| This reduction reflected the shunting and reduced amplitude of the antidromic action potential by the inhibition. |
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| In neurons, calcium entry through voltage-gated channels tightly couples an action potential with transmitter release. |
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| After an action potential has swept along a single nerve fibre, a second nerve impulse cannot be initiated immediately. |
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| The whole sequence of events, from the inrush of calcium to the initiation of the action potential, takes place in less than two milliseconds. |
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| In reduced preparations, subthreshold stimuli increased action potential activity in identified serotonergic neurons. |
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| However, in parapodial motoneurons, the action potential is initiated at or near the soma and travels to the axon terminal. |
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| Heart cells, like other electrically excitable cells, become inexcitable for a brief period after each action potential. |
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| The latter is known to be due to the fact that hypocalcemia prolongs the duration of phase two of the action potential of cardiac muscle. |
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| Prolongs action potential duration and effective refractory period in atria, Purkinje fibres and ventricular muscle. |
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| However, at this point in time robust registration of fast and small changes in the corpus cavernosum smooth muscle action potential is not possible. |
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| The effect of oxaliplatin on action potential could be antagonized by the anti-epileptic drug carbamazepine. |
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| Ventricular repolarization, determined by the duration of the cardiac action potential, is a complex physiological process. |
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| In the crayfish leg extensor preparation, the number of quanta released per action potential was approximately 15, at low frequencies of stimulation. |
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| We propose to record every action potential from every neuron Here's where the problems start. |
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| Rheobase, action potential threshold, was the minimal injected current to evoke an action potential. |
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| The action potential halfwidth was measured from the first action potential triggered by current injection. |
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| The threshold potential of the nerve fibre is mainly unchanged and there is a decrease in rate of rise of the action potential. |
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| Studies of action potential parameters provide information on the integrated activity of multiple ion channels in the heart. |
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| But a single synapse firing briefly is generally not enough to make the neuron fire an impulse, technically termed an action potential, of its own. |
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| As a nerve impulse, or action potential, reaches the end of a presynaptic axon, molecules of neurotransmitter are released into the synaptic space. |
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| During transduction, potassium floods into the hair cell, depolarising the cell and triggering an action potential in the associated cochlear neurones. |
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| Each neuron connects with other neurons or target cells at synapses, sites at which the propagation of an action potential induces neurotransmitter release. |
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| The all-or-none response of the action potential helped to identify the limit for a supra-threshold stimulus, by gradually increasing the amplitude of the pulse. |
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| Like those of other animals, most arthropod muscles require an action potential to initiate each contraction. |
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| It is the influx of sodium into the cell that is responsible for generating an action potential, which causes depolarization and conduction of the nerve impulse. |
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| As the action potential passes, special proteinaceous gates open in the cell's membrane. |
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| This produces the rising phase, or upshoot, of the action potential, and means that the membrane potential becomes positive for a short time. |
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| Rufinamide exhibits its anticonvulsant effects through limiting neuronal sodium-dependent action potential firing. |
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| Direct diffusion of ions through these junctions allows the action potential to be transmitted with little or no delay or distortion, in effect synchronizing the response of an entire group of neurons. |
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| Where this action potential normally rapidly returns to the original resting potential, repetitive electrochemical action potential is aroused by the andullation. |
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| After repolarization there is a period during which a second action potential cannot be initiated, no matter how large a stimulus current is applied to the neuron. |
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| The cycle of depolarization and repolarization in the heart is known as the cardiac action potential and occurs approximately 60 times every minute. |
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| Species differences in terms of which cardiac ion channels contribute to cardiac repolarization and to the duration of the action potential should be considered in selecting a test system. |
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| The nerve impulse that ultimately results in muscle contraction appears as an action potential at the sarcolemma, the membrane that surrounds the muscle fibre. |
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| Recordings from squid synapses and neuromuscular junctions of the frog reveal a delay of 0.5 to 4.0 milliseconds between the onset of action potential at the nerve terminal and action potential at the postsynaptic site. |
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| Patients were categorized according to the cochlear microphonics threshold and according to the compound action potential threshold. |
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| This stimulation elicits action potential discharges that propagate along the nerve fiber, eventually reaching auditory centers in the brainstem. |
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| An action potential can be propagated only if sufficient current travels down the cell to depolarize the adjacent membrane below the threshold in membrane potential. |
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| With whole-cell patch-clamp recordings, we also showed that CRF increased action potential firing frequency by generating membrane depolarization. |
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| However, authors detected a significantly decreased sensory conduction velocity and action potential amplitude in median, ulnar, and sural nerves. |
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| Action potential generation in inhibitory interneurons is critical for cortical excitation-inhibition balance. |
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