subthreshold stimulus

sub·thresh·old stim·u·lus

a stimulus too weak to evoke a response.

sub·thresh·old stim·u·lus

(sŭb-threshōld stimyū-lŭs)
Stimulus too weak to evoke a response.
References in periodicals archive ?
Recently, Wang and Chen revealed that autapses provide an opportunity to engineer the response of a HH model to subthreshold stimulus [24].