How To Use Quantal In A Sentence
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Furthermore, it allows one to calculate the apparent quantal size for each response in a sequence of stimuli.
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The correlation between changes in the kinetics of synaptic current and quantal amplitude remains strong for the corrected values as well.
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METHOD Bliss method ( QUANTAL procedure ) was used to calculate LD 50 and 95 % confident limit.
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With this low level of presynaptic stimulation, quantal currents could be resolved.
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An adequate interpretation of quantal parameters allowing for pre - and/or postsynaptic quantization is very important for the conclusions about the mechanisms of synaptic plasticity.
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Expression of tetanus toxin is known to reduce the frequency of spontaneous quantal release.
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The new, interdisciplinary subfield of quantum chaology studies semiclassical, but nonclassical phenomena in quantal systems whose classical counterparts exhibit the transition to chaotic dynamics.
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However the neighboring peaks can merge because of variability of quantal response.
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Ideally, this requires the identification of peaks in the histogram at a spacing of one quantal unit.
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Although these results do not definitively pinpoint the source of the steps, they confirm the earlier hypothesis that shortening is quantal.
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If the random number was smaller, a release event took place, the site was set to the empty state, and the size of the quantal response was determined as described below.
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The extrasynaptic receptors that are exposed to a much lower concentration of agonist and are not saturated may substantially enhance the quantal synaptic response.
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Quantal analysis of excitatory synapses in the hippocampus has proved difficult and has led to contradictory conclusions when applied to long-term potentiation.
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S, Lipp P, Berridge MJ, Bootman MD (1999) Regulation of ryanodine receptor opening by lumenal Ca (2+) underlies quantal Ca (2+) release in PC12 cells.
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The number of receptors opened following quantal release may vary directly with the total number of receptors at the synapse, but other, more complex, interactions may occur.
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The fact that similar step sizes are found in independent experimental approaches using different methodologies implies that the quantal stepping mechanism is a central feature of the contractile process.
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In this case, the quantal amplitude of postsynaptic response strongly depends on the number of accessible postsynaptic receptors in the vicinity of the release sites.
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In the crayfish leg extensor preparation, the number of quanta released per action potential (quantal content) was approximately 15, at low frequencies of stimulation.