inadequate stimulus
sub·thresh·old stim·u·lus
a stimulus too weak to evoke a response.
Synonym(s): inadequate stimulus, subliminal stimulus
Farlex Partner Medical Dictionary © Farlex 2012
in·ad·e·quate stim·u·lus
(in-ad'ĕ-kwăt stim'yū-lŭs)A stimulus too weak to evoke a response.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012