544 research outputs found

    Introduction

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    Introduction

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    Is it relevant to use the english word "sentience" in french?

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    Depuis Aristote les animaux sont considĂ©rĂ©s comme des ĂȘtres sensibles, ce qui a Ă©tĂ© reconnu sur le plan juridique dans le code rural en 1976 puis le code civil en 2017. Par ailleurs, les philosophes du XVIIIe siĂšcle ont introduit le concept de « sentience » - la capacitĂ© de ressentir - pour l’opposer Ă  la raison - la capacitĂ© de penser -. Cette notion s’est prĂ©cisĂ©e ultĂ©rieurement entre les mains des philosophes de l’esprit anglo-saxons pour exprimer la capacitĂ© d’éprouver des expĂ©riences subjectives (« qualia », « conscience phĂ©nomĂ©nale »), un concept clair et relativement « simple » mais que seule l’introspection permet d’approcher. En dĂ©pit de cette difficultĂ© ontologique, certains penseurs en Ă©thique animale souhaitent introduire ce concept dans la langue française, sans s’interroger sur sa polysĂ©mie qui, dĂ©jĂ , brouille sa signification dans la littĂ©rature anglophone. En effet, la « sentience » englobe selon les auteurs les sensations, les perceptions, les Ă©motions, les affects, les sentiments, la cognition, la conscience, etc. Chacun de ces termes Ă©tant polysĂ©mique et appartenant Ă  la fois aux champs philosophiques et scientifiques, le terme gĂ©nĂ©rique apparait comme un fourre-tout sĂ©mantique obĂ©rant toute approche raisonnĂ©e. Pour s’en convaincre, il suffit d’envisager la confusion qu’entraĂźnerait le remplacement de l’affirmation « l’animal est un ĂȘtre sensible » par « l’animal est un ĂȘtre sentient ». Sur le plan lĂ©gislatif, il serait source de regrettables malentendus. Soulignons en outre le piĂšge sĂ©mantique que dissimule l’utilisation de l’article dĂ©fini et du singulier, nĂ©gligeant ainsi l’extraordinaire diversitĂ© du monde animal qui s’est Ă©panouie dans l’espace - notre planĂšte - et le temps - 600 millions d’annĂ©es -.Since Aristotle animals are considered as sensitive beings, what was recognized at the legislative level in the French rural and civil codes in 1976 and 2017, respectively. The XVIIIth century philosophers introduced the concept of «sentience» - the ability to feel - to differ from the reason - the capacity to think -. This notion was then clarified by the Anglo-Saxon philosophers of mind to express the capacity to feel subjective experiences («qualia», «phenomenal consciousness»), a clear and relatively «simple» concept but only approachable by introspection. In spite of this ontological difficulty, some animal ethics thinkers wish to introduce this concept into the French language, without wondering about its polysemy which, already, blurs its meaning in the English-speaking literature. According to the authors, «sentience» includes sensations, perception, emotions, feelings, affects, feeling, cognition, consciousness, etc. Each of these terms being polysemic and belonging to both the philosophic and scientific fields, the generic name appears as a semantic oldall compromising any reasoned approach. To convince oneself, it is enough to envisage the confusion driven by the replacement of the asser- tion «the animal is a sensitive being» by «the animal is a sentient being». At the legislative level, it would be the source of regrettable misunderstandings. Let us also underline the semantic trap that hides the grammatical use of the defined article and the singular, so neglecting the extraordinary diversity of the animal kingdom that spread out over space -our planet- and time -600 millions years-

    Effects of alpha-linolenic acid vs. docosahexaenoic acid supply on the distribution of fatty acids among the rat cardiac subcellular membranes after a short- or long-term dietary exposure

