Vestibular nucleus neurons respond to hindlimb movement in the decerebrate cat
Identifieur interne : 000872 ( Main/Exploration ); précédent : 000871; suivant : 000873Vestibular nucleus neurons respond to hindlimb movement in the decerebrate cat
Auteurs : Milad S. Arshian [États-Unis] ; Candace E. Hobson [États-Unis] ; Michael F. Catanzaro [États-Unis] ; Daniel J. Miller [États-Unis] ; Sonya R. Puterbaugh [États-Unis] ; Lucy A. Cotter [États-Unis] ; Bill J. Yates [États-Unis] ; Andrew A. Mccall [États-Unis]Source :
- Journal of Neurophysiology [ 0022-3077 ] ; 2014.
Descripteurs français
- KwdFr :
- Animaux, Chats, Décérébration (physiopathologie), Membre pelvien (physiopathologie), Microélectrodes, Mouvement (physiologie), Neurones (physiologie), Nez (physiopathologie), Noyaux vestibulaires (physiopathologie), Oreille (physiopathologie), Phénomènes biomécaniques, Proprioception (physiologie), Rotation, Stimulation électrique.
- MESH :
- physiologie : Mouvement, Neurones, Proprioception.
- physiopathologie : Décérébration, Membre pelvien, Nez, Noyaux vestibulaires, Oreille.
- Animaux, Chats, Microélectrodes, Phénomènes biomécaniques, Rotation, Stimulation électrique.
English descriptors
- KwdEn :
- Animals, Biomechanical Phenomena, Cats, Decerebrate State (physiopathology), Ear (physiopathology), Electric Stimulation, Hindlimb (physiopathology), Microelectrodes, Movement (physiology), Neurons (physiology), Nose (physiopathology), Proprioception (physiology), Rotation, Vestibular Nuclei (physiopathology).
- MESH :
- physiology : Movement, Neurons, Proprioception.
- physiopathology : Decerebrate State, Ear, Hindlimb, Nose, Vestibular Nuclei.
- Animals, Biomechanical Phenomena, Cats, Electric Stimulation, Microelectrodes, Rotation.
Abstract
The vestibular nuclei integrate information from vestibular and proprioceptive afferents, which presumably facilitates the maintenance of stable balance and posture. However, little is currently known about the processing of sensory signals from the limbs by vestibular nucleus neurons. This study tested the hypothesis that limb movement is encoded by vestibular nucleus neurons and described the changes in activity of these neurons elicited by limb extension and flexion. In decerebrate cats, we recorded the activity of 70 vestibular nucleus neurons whose activity was modulated by limb movements. Most of these neurons (57/70, 81.4%) encoded information about the direction of hindlimb movement, while the remaining neurons (13/70, 18.6%) encoded the presence of hindlimb movement without signaling the direction of movement. The activity of many vestibular nucleus neurons that responded to limb movement was also modulated by rotating the animal's body in vertical planes, suggesting that the neurons integrated hindlimb and labyrinthine inputs. Neurons whose firing rate increased during ipsilateral ear-down roll rotations tended to be excited by hindlimb flexion, whereas neurons whose firing rate increased during contralateral ear-down tilts were excited by hindlimb extension. These observations suggest that there is a purposeful mapping of hindlimb inputs onto vestibular nucleus neurons, such that integration of hindlimb and labyrinthine inputs to the neurons is functionally relevant.
Url:
DOI: 10.1152/jn.00855.2013
PubMed: 24671527
PubMed Central: 4044441
Affiliations:
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Le document en format XML
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Puterbaugh</name><affiliation wicri:level="2"><nlm:aff id="aff1">Department of Otolaryngology, University of Pittsburgh, Pittsburgh, Pennsylvania;</nlm:aff><country xml:lang="fr">États-Unis</country><placeName><region type="state">Pennsylvanie</region></placeName><wicri:cityArea>Department of Otolaryngology, University of Pittsburgh, Pittsburgh</wicri:cityArea></affiliation></author><author><name sortKey="Cotter, Lucy A" sort="Cotter, Lucy A" uniqKey="Cotter L" first="Lucy A." last="Cotter">Lucy A. Cotter</name><affiliation wicri:level="2"><nlm:aff id="aff1">Department of Otolaryngology, University of Pittsburgh, Pittsburgh, Pennsylvania;</nlm:aff><country xml:lang="fr">États-Unis</country><placeName><region type="state">Pennsylvanie</region></placeName><wicri:cityArea>Department of Otolaryngology, University of Pittsburgh, Pittsburgh</wicri:cityArea></affiliation></author><author><name sortKey="Yates, Bill J" sort="Yates, Bill J" uniqKey="Yates B" first="Bill J." last="Yates">Bill J. Yates</name><affiliation wicri:level="2"><nlm:aff id="aff1">Department of Otolaryngology, University of Pittsburgh, Pittsburgh, Pennsylvania;</nlm:aff><country xml:lang="fr">États-Unis</country><placeName><region type="state">Pennsylvanie</region></placeName><wicri:cityArea>Department of Otolaryngology, University of Pittsburgh, Pittsburgh</wicri:cityArea></affiliation><affiliation wicri:level="2"><nlm:aff wicri:cut="; and" id="aff2">Department of Neuroscience, University of Pittsburgh, Pittsburgh, Pennsylvania</nlm:aff><country xml:lang="fr">États-Unis</country><placeName><region type="state">Pennsylvanie</region></placeName><wicri:cityArea>Department of Neuroscience, University of Pittsburgh, Pittsburgh</wicri:cityArea></affiliation></author><author><name sortKey="Mccall, Andrew A" sort="Mccall, Andrew A" uniqKey="Mccall A" first="Andrew A." last="Mccall">Andrew A. Mccall</name><affiliation wicri:level="2"><nlm:aff id="aff1">Department of Otolaryngology, University of Pittsburgh, Pittsburgh, Pennsylvania;</nlm:aff><country xml:lang="fr">États-Unis</country><placeName><region