Premotor nonspiking neurons regulate coupling among motoneurons that innervate overlapping muscle fiber population
Recent work indicated that co-activity of different motoneurons (MNs) in the leech can be regulated through a network that is centered on a pair of nonspiking (NS) neurons. Here, we investigate whether this effect generalizes to different types of MNs that display differential co-activity patterns i...
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2009
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v195_n5_p491_Rodriguez http://hdl.handle.net/20.500.12110/paper_03407594_v195_n5_p491_Rodriguez |
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paper:paper_03407594_v195_n5_p491_Rodriguez2023-06-08T15:34:23Z Premotor nonspiking neurons regulate coupling among motoneurons that innervate overlapping muscle fiber population Rodríguez, Mariano Julián Perez Etchegoyen, C. Bernardo Szczupak, Lidia Electrical coupling Leech Motor circuits Nonspiking neuron Rectifying junctions animal article classification ganglion innervation leech motoneuron muscle nerve cell patch clamp physiology synapse synaptic transmission Animals Ganglia, Invertebrate Leeches Motor Neurons Muscles Neurons Patch-Clamp Techniques Synapses Synaptic Transmission Recent work indicated that co-activity of different motoneurons (MNs) in the leech can be regulated through a network that is centered on a pair of nonspiking (NS) neurons. Here, we investigate whether this effect generalizes to different types of MNs that display differential co-activity patterns in different motor behaviors: the dorsal longitudinal excitors DE-3 and the dorsal and ventral excitors MN-L. The data indicates that both motoneurons are coupled to the NS neurons through rectifying junctions that are activated when the motoneuron membrane potential becomes more negative than that of the NS, and that they exert an inhibitory synaptic potential on NS via a polysynaptic pathway. In addition, DE-3 and MN-L are linked by junctions that allow mutual excitation but the transmission of excitatory signals from MN-L to DE-3 depended on NS membrane potential. The results support the view that NS neurons can play a central role in orchestrating the co-activity of MNs during motor behaviors. © 2009 Springer-Verlag. Fil:Rodriguez, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Perez-Etchegoyen, C.B. 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. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v195_n5_p491_Rodriguez http://hdl.handle.net/20.500.12110/paper_03407594_v195_n5_p491_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 |
Electrical coupling Leech Motor circuits Nonspiking neuron Rectifying junctions animal article classification ganglion innervation leech motoneuron muscle nerve cell patch clamp physiology synapse synaptic transmission Animals Ganglia, Invertebrate Leeches Motor Neurons Muscles Neurons Patch-Clamp Techniques Synapses Synaptic Transmission |
spellingShingle |
Electrical coupling Leech Motor circuits Nonspiking neuron Rectifying junctions animal article classification ganglion innervation leech motoneuron muscle nerve cell patch clamp physiology synapse synaptic transmission Animals Ganglia, Invertebrate Leeches Motor Neurons Muscles Neurons Patch-Clamp Techniques Synapses Synaptic Transmission Rodríguez, Mariano Julián Perez Etchegoyen, C. Bernardo Szczupak, Lidia Premotor nonspiking neurons regulate coupling among motoneurons that innervate overlapping muscle fiber population |
topic_facet |
Electrical coupling Leech Motor circuits Nonspiking neuron Rectifying junctions animal article classification ganglion innervation leech motoneuron muscle nerve cell patch clamp physiology synapse synaptic transmission Animals Ganglia, Invertebrate Leeches Motor Neurons Muscles Neurons Patch-Clamp Techniques Synapses Synaptic Transmission |
description |
Recent work indicated that co-activity of different motoneurons (MNs) in the leech can be regulated through a network that is centered on a pair of nonspiking (NS) neurons. Here, we investigate whether this effect generalizes to different types of MNs that display differential co-activity patterns in different motor behaviors: the dorsal longitudinal excitors DE-3 and the dorsal and ventral excitors MN-L. The data indicates that both motoneurons are coupled to the NS neurons through rectifying junctions that are activated when the motoneuron membrane potential becomes more negative than that of the NS, and that they exert an inhibitory synaptic potential on NS via a polysynaptic pathway. In addition, DE-3 and MN-L are linked by junctions that allow mutual excitation but the transmission of excitatory signals from MN-L to DE-3 depended on NS membrane potential. The results support the view that NS neurons can play a central role in orchestrating the co-activity of MNs during motor behaviors. © 2009 Springer-Verlag. |
author |
Rodríguez, Mariano Julián Perez Etchegoyen, C. Bernardo Szczupak, Lidia |
author_facet |
Rodríguez, Mariano Julián Perez Etchegoyen, C. Bernardo Szczupak, Lidia |
author_sort |
Rodríguez, Mariano Julián |
title |
Premotor nonspiking neurons regulate coupling among motoneurons that innervate overlapping muscle fiber population |
title_short |
Premotor nonspiking neurons regulate coupling among motoneurons that innervate overlapping muscle fiber population |
title_full |
Premotor nonspiking neurons regulate coupling among motoneurons that innervate overlapping muscle fiber population |
title_fullStr |
Premotor nonspiking neurons regulate coupling among motoneurons that innervate overlapping muscle fiber population |
title_full_unstemmed |
Premotor nonspiking neurons regulate coupling among motoneurons that innervate overlapping muscle fiber population |
title_sort |
premotor nonspiking neurons regulate coupling among motoneurons that innervate overlapping muscle fiber population |
publishDate |
2009 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v195_n5_p491_Rodriguez http://hdl.handle.net/20.500.12110/paper_03407594_v195_n5_p491_Rodriguez |
work_keys_str_mv |
AT rodriguezmarianojulian premotornonspikingneuronsregulatecouplingamongmotoneuronsthatinnervateoverlappingmusclefiberpopulation AT perezetchegoyencbernardo premotornonspikingneuronsregulatecouplingamongmotoneuronsthatinnervateoverlappingmusclefiberpopulation AT szczupaklidia premotornonspikingneuronsregulatecouplingamongmotoneuronsthatinnervateoverlappingmusclefiberpopulation |
_version_ |
1768545738457874432 |