Cited by 28Tactile and Sensory InteractionsNeuroscience and Neuropharmacology ResearchNeurotransmitter Receptor Influence on Behavior

The collateral projection from the dorsal raphe nucleus to whisker-related, trigeminal sensory and facial motor systems in the rat

Lee, Sat-Byol, Lee, Hyun S., Waterhouse, Barry D.·2008·Brain Research

Abstract

The primary goal of this study was to identify the collateral projection from the dorsal raphe (DR) nucleus to whisker-related, trigeminal sensory and facial motor systems in the rat. Following the injections of two retrograde tracers, gold-conjugated and inactivated wheatgerm agglutinin-horseradish peroxidase (WGA-apo-HRP-gold) and Fluorogold (FG) within vibrissae-related, sensory and motor areas at the cerebral cortical, thalamic, and medullary levels, the distribution of double-labeled neurons was examined within each subdivision of the DR. The major findings were: 1) the 5-HT-immunoreactive, DR neurons projecting to vibrissae-related, primary sensory and motor cortices were mainly observed in the ventromedial subdivision, with a few cells in the dorsomedial subdivision; 2) the DR neurons projecting to ventroposteromedial and ventrolateral thalamic nuclei were observed in the lateral wing subdivision ipsilateral to the injection sites; and 3) the DR neurons projecting to vibrissae-related, principal trigeminal and facial motor nuclei were also located mainly in the lateral wing subdivision ipsilateral to the injection sites. Taken together, these observations provide evidence that midline vs. lateral wing DR subdivisions have a differential functional organization with respect to their efferent projection systems and that individual DR neurons in each subdivision might preferentially send axon collaterals to sensory and motor whisker system targets, thus providing an anatomical substrate for coordination of whisker movement and tactile sensory coding.

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Crossref · 10.1016/j.brainres.2008.04.003

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  • The dorsolateral subregion innervates many subcortical sensory and hypothalamic nuclei, in addition to motor nuclei in the brainstem.

    “The dorsolateral subregion innervates many subcortical sensory and hypothalamic nuclei, in addition to motor nuclei in the brainstem (Lee et al., 2008; Muzerelle et al., 2016).”

    From Molecular and anatomical organization of the dorsal raphe nucleus (2019) · cites this paper as Lee et al., 2008

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Authors
Lee, S.-B., Lee, H. S., & Waterhouse, B. D.
Affiliations
  • Konkuk University (KR)
  • Drexel University (US)
Venue
Brain Research
Publisher
Elsevier BV
Published
2008-06
Volume
1214
Pages
11-22
ISSN
0006-8993 (ISSN-L)
OpenAlex
W2058266969
Cited by
27
References
43
Citations by year
2024: 1 · 2022: 1 · 2020: 2 · 2019: 2 · 2018: 1 · 2017: 2 · 2015: 3 · 2014: 2 · 2013: 2 · 2012: 1
FWCI
1.72
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
dorsal raphe nucleus, serotonin, collateral projections, whisker system, trigeminal sensory nucleus
MeSH terms
Animals, Brain Mapping, Female, Male, Motor Cortex, Neural Pathways, Neurons, Raphe Nuclei, Serotonin, Stilbamidines, Trigeminal Nuclei, Vibrissae, Rats, Sprague-Dawley, Wheat Germ Agglutinin-Horseradish Peroxidase Conjugate, Rats

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