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Neuromodulatory Circuits and Motivated Behavior

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Air date: Monday, September 9, 2013, 3:00:00 PM
Time displayed is Eastern Time, Washington DC Local
Views: Total views: 423, (148 Live, 275 On-demand)
Category: WALS - Wednesday Afternoon Lectures
Runtime: 01:03:28
Description: Wednesday Afternoon Lecture Series

Special Monday lecture

Genetic variation, internal states, and environmental cues converge on shared neuronal circuits to regulate behaviors. In the nematode worm Caenorhabditis elegans, an anatomical wiring diagram provides an essential map for innate behaviors, such as preferences for specific stimuli. Superimposed on this detailed circuit diagram are neuromodulators reflecting internal states, which help select appropriate behavioral responses from a larger number of latent circuits, and lead to both rapid and long-lasting changes in behavior. Dr. Bargmann will discuss a neuromodulatory circuit that generates long-lasting behavioral states through two conserved neuromodulators, serotonin and a neuropeptide. The neurons that produce and respond to each neuromodulator form a distributed circuit orthogonal to the classical wiring diagram. The temporal dynamics of this neuromodulatory circuit supplement fast motor circuits to initiate and maintain long-lasting behavioral states.

For more information go to http://wals.od.nih.gov
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NLM Title: Neuromodulatory circuits and motivated behavior / Dr. Cori Bargmann.
Author: Bargmann, Cornelia I.
National Institutes of Health (U.S.),
Publisher:
Abstract: (CIT): Genetic variation, internal states, and environmental cues converge on shared neuronal circuits to regulate behaviors. In the nematode worm Caenorhabditis elegans, an anatomical wiring diagram provides an essential map for innate behaviors, such as preferences for specific stimuli. Superimposed on this detailed circuit diagram are neuromodulators reflecting internal states, which help select appropriate behavioral responses from a larger number of latent circuits, and lead to both rapid and long-lasting changes in behavior. Dr. Bargmann will discuss a neuromodulatory circuit that generates long-lasting behavioral states through two conserved neuromodulators, serotonin and a neuropeptide. The neurons that produce and respond to each neuromodulator form a distributed circuit orthogonal to the classical wiring diagram. The temporal dynamics of this neuromodulatory circuit supplement fast motor circuits to initiate and maintain long-lasting behavioral states.
Subjects: Behavior, Animal--drug effects
Motivation--drug effects
Nematoda
Neurons--physiology
Neuropeptides
Neurotransmitter Agents
Publication Types: Lecture
Webcast
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Caption Text: Download Caption File
NLM Classification: WL 102.5
NLM ID: 101618062
CIT Live ID: 13153
Permanent link: https://videocast.nih.gov/watch=13153