Comment on "Penetration of Action Potentials During Collision in the Median and Lateral Giant Axons of Invertebrates"
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- Comment on “Penetration of Action Potentials During Collision in the Median and Lateral Giant Axons of Invertebrates”
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The action potential (AP) is an electrical impulse elicited by depolarization of the neuronal membrane from the resting membrane potential (around − 70 mV). It propagates along the axon, allowing for rapid and distant communication. Recently, it was claimed that two APs traveling in opposite direction will pass unhindered through each other (penetrate) upon collision [Gonzalez-Perez et al.Phys. Rev. X 4, 031047 (2014)]. We tested this claim under carefully controlled conditions and found that we cannot reproduce penetration. Instead, APs consistently annihilated upon collision. This is consistent with a vast body of literature.
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