Electrophysiological studies of the gill ganglion in Aplysia californica

1. An electrophysiological analysis was made of gill ganglion neurons in Aplysia californica. 2. Gill ganglion neurons behave similarly to neurons in the abdominal ganglion (the central nervous systems; CNS) that are involved with gill withdrawal behaviors. 3. Some gill ganglion neurons are motor ne...

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Bibliographic Details
Published in:Cellular and molecular neurobiology 1991-06, Vol.11 (3), p.305-320
Main Authors: COLEBROOK, E, BULLOCH, A, LUKOWIAK, K
Format: Article
Language:English
Subjects:
Animals
Antibodies, Monoclonal
Aplysia
Biochemistry. Physiology. Immunology
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Ganglia - chemistry
Ganglia - physiology
Ganglia - ultrastructure
Gills - innervation
Gills - physiology
Invertebrates
Isoquinolines
Mollusca
Motor Neurons - physiology
Movement
Neurons - physiology
Physiology. Development
Reflex
Serotonin - analysis
Serotonin - pharmacology
Staining and Labeling
Synapses - physiology
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Summary:1. An electrophysiological analysis was made of gill ganglion neurons in Aplysia californica. 2. Gill ganglion neurons behave similarly to neurons in the abdominal ganglion (the central nervous systems; CNS) that are involved with gill withdrawal behaviors. 3. Some gill ganglion neurons are motor neurons much like those in the CNS. 4. Neurons in the gill ganglion are electronically and dye-coupled. In addition, they receive common chemical synaptic inputs from the Int-II network in the CNS. 5. Tactile stimulation of the gill or siphon evokes synaptic activity in gill ganglion neurons whether or not the CNS is present. 6. Pedal nerve stimulation results in synaptic activity in gill ganglion neurons and facilitates synaptic input evoked by tactile stimulation of the gill or siphon. 7. Antibody staining reveals serotonin-like fibers in the branchial nerve close to the gill ganglion but no cell bodies in the ganglion. 8. The gill ganglion may play a role in the mediation of adaptive gill reflex behaviors. It may be one of the loci where the CNS and peripheral nervous system (PNS) interact and form an integrated circuit to mediate gill withdrawal reflex (GWR) behaviors.
ISSN:0272-4340
1573-6830
DOI:10.1007/BF00713275