Postnatal changes in the repetitive firing properties of rat jaw-closing motoneurons
نویسندگان
چکیده
منابع مشابه
Serotonergic modulation of the hyperpolarizing spike afterpotential in rat jaw-closing motoneurons by PKA and PKC.
Intracellular recordings were obtained from rat jaw-closing motoneurons (JCMNs) in slice preparations to investigate the effects of serotonin (5-HT) on the postspike medium-duration afterhyperpolarization (mAHP) and an involvement of protein kinases in the effects. Application of 50 microM 5-HT caused membrane depolarization and increased input resistance in the most cells without affecting the...
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Most mammals are born with the necessary spinal circuitry to produce a locomotor-like pattern of neural activity. However, rodents seldom demonstrate weight-supported locomotor behavior until the second or third postnatal week, possibly due to the inability of the neuromuscular system to produce sufficient force during this early postnatal period. As spinal motoneurons mature they are seen to f...
متن کاملSynaptic transmission from the supratrigeminal region to jaw-closing and jaw-opening motoneurons in developing rats.
The supratrigeminal region (SupV) receives abundant orofacial sensory inputs and descending inputs from the cortical masticatory area and contains premotor neurons that target the trigeminal motor nucleus (MoV). Thus it is possible that the SupV is involved in controlling jaw muscle activity via sensory inputs during mastication. We used voltage-sensitive dye, laser photostimulation, patch-clam...
متن کاملChanges during the postnatal development in physiological and anatomical characteristics of rat motoneurons studied in vitro.
The postnatal maturation of rat brainstem (oculomotor and hypoglossal nuclei) and spinal motoneurons, based on data collected from in vitro studies, is reviewed here. Membrane input resistance diminishes with age, but to a greater extent for hypoglossal than for oculomotor motoneurons. The time constant of the membrane diminishes with age in a similar fashion for both oculomotor and hypoglossal...
متن کاملMembrane properties related to the firing behavior of zebrafish motoneurons.
The physiological and pharmacological properties of the motoneuron membrane and action potential were investigated in larval zebrafish using whole cell patch current-clamp recording techniques. Action potentials were eliminated in tetrodotoxin, repolarized by tetraethylammonium (TEA) and 3,4-diaminopyridine (3,4-AP)-sensitive potassium conductances, and had a cobalt-sensitive, high-threshold ca...
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ژورنال
عنوان ژورنال: The Journal of Japanese Society of Stomatognathic Function
سال: 2013
ISSN: 1340-9085,1883-986X
DOI: 10.7144/sgf.19.137