type="state">Pennsylvanie</region></placeName><wicri:cityArea>Department of Otolaryngology, University of Pittsburgh, Pittsburgh</wicri:cityArea></affiliation></author></analytic><series><title level="j">Journal of Neurophysiology</title><idno type="ISSN">0022-3077</idno><idno type="eISSN">1522-1598</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Biomechanical Phenomena</term><term>Cats</term><term>Decerebrate State (physiopathology)</term><term>Ear (physiopathology)</term><term>Electric Stimulation</term><term>Hindlimb (physiopathology)</term><term>Microelectrodes</term><term>Movement (physiology)</term><term>Neurons (physiology)</term><term>Nose (physiopathology)</term><term>Proprioception (physiology)</term><term>Rotation</term><term>Vestibular Nuclei (physiopathology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Animaux</term><term>Chats</term><term>Décérébration (physiopathologie)</term><term>Membre pelvien (physiopathologie)</term><term>Microélectrodes</term><term>Mouvement (physiologie)</term><term>Neurones (physiologie)</term><term>Nez (physiopathologie)</term><term>Noyaux vestibulaires (physiopathologie)</term><term>Oreille (physiopathologie)</term><term>Phénomènes biomécaniques</term><term>Proprioception (physiologie)</term><term>Rotation</term><term>Stimulation électrique</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Mouvement</term><term>Neurones</term><term>Proprioception</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Movement</term><term>Neurons</term><term>Proprioception</term></keywords><keywords scheme="MESH" qualifier="physiopathologie" xml:lang="fr"><term>Décérébration</term><term>Membre pelvien</term><term>Nez</term><term>Noyaux vestibulaires</term><term>Oreille</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Decerebrate State</term><term>Ear</term><term>Hindlimb</term><term>Nose</term><term>Vestibular Nuclei</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Biomechanical Phenomena</term><term>Cats</term><term>Electric Stimulation</term><term>Microelectrodes</term><term>Rotation</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Animaux</term><term>Chats</term><term>Microélectrodes</term><term>Phénomènes biomécaniques</term><term>Rotation</term><term>Stimulation électrique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p>The vestibular nuclei integrate information from vestibular and proprioceptive afferents, which presumably facilitates the maintenance of stable balance and posture. However, little is currently known about the processing of sensory signals from the limbs by vestibular nucleus neurons. This study tested the hypothesis that limb movement is encoded by vestibular nucleus neurons and described the changes in activity of these neurons elicited by limb extension and flexion. In decerebrate cats, we recorded the activity of 70 vestibular nucleus neurons whose activity was modulated by limb movements. Most of these neurons (57/70, 81.4%) encoded information about the direction of hindlimb movement, while the remaining neurons (13/70, 18.6%) encoded the presence of hindlimb movement without signaling the direction of movement. The activity of many vestibular nucleus neurons that responded to limb movement was also modulated by rotating the animal's body in vertical planes, suggesting that the neurons integrated hindlimb and labyrinthine inputs. Neurons whose firing rate increased during ipsilateral ear-down roll rotations tended to be excited by hindlimb flexion, whereas neurons whose firing rate increased during contralateral ear-down tilts were excited by hindlimb extension. These observations suggest that there is a purposeful mapping of hindlimb inputs onto vestibular nucleus neurons, such that integration of hindlimb and labyrinthine inputs to the neurons is functionally relevant.</p></div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Illinois</li><li>Pennsylvanie</li></region></list><tree><country name="États-Unis"><region name="Pennsylvanie"><name sortKey="Arshian, Milad S" sort="Arshian, Milad S" uniqKey="Arshian M" first="Milad S." last="Arshian">Milad S. Arshian</name></region><name sortKey="Arshian, Milad S" sort="Arshian, Milad S" uniqKey="Arshian M" first="Milad S." last="Arshian">Milad S. Arshian</name><name sortKey="Catanzaro, Michael F" sort="Catanzaro, Michael F" uniqKey="Catanzaro M" first="Michael F." last="Catanzaro">Michael F. Catanzaro</name><name sortKey="Catanzaro, Michael F" sort="Catanzaro, Michael F" uniqKey="Catanzaro M" first="Michael F." last="Catanzaro">Michael F. Catanzaro</name><name sortKey="Cotter, Lucy A" sort="Cotter, Lucy A" uniqKey="Cotter L" first="Lucy A." last="Cotter">Lucy A. Cotter</name><name sortKey="Hobson, Candace E" sort="Hobson, Candace E" uniqKey="Hobson C" first="Candace E." last="Hobson">Candace E. Hobson</name><name sortKey="Mccall, Andrew A" sort="Mccall, Andrew A" uniqKey="Mccall A" first="Andrew A." last="Mccall">Andrew A. Mccall</name><name sortKey="Miller, Daniel J" sort="Miller, Daniel J" uniqKey="Miller D" first="Daniel J." last="Miller">Daniel J. Miller</name><name sortKey="Puterbaugh, Sonya R" sort="Puterbaugh, Sonya R" uniqKey="Puterbaugh S" first="Sonya R." last="Puterbaugh">Sonya R. Puterbaugh</name><name sortKey="Yates, Bill J" sort="Yates, Bill J" uniqKey="Yates B" first="Bill J." last="Yates">Bill J. Yates</name><name sortKey="Yates, Bill J" sort="Yates, Bill J" uniqKey="Yates B" first="Bill J." last="Yates">Bill J. Yates</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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