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Plos Biology : Monoaminergic Orchestration of Motor Programs in a Complex C. Elegans Behavior, Volume 11

By Maricq, Andres V.

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Book Id: WPLBN0003922662
Format Type: PDF eBook :
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Reproduction Date: 2015

Title: Plos Biology : Monoaminergic Orchestration of Motor Programs in a Complex C. Elegans Behavior, Volume 11  
Author: Maricq, Andres V.
Volume: Volume 11
Language: English
Subject: Journals, Science, Biology
Collections: Periodicals: Journal and Magazine Collection (Contemporary), PLoS Biology
Historic
Publication Date:
Publisher: Plos

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Maricq, A. V. (n.d.). Plos Biology : Monoaminergic Orchestration of Motor Programs in a Complex C. Elegans Behavior, Volume 11. Retrieved from http://ebook2.worldlibrary.net/


Description
Description : Monoamines provide chemical codes of behavioral states. However, the neural mechanisms of monoaminergic orchestration of behavior are poorly understood. Touch elicits an escape response in Caenorhabditis elegans where the animal moves backward and turns to change its direction of locomotion. We show that the tyramine receptor SER-2 acts through a Gao pathway to inhibit neurotransmitter release from GABAergic motor neurons that synapse onto ventral body wall muscles. Extrasynaptic activation of SER-2 facilitates ventral body wall muscle contraction, contributing to the tight ventral turn that allows the animal to navigate away from a threatening stimulus. Tyramine temporally coordinates the different phases of the escape response through the synaptic activation of the fast-acting ionotropic receptor, LGC-55, and extrasynaptic activation of the slow-acting metabotropic receptor, SER-2. Our studies show, at the level of single cells, how a sensory input recruits the action of a monoamine to change neural circuit properties and orchestrate a compound motor sequence.


 

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