Bidirectional Propagation of Action Potential in Giant Axons of Nerve Bundles from Homarus Americanus
نویسندگان
چکیده
منابع مشابه
Fine structure and organization of nerve fibers and giant axons in Homarus americanus.
The walking leg nerves of lobster Homarus americanus have been utilized for many years in neurophysiological and pharmacological studies of the nervous system (for a review of the literature see references 1 and 10). These nerves have been particularly useful because they contain giant axons 75-100/z in diameter which can be isolated easily. The giant axons have been employed extensively in per...
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In this project we invectigated bidirectional propagation of action potentials in giant axon of lobster Homarus americanus. We found an asymetrical propagation in the giant axons from the first two walking legs, which have claws. The backpropagating antidromic action potential decreases the conduction velocity when we increase the stimulation voltage, while the forward propagating (orthodromic)...
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It was thought previously that cardiac muscle gap junctions provide low-resistance connections between cells and permit the local-circuit current to flow. Some evidences show that myocardial cells may not require low-resistance connections for successful propagation of the action potential (AP). It seems that some other types of mechanisms must be involved in AP propagation. In this article, we...
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It was thought previously that cardiac muscle gap junctions provide low-resistance connections between cells and permit the local-circuit current to flow. Some evidences show that myocardial cells may not require low-resistance connections for successful propagation of the action potential (AP). It seems that some other types of mechanisms must be involved in AP propagation. In this article, we...
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Axons have traditionally been viewed as highly faithful transmitters of action potentials. Recently, however, experimental evidence has accumulated to support the idea that under some circumstances axonal propagation may fail. Cerebellar Purkinje neurons fire highfrequency simple spikes, as well as bursts of spikes in response to climbing fiber activation (the "complex spike"). Here we have vis...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 2015
ISSN: 0006-3495
DOI: 10.1016/j.bpj.2014.11.840