Abstract:
:Rhythm generation by the gastric motor network in the stomatogastric ganglion (STG) of the lobster Homarus gammarus is controlled by modulatory projection neurons from rostral commissural ganglia (CoGs); blocking action potential conduction in these inputs to the STG of a stomatogastric nervous system in vitro rapidly renders the gastric network silent. However, exposure of the CoGs to low Ca2+ saline to block chemical synapses activates a spontaneously silent gastric network or enhances an ongoing gastric rhythm. A similar permissive effect was observed when picrotoxin was also superfused on these ganglia. We conclude that in the CoGs continuous synaptic inhibition is exerted on modulatory projection neuron(s) and that release from this inhibition allows strong activation of the gastric network.
journal_name
J Neurophysioljournal_title
Journal of neurophysiologyauthors
Faumont S,Simmers J,Meyrand Pdoi
10.1152/jn.1998.80.5.2776subject
Has Abstractpub_date
1998-11-01 00:00:00pages
2776-80issue
5eissn
0022-3077issn
1522-1598journal_volume
80pub_type
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