threshold 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 potential" >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.

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

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

thresh·old stim·u·lus

(thresh'ōld stim'yū-lŭs) Stimulus of threshold strength, i.e., one just strong enough to excite.