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    Previous work showed that the functional cardiac effect of dietary alpha-linolenic acid (ALA) in rats requires a long feeding period (6 months), although a docosahexaenoic (DHA) acid-supply affects cardiac adrenergic response after 2 months. However, the total cardiac membrane n-3 polyunsaturated fatty acid (PUFA) composition remained unchanged after 2 months. This delay could be due to a specific reorganization of the different subcellular membrane PUFA profiles. This study was designed to investigate the evolution between 2 and 6 months of diet duration of the fatty acid profile in sarcolemmal (SL), mitochondrial (MI), nuclear (NU) and sarcoplasmic reticulum (SR) membrane fractions. Male Wistar rats were randomly assigned to 3 dietary groups (n = 10/diet/period), either n-3 PUFA-free diet (CTL), or ALA or DHA-rich diets. After 2 or 6 months, the subcellular cardiac membrane fractions were separated by differential centrifugations and sucrose gradients. Each membrane profile was analysed by gas chromatography (GC) after lipid extraction. As expected the n-3 PUFA-rich diets incorporated n-3 PUFA instead of n-6 PUFA in all the subcellular fractions, which also exhibited individual specificities. The diet duration increased SFA and decreased PUFA in SL, whereas NU remained constant. The SR and MI enriched in n-3 PUFA exhibited a decreased DHA level with ageing in the DHA and CTL groups. Conversely, the n-3 PUFA level remained unchanged in the ALA group, due to a significant increase in docosapentaenoic acid (DPA). N-3 PUFA rich diets lead to a better PUFA profile in all the fractions and significantly prevent the profile modifications induced by ageing. With the ALA diet the n-3 PUFA content, particularly in SR and SL kept increasing between 2 and 6 months, which may partly account for the delay to achieve the modification of adrenergic response

    Experimental study of reflexive erection in rats

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    Les fibres du nerf dorsal du pĂ©nis vĂ©hiculent la sensibilitĂ© du pĂ©nis et constituent le versant affĂ©rent des rĂ©flexes sexuels. Leur stimulation par des chocs de faible durĂ©e provoque une augmentation rĂ©flexe de la pression intracavemeuse, qui est supprimĂ©e par la section bilatĂ©rale des nerfs pelviens effĂ©rents. Lorsqu’on augmente la durĂ©e des chocs, la rĂ©ponse rĂ©flexe n’est obtenue qu’aprĂšs section de la moelle en T8, suggĂ©rant la possibilitĂ© d’un contrĂŽle inhibiteur descendant de ce rĂ©flexe d’érection. Chez les rats spinaux, la rĂ©ponse rĂ©flexe diminue d’amplitude, lorsque l’on augmente l’intensitĂ© de la stimulation. Cette inhibition segmentaire n’est pas due au recrutement de fibres sensitives inhibitrices. Elle pourrait rĂ©sulter de la mise en jeu d’un rĂ©flexe sympathique antiĂ©rectile s’opposant au rĂ©flexe d’érection.The dorsal nerve of the penis, which carries the somatic sensory information of the glans and the penile skin constitutes the afferent limb of sexual reflex responses. Its stimulation by trains of rectangular pulses of small duration (< 0,1 ms) leads to reflex increase of the intracavemous pressure which is abolished by bilateral section of the efferent pelvic nerves. Increasing pulse duration to 1 ms fails to elicit this reflex response in intact rats. Such a stimulation consistenly elicits it in rats with spinal transection at the level T8, suggesting a possible descending inhibitory action of supraspinal centers on the lombosacral spinal cord. In acute spinal rats, the reflex response progressively decreases when intensity of afferent stimulation increases. This inhibitory effect is not due to recruitment of inhibitory afferent fibers and could result from reflex activation of spinal sympathetic antirectile centers

    The fables of pity: Rousseau, Mandeville and the animal-fable

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    Copyright @ 2012 Edinburgh University PressPrompted by Derrida’s work on the animal-fable in eighteenth-century debates about political power, this article examines the role played by the fiction of the animal in thinking of pity as either a natural virtue (in Rousseau’s Second Discourse) or as a natural passion (in Mandeville’s The Fable of the Bees). The war of fables between Rousseau and Mandeville – and their hostile reception by Samuel Johnson and Adam Smith – reinforce that the animal-fable illustrates not so much the proper of man as the possibilities and limitations of a moral philosophy that is unable to address the political realities of the state
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