| In this case, spillover is limited to the postsynaptic sites under a single synaptic bouton, and occupancy is likely to vary across sites. |
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| When postsynaptic receptors are saturated, a quantum of synaptic current corresponds to the response evoked in a single synaptic bouton. |
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| When it is of the postsynaptic type, the local potential usually begins in the dendrites and spreads toward the soma and axon. |
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| The EEG registers brain waves, or more specifically, the cortical electrical activity that results from a summation of postsynaptic potential. |
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| In order to bring normal balance between excitatory and inhibitory postsynaptic potential, antiseizure drugs may use one or more of the following mechanisms. |
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| This quantal release of neurotransmitter has a critical influence on the electrical potential created in the postsynaptic membrane. |
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| This occurs at chemical synapses when neurotransmitters are released from the presynaptic neuron and produce excitation or inhibition of the postsynaptic cell. |
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| Venoms of the Elapidae snakes contain several postsynaptic polypeptide neurotoxins, such as bungarotoxin isolated from the venom of the banded krait. |
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| Most knowledge of postsynaptic neurotransmitter receptors comes from studies of the receptor on muscle cells. |
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| Glutamate is released presynaptically and binds to a postsynaptic receptor gating a cation-selective channel, thus depolarizing the post-synaptic cell. |
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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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| By preventing repolarization of the nerve ending, the postsynaptic ending becomes refractory and unexcitable, resulting in flaccid muscles. |
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| For this change to occur, the presynaptic and postsynaptic neurons must be activated during the release of dopamine. |
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| Thus initially neuroleptics may increase DA turnover and possibly even its action depending on the degree of postsynaptic block. |
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| Acetylcholine receptors are ion channels that span the postsynaptic membrane, and they have extracellular, intramembranous, and cytoplasmic portions. |
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| At the neuromuscular junction, brief depolarizations measuring no more than one millivolt can be observed in the postsynaptic muscle membrane, even when it is at rest. |
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| The released neurotransmitter binds to postsynaptic receptors, leading to a response in the postsynaptic neuron. |
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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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| Anatoxin-a is a potent postsynaptic, depolarizing, neuro-muscular blocking agent that causes death by respiratory arrest within minutes to a few hours depending on species, dosage and prior food consumption. |
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| Pre-and postsynaptic alterations in the septohippocampal cholinergic innervations after prenatal exposure to drugs. |
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| First, we demonstrate the presence of small postsynaptic vesicles and characterize their size and intrasynaptic localization. |
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| However, the increase in excitability as a mechanism of retention does not depend on the coactivity of presynaptic and postsynaptic neurons. |
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| The action of succinylcholine is to open sodium channels and depolarize the postsynaptic muscle membrane in the same manner as acetylcholine. |
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| They have been found on both pre-and postsynaptic cells, and are expressed in epithelium, connective and muscle tissues. |
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| Postsynaptic proteins receive the neurotransmitters released by presynaptic proteins. |
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| Postsynaptic activation in median eminence nerve endings shortly after superior cervical ganglionectomy was accompanied by a decrease in TSH release. |
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