threshold stimulus


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Related to threshold stimulus: subthreshold stimulus, maximal stimulus

stimulus

 [stim´u-lus] (L.)
any agent, act, or influence that produces functional or trophic reaction in a receptor or an irritable tissue.
conditioned stimulus a stimulus that acquires the ability to evoke a given response by repeatedly being linked with another stimulus that naturally evokes that response; see also conditioning.
depolarizing stimulus a stimulus that lowers the resting potential, making the inside of a fiber less negative. In cardiac fibers this means bringing the resting potential from −90 mV to −70 mV.
discriminative stimulus a stimulus associated with reinforcement, which exerts control over a given type of behavior; the subject must discriminate between closely related stimuli and respond positively only with this particular stimulus.
eliciting stimulus any stimulus, conditioned or unconditioned, that elicits a response.
threshold stimulus a stimulus that is just strong enough to elicit a response.
unconditioned stimulus any stimulus that naturally evokes a specific response; see also conditioning.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

thresh·old stim·u·lus

a stimulus of threshold strength, that is, one just strong enough to excite.
See also: adequate stimulus.
Synonym(s): liminal stimulus
Farlex Partner Medical Dictionary © Farlex 2012

thresh·old stim·u·lus

(thresh'ōld stim'yū-lŭs)
A stimulus of threshold strength, i.e., one just strong enough to excite.
See also: adequate stimulus
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

thresh·old stim·u·lus

(thresh'ōld stim'yū-lŭs)
Stimulus of threshold strength, i.e., one just strong enough to excite.
Medical Dictionary for the Dental Professions © Farlex 2012