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Iscla, I.; Arini, P.D.; Szczupak, L. "Differential channeling of sensory stimuli onto a motor neuron in the leech" (1999) Journal of Comparative Physiology - A Sensory, Neural, and Behavioral Physiology. 184(2):233-241
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Abstract:

We studied a specific sensory-motor pathway in the isolated leech ganglia. Pressure-sensitive mechanosensory neurons were stimulated with trains of action potentials at 5-20 Hz while recording the responses of the annulus erector motorneurons that control annuli erection. The response of the annulus erector neurons was a succession of excitatory postsynaptic potentials followed by inhibitory postsynaptic potentials. The excitatory postsynaptic potentials had a brief time-course while the inhibitory postsynaptic potentials had a prolonged time-course that enabled their temporal summation. Thus, the net effect of pressure-sensitive neuron stimulation on the annulus erector neurons was inhibitory. Both phases of the response were mediated by chemical transmission; the excitatory postsynaptic potentials were transmitted via a monosynaptic pathway, and the inhibitory postsynaptic potentials via a polysynaptic one. The pattern of expression of this dual response depended on the field of innervation of the sensory neuron and it was under the influence of cell 151, a non-spiking interneuron, that could regulate the expression of the hyperpolarization. The interaction between pressure-sensitive neurons and annulus erector neuron reveals how sensory specificity, connectivity pattern and regulatory elements interplay in a specific sensory-motor network.

Registro:

Documento: Artículo
Título:Differential channeling of sensory stimuli onto a motor neuron in the leech
Autor:Iscla, I.; Arini, P.D.; Szczupak, L.
Filiación:Dto. de Fisiología, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155 piso 7-1121 Cap. Fed., Argentina
CC 4992, 1000 Capital Federal, Argentina
Lab. de Fisiol. y Biol. Molecular, Dto. de Biología, Pabellón II, 1428 Capital Federal, Argentina
Idioma: Inglés
Palabras clave:Electric junction; Leech; Non-spiking interneuron; Sensory integration; Sensory-motor; animal; article; calcium signaling; cell membrane potential; cytology; electrophysiology; electrostimulation; excitatory postsynaptic potential; ganglion; in vitro study; leech; metabolism; motoneuron; nerve tract; patch clamp; physiology; pressure; sensory nerve cell; stimulation; Animals; Calcium Signaling; Electric Stimulation; Electrophysiology; Excitatory Postsynaptic Potentials; Ganglia, Invertebrate; Leeches; Membrane Potentials; Motor Neurons; Neural Pathways; Neurons, Afferent; Patch-Clamp Techniques; Physical Stimulation; Pressure; Animalia; Hirudinida; Invertebrata
Año:1999
Volumen:184
Número:2
Página de inicio:233
Página de fin:241
DOI: http://dx.doi.org/10.1007/s003590050321
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
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v184_n2_p233_Iscla

Referencias:

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Citas:

---------- APA ----------
Iscla, I., Arini, P.D. & Szczupak, L. (1999) . Differential channeling of sensory stimuli onto a motor neuron in the leech. Journal of Comparative Physiology - A Sensory, Neural, and Behavioral Physiology, 184(2), 233-241.
http://dx.doi.org/10.1007/s003590050321
---------- CHICAGO ----------
Iscla, I., Arini, P.D., Szczupak, L. "Differential channeling of sensory stimuli onto a motor neuron in the leech" . Journal of Comparative Physiology - A Sensory, Neural, and Behavioral Physiology 184, no. 2 (1999) : 233-241.
http://dx.doi.org/10.1007/s003590050321
---------- MLA ----------
Iscla, I., Arini, P.D., Szczupak, L. "Differential channeling of sensory stimuli onto a motor neuron in the leech" . Journal of Comparative Physiology - A Sensory, Neural, and Behavioral Physiology, vol. 184, no. 2, 1999, pp. 233-241.
http://dx.doi.org/10.1007/s003590050321
---------- VANCOUVER ----------
Iscla, I., Arini, P.D., Szczupak, L. Differential channeling of sensory stimuli onto a motor neuron in the leech. J. Comp. Physiol. A Sens. Neural. Behav. Physiol. 1999;184(2):233-241.
http://dx.doi.org/10.1007/s003590050321