Identification of efferent-stimulus-responding neurons in the earthwoem 3rd segmental nerve by Lucifer yellow-ch backfilling

ABSTRACT

The objective of the present study was to identifify the mechanism for the decreased efferent reflex response recorded extracellulary from an earthworm 3rd segmental nerve after the nerve had been cut. Four neurons which showed a correlated decrease in their efferent responses were identified in the ventral nerve cord by the broken-microelectrode-backfilling method using Lucifer Yellow-CH. The long processes of these neurons extended into the 3 rd nerve trunk.Thus teses neurons may neurons mayrepresent an efferent link in the this complicated reflex are