"Carbon dioxide acts more as an excitant," Dr. Conlon explains.
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After they both jokingly touch Fallon's desk — "I've always wanted to touch the desk," Joanna says — Chip can't contain his excitant any longer and jumps up to audience cheers.
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They say the painkiller also has been nicknamed "the drug of fighters" for its well-documented use by jihadist fights in the Middle East "both as an excitant and to increase the capacity for physical force."
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C'est à la fois très très innocent Et très très excitant.
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In case the exciting > substance is something the dog eats, the secretion is thick; if it be one > that the dog refuses, the secretion is more liquid. Any other excitant, > acting on any sense whatever (or any combination of excitants), may provoke > a “conditional” reflex secretion of either kind, provided it has previously > acted on the animal conjointly with another excitant which has produced an > unconditional reflex. The conditional reflexes are very instable and > variable. But the exact conditions of their origin, their force and their > disappearance can be stated in physiological terms.
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In the Indian theory of Rasa, Uddipana is the excitant or determinant which inflames sentiments or emotions, and ālambana is that on which the sentiment hangs i.e. ālambana is with reference to the sentiment which arises as the link between a sentiment and the cause which excites it. In Rasa process, the nature or object is said to be visibly present before the asraya as an excitant but the object that arouses emotions is usually imagined by the poet or dramatist; the mere presence of vibhava impels the configuration of Pratibha (the intuitive outcome of wisdom or knowledge) to change it in no time. As per the Rasa of Heroic devotion in compassion the enhancing excitants include transitory emotions such as impatience, understanding and happiness, and Krishna in some disguised form is offered by the hero, motivated by kindness, his own body.
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Potassium efflux from cardiac cells decreases action potential duration and results in non-uniform repolarization of the cardiac cells.Harris, A. S., Bisteni, A., Russell, R. A., Brigham, J. C., & Firestone, J. E. (1954). Excitory factors in ventricular tachycardia resulting from myocardial ischemia: potassium a major excitant. Science 119, 200−203 The heterogeneous repolarization of the cardiac tissue permits reentry of action potentials into conducting pathways, which manifests as malignant arrhythmias in the heart.
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Röschlaub helped to bring out the dynamic interplay between the outer stimulant ('excitant') and the inner life potential (excitability) resulting in the activity known as life (biological excitation). The organism possesses an intrinsic receptive activity to be acted upon but also a proactive ability to respond. Röschlaub also refined Brown's idea that disorders resulted from an excess (hypersthenia) or deficit (hyposthenia) of stimuli by adding that this involved a disporoportion between the receptive and pro-active sides of excitability.
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Kainic acid is utilised in primary neuronal cell cultures and in the acute brain slice preparation to study the physiological effect of excitotoxicity and assess the neuroprotective capabilities of potential therapeutics. Kainic acid is a potent central nervous system excitant that is used in epilepsy research to induce seizures in experimental animals, at a typical dose of 10–30 mg/kg in mice. In addition to inducing seizures, kainic acid is excitotoxic and epileptogenic. Kainic acid induces seizures via activation of kainate receptors containing the GluK2 subunit and also through activation of AMPA receptors, for which it serves as a partial agonist.
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Its effective action is localised at the periphery. ... I find that even after ... complete denervation, whether of three days’ or ten months’ duration, the plain muscle of the dilatator pupillae will respond to adrenalin, and that with greater rapidity and longer persistence than does the iris whose nervous relations are uninjured. Therefore, it cannot be than adrenalin excites any structure derived from, and dependent for its persistence on, the peripheral neurone. ... The point at which the stimulus of the chemical excitant is received, and transformed into what may cause the change of tension of the muscle fibre, is perhaps a mechanism developed out of the muscle cell in response to its union with the synapsing sympathetic fibre, the function of which is to receive and transform the nervous impulse.
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In Indian philosophy ālambana refers to the objective basis of a perception or sensation; according to which philosophy Kārana (cause) and all attendant emotional conditions are known as Vibhavas which are of two kinds – a) Ālambana, the personal and human object and substratum, and b) Uddipana, the excitant. Ālambana may further be divided into asraya and visaya, Radha is asraya and Krishna is visaya; Radha, as the devotee, experienced greater pleasure than Krishna who remained the object of her veneration. Visaya is the potential object of a perceptual consciousness, ālambana is the objective basis which can even be the cause of perceptual or cognition support for a perceptual error. The Nyaya school does not consider the object in front to be the ālambana of the illusory cognition but rather the interfering external element with its own characteristics.
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