Iterativus

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Iterativus

 

in biology, the capacity of certain tissues (for example, sympathetic-nerve plexuses and smooth muscles) to react to stimuli only when the stimuli follow one another with sufficient frequency. The explanation of iterativus is that each stimulus, while individually subliminal, increases the excitability of the tissue until the successive stimulation becomes supraliminal and produces excitation.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.