Cited by 23Vestibular and auditory disordersVisual perception and processing mechanismsNeuroscience and Neuropharmacology Research

A morphological study of abducens nucleus motoneurons and internuclear neurons in the goldfish (Carassius auratus)

Cabrera, B., Torres, B., Pásaro, R., Pastor, A.M., Delgado-García, J.M.·1992·Brain Research Bulletin

Abstract

The location and distribution of abducens (ABD) nucleus motoneurons (Mn) and internuclear neurons (Int) were determined in the goldfish (Carassius auratus) by means of horseradish peroxidase and fluorochrome retrograde labeling. ABD Mn were labeled following tracer injection into the ipsilateral lateral rectus muscle. These Mn were arranged in two ventrolateral clusters along the rostro-caudal axis of the posterior brainstem. Both groups of neurons showed a similar number of cells, and their axons ran ventrally to their respective nerve roots. ABD Int were labeled following the injection of the tracer into the contralateral oculomotor nucleus. They also formed two distinct groups in the rostro-caudal axis. The rostral group of Int formed a dorso-lateral cap around the caudal motoneuronal pool, with little if any intermingling. The caudal group of Int was located at the same position in the dorso-ventral and medio-lateral axis as the rostral group, but 500 microns behind it. Both groups of ABD Int had a similar number of neurons. Int axons ascended dorso-medially, then crossed the midline through the internal arcuate fibers, and entered the contralateral medial longitudinal fasciculus. The soma diameters of both ABD Mn and Int were not significantly different. The relative location of both types of neurons is discussed.

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Crossref · 10.1016/0361-9230(92)90241-o

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Authors
Cabrera, B., Torres, B., Pásaro, R., Pastor, A. M., & Delgado-García, J. M.
Affiliations
Universidad de Sevilla (ES)
Corresponding author
Cabrera, B.
Venue
Brain Research Bulletin
Publisher
Elsevier BV
Published
1992-01
Volume
28
Issue
1
Pages
137-144
ISSN
0361-9230 (ISSN-L)
OpenAlex
W2044027491
Cited by
23
References
33
Citations by year
2024: 1 · 2021: 1 · 2020: 4 · 2019: 1 · 2018: 3 · 2014: 1 · 2013: 1 · 2012: 1
FWCI
0.28
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research Bulletin (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Neurology › Vestibular and auditory disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
abducens nucleus, motor neurons, goldfish, lateral rectus muscle, oculomotor nucleus, medial longitudinal fasciculus
MeSH terms
Animals, Brain Stem, Goldfish, Interneurons, Motor Neurons

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