Processing of sensory signals by a non-spiking neuron in the leech

The non-spiking neurons 151 are present as bilateral pairs in each midbody ganglion of the leech nervous system and they are electrically coupled to several motorneurons. Intracellular recordings were used to investigate how these neurons process input from the mechanosensory P neurons in isolated g...

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Autores principales:	Marín Burgin, Antonia, Szczupak, Lidia
Publicado:	2000
Materias:	Leech Mechanosensory Non-spiking Sensory processing Strychnine poison strychnine action potential animal article cytology drug effect electrophysiology ganglion interneuron leech mechanoreceptor movement (physiology) physiology sensory nerve cell synapse Action Potentials Animals Electrophysiology Ganglia, Invertebrate Interneurons Leeches Mechanoreceptors Movement Neurons, Afferent Poisons Synapses
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v186_n10_p989_MarinBurgin http://hdl.handle.net/20.500.12110/paper_03407594_v186_n10_p989_MarinBurgin
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_03407594_v186_n10_p989_MarinBurgin
record_format	dspace
spelling	paper:paper_03407594_v186_n10_p989_MarinBurgin2023-06-08T15:34:15Z Processing of sensory signals by a non-spiking neuron in the leech Marín Burgin, Antonia Szczupak, Lidia Leech Mechanosensory Non-spiking Sensory processing Strychnine poison strychnine action potential animal article cytology drug effect electrophysiology ganglion interneuron leech mechanoreceptor movement (physiology) physiology sensory nerve cell synapse Action Potentials Animals Electrophysiology Ganglia, Invertebrate Interneurons Leeches Mechanoreceptors Movement Neurons, Afferent Poisons Strychnine Synapses The non-spiking neurons 151 are present as bilateral pairs in each midbody ganglion of the leech nervous system and they are electrically coupled to several motorneurons. Intracellular recordings were used to investigate how these neurons process input from the mechanosensory P neurons in isolated ganglia. Induction of spike trains (15 Hz) in single P cells evoked responses that combined depolarizing and hyperpolarizing phases in cells 151. The phasic depolarizations, transmitted through spiking interneurons, reversed at around -20 mV. The hyperpolarization had two components, both reversing at around -65 mV, and which were inhibited by strychnine (10 μmol l-1). The faster component was transmitted through spiking interneurons and the slower component through a direct P-151 interaction. Short trains (< 400 ms) of P cell spikes (15 Hz) evoked the phasic depolarizations superimposed on the hyperpolarization, while long spike trains (> 500 ms) produced a succession of depolarizations that masked the hyperpolarizing phase. The amplitude and duration of the hyperpolarization reached their maximum at the initial spikes in a train, while the depolarizations persisted throughout the duration of the stimulus train. Both phases of the response were relatively unaffected by the spike frequency (5-25 Hz). The non-spiking neurons 151 processed the sensory signals in the temporal rather than in the amplitude domain. Fil:Marín-Burgin, A. 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. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v186_n10_p989_MarinBurgin http://hdl.handle.net/20.500.12110/paper_03407594_v186_n10_p989_MarinBurgin
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Leech Mechanosensory Non-spiking Sensory processing Strychnine poison strychnine action potential animal article cytology drug effect electrophysiology ganglion interneuron leech mechanoreceptor movement (physiology) physiology sensory nerve cell synapse Action Potentials Animals Electrophysiology Ganglia, Invertebrate Interneurons Leeches Mechanoreceptors Movement Neurons, Afferent Poisons Strychnine Synapses
spellingShingle	Leech Mechanosensory Non-spiking Sensory processing Strychnine poison strychnine action potential animal article cytology drug effect electrophysiology ganglion interneuron leech mechanoreceptor movement (physiology) physiology sensory nerve cell synapse Action Potentials Animals Electrophysiology Ganglia, Invertebrate Interneurons Leeches Mechanoreceptors Movement Neurons, Afferent Poisons Strychnine Synapses Marín Burgin, Antonia Szczupak, Lidia Processing of sensory signals by a non-spiking neuron in the leech
topic_facet	Leech Mechanosensory Non-spiking Sensory processing Strychnine poison strychnine action potential animal article cytology drug effect electrophysiology ganglion interneuron leech mechanoreceptor movement (physiology) physiology sensory nerve cell synapse Action Potentials Animals Electrophysiology Ganglia, Invertebrate Interneurons Leeches Mechanoreceptors Movement Neurons, Afferent Poisons Strychnine Synapses
description	The non-spiking neurons 151 are present as bilateral pairs in each midbody ganglion of the leech nervous system and they are electrically coupled to several motorneurons. Intracellular recordings were used to investigate how these neurons process input from the mechanosensory P neurons in isolated ganglia. Induction of spike trains (15 Hz) in single P cells evoked responses that combined depolarizing and hyperpolarizing phases in cells 151. The phasic depolarizations, transmitted through spiking interneurons, reversed at around -20 mV. The hyperpolarization had two components, both reversing at around -65 mV, and which were inhibited by strychnine (10 μmol l-1). The faster component was transmitted through spiking interneurons and the slower component through a direct P-151 interaction. Short trains (< 400 ms) of P cell spikes (15 Hz) evoked the phasic depolarizations superimposed on the hyperpolarization, while long spike trains (> 500 ms) produced a succession of depolarizations that masked the hyperpolarizing phase. The amplitude and duration of the hyperpolarization reached their maximum at the initial spikes in a train, while the depolarizations persisted throughout the duration of the stimulus train. Both phases of the response were relatively unaffected by the spike frequency (5-25 Hz). The non-spiking neurons 151 processed the sensory signals in the temporal rather than in the amplitude domain.
author	Marín Burgin, Antonia Szczupak, Lidia
author_facet	Marín Burgin, Antonia Szczupak, Lidia
author_sort	Marín Burgin, Antonia
title	Processing of sensory signals by a non-spiking neuron in the leech
title_short	Processing of sensory signals by a non-spiking neuron in the leech
title_full	Processing of sensory signals by a non-spiking neuron in the leech
title_fullStr	Processing of sensory signals by a non-spiking neuron in the leech
title_full_unstemmed	Processing of sensory signals by a non-spiking neuron in the leech
title_sort	processing of sensory signals by a non-spiking neuron in the leech
publishDate	2000
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v186_n10_p989_MarinBurgin http://hdl.handle.net/20.500.12110/paper_03407594_v186_n10_p989_MarinBurgin
work_keys_str_mv	AT marinburginantonia processingofsensorysignalsbyanonspikingneuronintheleech AT szczupaklidia processingofsensorysignalsbyanonspikingneuronintheleech
_version_	1768542038523904000

Processing of sensory signals by a non-spiking neuron in the leech

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