Artículo

Perez-Etchegoyen, C.B.; Alvarez, R.J.; Rodriguez, M.J.; Szczupak, L. "The activity of leech motoneurons during motor patterns is regulated by intrinsic properties and synaptic inputs" (2012) Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology. 198(3):239-251
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Abstract:

The activity of motoneurons during motor patterns depends on their intrinsic properties and on synaptic inputs. This study analyzed the properties of two leech motoneurons: the excitors of dorsal longitudinal muscles (DE-3) and of dorsal and ventral longitudinal muscles (MN-L) in basal conditions (normal and high Mg 2+ saline) and during crawling. The voltage-current relationships in DE-3 and MN-L were similar. The curves exhibited the largest slope around resting potential, showed marked inward and outward rectification, and were not affected by high Mg 2+. In response to 5-s pulses, DE-3 exhibited a fast initial adaptation, a slow recovery and a very slow late adaptation. High Mg 2+ abolished the initial high frequency. The frequency-voltage relationship for the rest of the response was highly similar in normal and in high Mg 2+ saline. MN-L exhibited a minor initial adaptation and then fired steadily. High Mg 2+ diminished the frequency-voltage relationship. During crawling DE-3 and MN-L fired in phase and their frequency-voltage curves overlapped with the lower end of the curves obtained in basal conditions. The results suggest that the activity of these motoneurons during crawling was regulated, to a large extent, by synaptic inputs. © 2011 Springer-Verlag.

Registro:

Documento: Artículo
Título:The activity of leech motoneurons during motor patterns is regulated by intrinsic properties and synaptic inputs
Autor:Perez-Etchegoyen, C.B.; Alvarez, R.J.; Rodriguez, M.J.; Szczupak, L.
Filiación:Departamento de Fisiología y Biología Molecular, FCEN-UBA, IFIBYNE UBA-CONICET, Buenos Aires, Argentina
Palabras clave:Crawling; Excitability; Leech motoneuron; Motor control; Spike frequency adaptation; animal; article; cell membrane potential; leech; motoneuron; motor activity; physiology; synapse; synaptic transmission; Animals; Leeches; Membrane Potentials; Motor Activity; Motor Neurons; Synapses; Synaptic Transmission
Año:2012
Volumen:198
Número:3
Página de inicio:239
Página de fin:251
DOI: http://dx.doi.org/10.1007/s00359-011-0704-z
Título revista:Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology
Título revista abreviado:J. Comp. Physiol. A Neuroethol. Sens. Neural. Behav. Physiol.
ISSN:03407594
CODEN:JCPAD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03407594_v198_n3_p239_PerezEtchegoyen

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Citas:

---------- APA ----------
Perez-Etchegoyen, C.B., Alvarez, R.J., Rodriguez, M.J. & Szczupak, L. (2012) . The activity of leech motoneurons during motor patterns is regulated by intrinsic properties and synaptic inputs. Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology, 198(3), 239-251.
http://dx.doi.org/10.1007/s00359-011-0704-z
---------- CHICAGO ----------
Perez-Etchegoyen, C.B., Alvarez, R.J., Rodriguez, M.J., Szczupak, L. "The activity of leech motoneurons during motor patterns is regulated by intrinsic properties and synaptic inputs" . Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology 198, no. 3 (2012) : 239-251.
http://dx.doi.org/10.1007/s00359-011-0704-z
---------- MLA ----------
Perez-Etchegoyen, C.B., Alvarez, R.J., Rodriguez, M.J., Szczupak, L. "The activity of leech motoneurons during motor patterns is regulated by intrinsic properties and synaptic inputs" . Journal of Comparative Physiology A: Neuroethology, Sensory, Neural, and Behavioral Physiology, vol. 198, no. 3, 2012, pp. 239-251.
http://dx.doi.org/10.1007/s00359-011-0704-z
---------- VANCOUVER ----------
Perez-Etchegoyen, C.B., Alvarez, R.J., Rodriguez, M.J., Szczupak, L. The activity of leech motoneurons during motor patterns is regulated by intrinsic properties and synaptic inputs. J. Comp. Physiol. A Neuroethol. Sens. Neural. Behav. Physiol. 2012;198(3):239-251.
http://dx.doi.org/10.1007/s00359-011-0704-z