Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Functional Connections Are Established between Giant Nerve Fibers in Grafted Earthworms.
Author Vining, E. P. ; Drewes, C. D. ;
CORP Author Iowa State Univ., Ames.;Corvallis Environmental Research Lab., OR.
Year Published 1985
Report Number EPA/600/J-85/059;
Stock Number PB85-219780
Additional Subjects Nervous system ; Worms ; Electrophysiology ; Histology ; Reprints ; Eisenia foetida ; Connections
Library Call Number Additional Info Location Last
NTIS  PB85-219780 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 7p
Giant fiber interconnections were examined in successful grafts between two posterior portions of earthworms (Eisenia foetida). Electrophysiological and histological results indicated that cell-specific interanimal connections were formed between the medial giant fibers (MGF) in these preparations. Similar interconnections were formed between the paired lateral giant fibers (LGF), except that these involved the apposed left and right LGFs. Establishment of reliable and biodirectional conduction of LGF and MGF spikes across the graft occurred 2-4 days and 7-14 days after grafting, respectively. Subsequently, conduction across the graft remained effective for at least 6 weeks. The results are consistent with a hypothesis that grafted giant fibers are joined by a direct electrical connection, involving either fusion or an electrical synapse.