PMID: 1457Apr 1, 1975

The transmission of impulses in the ectodermal slow conduction system of the sea anemone Calliactis parasitica (Couch)

The Journal of Experimental Biology
G A Shelton


1. The SS 1 fatigues in response to repetitive electrical stimulation. This fatigue is manifested by an increased conduction delay and a decreased SS 1 pulse amplitude. 2. Continued repetitive stimulation leads to the failure of the system. Recovery may take many seconds. Narrow strips of column fail more rapidly than wide strips. 3. The increased conduction delay is explained in terms of a decrease in the population of spiking cells. 4. A computer model is described and analysed. It suggests that conduction between electrically coupled ectoderm cells could be the basis for the SS1. The SS 1 may have properties not so far experimentally demonstrated; for example, under certain conditions it could behave as a local system.

Related Concepts

Computers, Digital
Electric Stimulation Technique
Electrophysiology (Science)
Synaptic Transmission
Sea Anemones

Related Feeds

Cardiac Conduction System

The cardiac conduction system is a specialized tract of myocardial cells responsible for maintaining normal cardiac rhythm. Discover the latest research on the cardiac conduction system here.