Heterologous stimuli
- Heterologous stimuli
- Stimulus Stim"u*lus, n.; pl. {Stimuli}. [L., for stigmulus,
akin to L. instigare to stimulate. See {Instigare}, {Stick},
v. t.]
1. A goad; hence, something that rouses the mind or spirits;
an incentive; as, the hope of gain is a powerful stimulus
to labor and action.
[1913 Webster]
2. That which excites or produces a temporary increase of vital action, either in the whole organism or in any of its parts; especially (Physiol.), any substance or agent capable of evoking the activity of a nerve or irritable muscle, or capable of producing an impression upon a sensory organ or more particularly upon its specific end organ. [1913 Webster]
Note: Of the stimuli applied to the sensory apparatus, physiologists distinguish two kinds: (a) {Homologous stimuli}, which act only upon the end organ, and for whose action the sense organs are especially adapted, as the rods and cones of the retina for the vibrations of the either. (b) {Heterologous stimuli}, which are mechanical, chemical, electrical, etc., and act upon the nervous elements of the sensory apparatus along their entire course, producing, for example, the flash of light beheld when the eye is struck. --Landois & Stirling. [1913 Webster]
The Collaborative International Dictionary of English. 2000.
Look at other dictionaries:
Stimuli — Stimulus Stim u*lus, n.; pl. {Stimuli}. [L., for stigmulus, akin to L. instigare to stimulate. See {Instigare}, {Stick}, v. t.] 1. A goad; hence, something that rouses the mind or spirits; an incentive; as, the hope of gain is a powerful stimulus … The Collaborative International Dictionary of English
Homologous stimuli — Stimulus Stim u*lus, n.; pl. {Stimuli}. [L., for stigmulus, akin to L. instigare to stimulate. See {Instigare}, {Stick}, v. t.] 1. A goad; hence, something that rouses the mind or spirits; an incentive; as, the hope of gain is a powerful stimulus … The Collaborative International Dictionary of English
G protein-coupled receptor — G protein coupled receptors (GPCRs), also known as seven transmembrane domain receptors, 7TM receptors, heptahelical receptors, and G protein linked receptors (GPLR), comprise a large protein family of transmembrane receptors that sense molecules … Wikipedia
Stimulus — Stim u*lus, n.; pl. {Stimuli}. [L., for stigmulus, akin to L. instigare to stimulate. See {Instigare}, {Stick}, v. t.] 1. A goad; hence, something that rouses the mind or spirits; an incentive; as, the hope of gain is a powerful stimulus to labor … The Collaborative International Dictionary of English
Photoreceptor cell — This article is about cellular photoreceptors. For other types of photoreceptors, see Photoreceptor (disambiguation). Rods and cones redirects here. For the Blue Man Group song, see Rods and Cones (song). Neuron: Photoreceptor Cell … Wikipedia
Metabotropic glutamate receptor 5 — Glutamate receptor, metabotropic 5 Identifiers Symbols GRM5; GPRC1E; MGLUR5; mGlu5 External IDs … Wikipedia
Nuclear receptor coregulators — Nuclear receptor coregulators[1] are a class of transcription coregulators that have been shown to be involved in any aspect of signaling by any member of the nuclear receptor superfamily. A comprehensive database of nuclear receptor coregulators … Wikipedia