Artículo
Marín-Burgin, A.; Szczupak, L. "Processing of sensory signals by a non-spiking neuron in the leech" (2000) Journal of Comparative Physiology - A Sensory, Neural, and Behavioral Physiology. 186(10):989-997
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Abstract:
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.
Registro:
| Documento: | Artículo |
| Título: | Processing of sensory signals by a non-spiking neuron in the leech |
| Autor: | Marín-Burgin, A.; Szczupak, L. |
| Filiación: | Laboratorio de Fisiologia y Biologia Molecular, Departamento de Biologia, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires 1428, Argentina Physiologisches Institut, Rontgenring 9, 97070 Wurzburg, Germany |
| Palabras clave: | 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 |
| Año: | 2000 |
| Volumen: | 186 |
| Número: | 10 |
| Página de inicio: | 989 |
| Página de fin: | 997 |
| DOI: | http://dx.doi.org/10.1007/s003590000152 |
| Título revista: | Journal of Comparative Physiology - A Sensory, Neural, and Behavioral Physiology |
| Título revista abreviado: | J. Comp. Physiol. A Sens. Neural. Behav. Physiol. |
| ISSN: | 03407594 |
| CODEN: | JCPAD |
| CAS: | Poisons; Strychnine, 57-24-9 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v186_n10_p989_MarinBurgin |
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Citas:
---------- APA ----------
Marín-Burgin, A. & Szczupak, L. (2000) . Processing of sensory signals by a non-spiking neuron in the leech. Journal of Comparative Physiology - A Sensory, Neural, and Behavioral Physiology, 186(10), 989-997.http://dx.doi.org/10.1007/s003590000152
---------- CHICAGO ----------
Marín-Burgin, A., Szczupak, L. "Processing of sensory signals by a non-spiking neuron in the leech" . Journal of Comparative Physiology - A Sensory, Neural, and Behavioral Physiology 186, no. 10 (2000) : 989-997.http://dx.doi.org/10.1007/s003590000152
---------- MLA ----------
Marín-Burgin, A., Szczupak, L. "Processing of sensory signals by a non-spiking neuron in the leech" . Journal of Comparative Physiology - A Sensory, Neural, and Behavioral Physiology, vol. 186, no. 10, 2000, pp. 989-997.http://dx.doi.org/10.1007/s003590000152
---------- VANCOUVER ----------
Marín-Burgin, A., Szczupak, L. Processing of sensory signals by a non-spiking neuron in the leech. J. Comp. Physiol. A Sens. Neural. Behav. Physiol. 2000;186(10):989-997.http://dx.doi.org/10.1007/s003590000152
