Effect of a nonspiking neuron on motor patterns of the leech
Premotor and motoneurons could play regulatory roles in motor control. We have investigated the role of a premotor nonspiking (NS) neuron of the leech nervous system in two locomotive patterns: swimming and crawling. The NS neuron is coupled through rectifying electrical junctions to all the excitat...
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223077_v107_n7_p1917_Rodriguez http://hdl.handle.net/20.500.12110/paper_00223077_v107_n7_p1917_Rodriguez |
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paper:paper_00223077_v107_n7_p1917_Rodriguez2023-06-08T14:49:11Z Effect of a nonspiking neuron on motor patterns of the leech Rodríguez, Mariano Julián Szczupak, Lidia Motoneurons Premotor inwardly rectifying potassium channel animal cell article cell population controlled study depolarization hyperpolarization leech locomotion membrane potential motoneuron motor performance nervous system nonhuman oscillation priority journal swimming Action Potentials Animals Dopamine Electric Stimulation Electrophysiology Leeches Motor Neurons Nervous System Patch-Clamp Techniques Swimming Premotor and motoneurons could play regulatory roles in motor control. We have investigated the role of a premotor nonspiking (NS) neuron of the leech nervous system in two locomotive patterns: swimming and crawling. The NS neuron is coupled through rectifying electrical junctions to all the excitatory motoneurons examined. In addition, activation of motoneurons evokes chemically mediated inhibitory responses in NS. During swimming and crawling, the NS membrane potential (Vm NS) oscillated phase locked to the motor output. Hyperpolarization or depolarization of NS had no effect on swimming, but hyperpolarization of NS slowed down the crawling activity and decreased the motoneuron firing frequency. Depolarization of NS increased the motoneuron activity, and, at stages where the crawling pattern was fading, depolarization of NS reinstated it. Future work should determine if NS is actually a member of the central pattern generator or a regulatory element. © 2012 the American Physiological Society. Fil:Rodriguez, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Szczupak, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223077_v107_n7_p1917_Rodriguez http://hdl.handle.net/20.500.12110/paper_00223077_v107_n7_p1917_Rodriguez |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
Motoneurons Premotor inwardly rectifying potassium channel animal cell article cell population controlled study depolarization hyperpolarization leech locomotion membrane potential motoneuron motor performance nervous system nonhuman oscillation priority journal swimming Action Potentials Animals Dopamine Electric Stimulation Electrophysiology Leeches Motor Neurons Nervous System Patch-Clamp Techniques Swimming |
spellingShingle |
Motoneurons Premotor inwardly rectifying potassium channel animal cell article cell population controlled study depolarization hyperpolarization leech locomotion membrane potential motoneuron motor performance nervous system nonhuman oscillation priority journal swimming Action Potentials Animals Dopamine Electric Stimulation Electrophysiology Leeches Motor Neurons Nervous System Patch-Clamp Techniques Swimming Rodríguez, Mariano Julián Szczupak, Lidia Effect of a nonspiking neuron on motor patterns of the leech |
topic_facet |
Motoneurons Premotor inwardly rectifying potassium channel animal cell article cell population controlled study depolarization hyperpolarization leech locomotion membrane potential motoneuron motor performance nervous system nonhuman oscillation priority journal swimming Action Potentials Animals Dopamine Electric Stimulation Electrophysiology Leeches Motor Neurons Nervous System Patch-Clamp Techniques Swimming |
description |
Premotor and motoneurons could play regulatory roles in motor control. We have investigated the role of a premotor nonspiking (NS) neuron of the leech nervous system in two locomotive patterns: swimming and crawling. The NS neuron is coupled through rectifying electrical junctions to all the excitatory motoneurons examined. In addition, activation of motoneurons evokes chemically mediated inhibitory responses in NS. During swimming and crawling, the NS membrane potential (Vm NS) oscillated phase locked to the motor output. Hyperpolarization or depolarization of NS had no effect on swimming, but hyperpolarization of NS slowed down the crawling activity and decreased the motoneuron firing frequency. Depolarization of NS increased the motoneuron activity, and, at stages where the crawling pattern was fading, depolarization of NS reinstated it. Future work should determine if NS is actually a member of the central pattern generator or a regulatory element. © 2012 the American Physiological Society. |
author |
Rodríguez, Mariano Julián Szczupak, Lidia |
author_facet |
Rodríguez, Mariano Julián Szczupak, Lidia |
author_sort |
Rodríguez, Mariano Julián |
title |
Effect of a nonspiking neuron on motor patterns of the leech |
title_short |
Effect of a nonspiking neuron on motor patterns of the leech |
title_full |
Effect of a nonspiking neuron on motor patterns of the leech |
title_fullStr |
Effect of a nonspiking neuron on motor patterns of the leech |
title_full_unstemmed |
Effect of a nonspiking neuron on motor patterns of the leech |
title_sort |
effect of a nonspiking neuron on motor patterns of the leech |
publishDate |
2012 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223077_v107_n7_p1917_Rodriguez http://hdl.handle.net/20.500.12110/paper_00223077_v107_n7_p1917_Rodriguez |
work_keys_str_mv |
AT rodriguezmarianojulian effectofanonspikingneurononmotorpatternsoftheleech AT szczupaklidia effectofanonspikingneurononmotorpatternsoftheleech |
_version_ |
1768542068311851008 |