Properties of descending dorsal unpaired median (DUM) neurons of the locust suboesophageal ganglion.
A group of six dorsal unpaired median (DUM) neurons of the suboesophageal ganglion (SOG) of locusts was studied with neuroanatomical and electrophysiological techniques. The neurons are located posteriorly in the SOG and have axons that descend into the ganglia of the ventral nerve cord, some as far as the terminal abdominal ganglion. Within thoracic ganglia the neurons have profuse dendritic ramifications in many neuropiles, including ventral sensory neuropiles. Based on their projection patterns three different morphological types of neurons can be distinguished. These neurons receive excitatory inputs through sensory pathways that ascend from the thoracic ganglia and are activated by limb movements. They may be involved in the modulation of synaptic transmission in thoracic ganglia.
Institut Biologie II, RWTH Aachen, Kopernikusstr. 16, D-52074 Aachen, Germany. braeunig@bio2.rwth-aachen.de
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Bräunig
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Burrows
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Morris
D000818:Animals; D001369:Axons / Q000502:physiology; D003712:Dendrites / Q000378:metabolism; D004525:Efferent Pathways / Q000502:physiology; D004594:Electrophysiology; D004947:Esophagus / Q000294:innervation*; D005121:Extremities / Q000294:innervation; D005724:Ganglia / Q000378:metabolism; D006110:Grasshoppers; D007313:Insecta; D008465:Mechanoreceptors / Q000502:physiology; D008953:Models, Anatomic; D009046:Motor Neurons / Q000378:metabolism; D009474:Neurons / Q000378:metabolism* / Q000502:physiology*; D009655:Octopamine / Q000378:metabolism*; D013569:Synapses / Q000378:metabolism; D009435:Synaptic Transmission
D009655:Octopamine