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Recording from Snail Motor Nerves to Investigate Central Pattern Generation.

Robert A Wyttenbach¹, Bruce R Johnson²

¹Neuroscience and Behavioral Biology, Emory University, Atlanta, GA 30322.

Journal of Undergraduate Neuroscience Education : JUNE : a Publication of FUN, Faculty for Undergraduate Neuroscience

|July 22, 2024

Summary

This summary is machine-generated.

Pond snail feeding behavior demonstrates central pattern generation in neurons. This study quantizes motor activity, showing responses to stimulants and neuromodulators like serotonin and dopamine.

Keywords:

CPG Helisoma Lymnaea Planorbis buccal dopamine extracellular feeding neuromodulation pond snail serotonin

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Area of Science:

Neuroscience
Animal Behavior

Background:

Pond snail feeding is a model for central pattern generation (CPG).
CPG involves neural circuits in the buccal ganglia controlling feeding movements.
Understanding CPG modulation is key to comprehending rhythmic behaviors.

Purpose of the Study:

To provide students with hands-on experience in observing and quantifying feeding behavior in pond snails.
To investigate the effects of feeding stimulants and neuromodulators on the rhythmic motor activity of snail feeding.
To facilitate discussion on neural circuitry and intrinsic neuronal properties underlying rhythmic activities.

Main Methods:

Dissection of pond snail nervous system and feeding apparatus.
Recording of neural activity from relevant nerves.
Experimental application of feeding stimulants, serotonin, and dopamine.
Quantification of rhythmic motor activity, including cyclic measurements and spike-rate analysis.

Main Results:

Successful observation and recording of pond snail feeding behavior.
Demonstration of altered rhythmic motor activity in response to feeding stimulants.
Quantifiable changes in neural activity upon administration of serotonin and dopamine.
Data suitable for qualitative or quantitative analysis based on course objectives.

Conclusions:

The pond snail feeding system effectively demonstrates CPG principles.
Neuromodulators like serotonin and dopamine significantly influence feeding motor patterns.
This exercise enhances understanding of neural control of rhythmic behaviors like feeding, locomotion, and respiration.