brain regions than other birds. At the opposite end of the spectrum, we found little evidence for the significant enlargement of any tectofugal region among the orders that we sampled. The lack of such hypertrophy likely reflects the heterogeneous organization of the optic tectum, nucleus rotundus and entopallium. We therefore speculate that if neural adaptations do exist in the avian tectofugal pathway that are correlated with behavior, they occur at a more refined level than simple volumetrics.

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“…Sections were mounted on glass slides, dehydrated and cover-slipped with Eukitt (c) (Sigma). Because AchE has previously been shown to label PrV and SpV substructures [26,58], in one corresponding serial set of sections, AchE activity was mapped to facilitate determination of the anatomical boundaries of PrV and SpV. To test for specificity of the reagents and antibody, control sections from one bird were stained in exactly the same way in parallel, thereby either omitting the first antibody or preincubating the antibody with the respective blocking peptide encoding for ZENK protein.…”

Section: Behavioural Molecular Mappingmentioning

confidence: 99%

Magnetic field-driven induction of ZENK in the trigeminal system of pigeons ( Columba livia )

Lefeldt

Heyers

Schneider

et al. 2014

J. R. Soc. Interface.

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Magnetoreception remains one of the few unsolved mysteries in sensory biology. The upper beak, which is innervated by the ophthalmic branch of the trigeminal nerve (V1), has been suggested to contain magnetic sensors based on ferromagnetic structures. Recently, its existence in pigeons has been seriously challenged by studies suggesting that the previously described iron-accumulations are macrophages, not magnetosensitive nerve endings. This raised the fundamental question of whether V1 is involved in magnetoreception in pigeons at all. We exposed pigeons to either a constantly changing magnetic field (CMF), to a zero magnetic field providing no magnetic information, or to CMF conditions after V1 was cut bilaterally. Using immediate early genes as a marker of neuronal responsiveness, we report that the trigeminal brainstem nuclei of pigeons, which receive V1 input, are activated under CMF conditions and that this neuronal activation disappears if the magnetic stimuli are removed or if V1 is cut. Our data suggest that the trigeminal system in pigeons is involved in processing magnetic field information and that V1 transmits this information from currently unknown, V1-associated magnetosensors to the brain.

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Midbrain

Cited by 139 publications

References 50 publications

Examining a pathway for hormone mediated maternal effects – Yolk testosterone affects androgen receptor expression and endogenous testosterone production in young chicks (Gallus gallus domesticus)

Examining a pathway for hormone mediated maternal effects – Yolk testosterone affects androgen receptor expression and endogenous testosterone production in young chicks (Gallus gallus domesticus)

Allometric Scaling of the Tectofugal Pathway in Birds

Magnetic field-driven induction of ZENK in the trigeminal system of pigeons ( Columba livia )

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