Lateral giant fibers of cray fish: location of somata by dye injection.
Using a new technique for injecting fluorescent dye, we have analyzed the intraganglionic architectutre of the lateral giant interneuron in crayfish. Each lateral giant interneuron comprises a giant axon, an ipsilateral dendritic arborization of fairly constant form, and a contralateral soma. Antidromic axon spikes produce only, small, electronic potentials in the soma; direct depolarization there fails to produce electrically excitable membrane responses and cannot discharge the main axon.
D000200:Action Potentials; D000818:Animals; D003445:Crustacea / Q000033:anatomy & histology*; D005456:Fluorescent Dyes; D005724:Ganglia / Q000033:anatomy & histology*; D007395:Interneurons / Q000033:anatomy & histology*; D008722:Methods; D008856:Microscopy, Fluorescence; D009046:Motor Neurons / Q000502:physiology; D013194:Staining and Labeling
D005456:Fluorescent Dyes