Axonless horizontal cells were enzymatically dissociated from the retinae of adult rabbits. Whole-cell patch-clamp recordings were made on dissociated cells and voltage- and ligand-induced currents were studied. When membrane potential was measured in the current-clamp configuration, current pulses ...
A model is proposed for generation and propagation of the action potential in axon membranes based on the concept of a ferroelectric first-order phase transition. The model modifies Leuchtag's hypothesis of the ferroelectric origin of the gating mechanism in sodium ion channels in order to use ...
Described are studies of propagation of action potentials through inhomogenous axon regions through experiments performed on squid giant axons and by computer simulations. The initial speed of propagation of the action potential is dependent upon the stimulus waveform. For a rectangular pulse of current...
Muscle contraction starts with a neural signal, an action potential arriving along a long neural fiber (the axon) from a neuron in the spinal cord (or in the brainstem, for neck and facial muscles), called an alpha-motoneuron, to a target muscle fiber (Figure 3.2A). When an actio...
The action potential of the squid giant axon is formed by just two voltage-dependent conductances in the cell membrane, yet mammalian central neurons typically express more than a dozen different types of voltage-dependent ion channels. This rich repertoire of channels allows neurons to encode infor...
Synaptic vesicles fuse with the presynaptic membrane upon the arrival of an action potential at the presynaptic axon terminal. 突触前轴突末端动作电位到来之际,突触泡同突触前膜相融合。 权威例句 A dynamic model of the cardiac ventricular action potential. I. Simulations of ionic currents and concentrat...
An action potential is generated in the body of the neuron and propagated through its axon. Propagation doesn’t decrease or affect the quality of the action potential in any way, so that the target tissue gets the same impulse no matter how far they are from neuronal body. The action pote...
The AIS is the location for action potential (AP) initiation.A neuron was simulated as three sections, each containing multiple compartments: the soma, the initial segment andLouisDepartmentJacquesDepartmentCatherineDepartmentEDepartmentMorrisDepartment...
Actionpotential•Definition:an“all-or-none”changeinvoltagethatpropagatesitselfdowntheaxonActionpotential•Definition:an“all-or-none”changeinvoltagethatpropagatesitselfdowntheaxon•NaturallyoccurringactionpotentialsbeginattheaxonhillockActionpotential•Definition:an“all-or-none”changeinvoltagethatpropagate...
Video: Thermoreceptors in the Body | Definition, Function & Location Video: Axon Definition, Types & Function Video: Refractory Period | Definition & Significance Video: Nervous Tissue | Function, Types & Parts Video: Action Potential | Graph, Diagram & Depolarization Video: Reflex Arc |...