Les relations d'intertextualité dans Les Amours jaunes témoignent d'un jeu de correspondances et d'allusions littéraires que l'on peut nommer la poétique de l'habit d'Arlequin. Notre recherche porte sur les différentes expressions de la révolte dans le recueil. L'art de la dérision et la parodie contribuent au dialogue intertextuel avec d'une part des auteurs du passé tels que Shakespeare, La Fontaine, Villon et du Bellay. D'autre part, le poète se réfère à l'œuvre de Hugo, aux romans de son père, Edouard Corbière, et fait allusion à la poésie de Baudelaire, de Gautier et de Vigny. Dans le sillage de ses prédécesseurs il dénonce la peinture factice de l'Italie et de l'Espagne littéraires dans la poésie de Lamartine et de Musset. Par ailleurs, Les Amours jaunes illustrent la recherche d'une poétique nouvelle. En effet, Corbière s'interroge à propos de l'échec auquel il attribue une dimension positive qui contribue à la négativité de sa poésie. L'impossible dialogue amoureux le conduit à entrevoir dans l'amour maternel un dédommagement. En outre, le poète recourt à la théâtralité et projette sur la scène du spectacle imaginaire du recueil des figures de la marginalité, emblèmes de la sagesse populaire qui illustrent le renversement des valeurs sociales. Corbière transpose les paysages de la Bretagne dans son univers poétique et rend hommage au monde des marins dont il révèle la vision de la mort. / The intertextuality relations in Amours Jaunes indicate a game of correspondences and of Iilerary allusions that we can call the poetic makeup of Harlequin. Our research deals with the different expressions of the revolt in the anthology. The art of the derision and the parody contribute to the dialogue intertextuel with, on one hand, past authors such as Shakespeare, La Fontaine, Villon, and du Bellay. On the other hand, the poet is inspired by the work of Hugo, his father's novels, Edouard Corbière, and alludes to the poetry of Baudelaire, de Gautier, and de Vigny. Like his predecessors, Corbière denounces the artificial painting of the Italian and Spanish literary in the poetry of Lamartine and de Musset. Besides, Les Amours Jaunes iIIustrate the search for a new poetics. ln fact, Corbière wonders about failure to which he attributes a positive dimension, which contributes to the negativity of his poetry. The impossible love dialogue leads him to discover a rewarding feeling in maternal love. ln addition, the poet resorts to the theatrality and projects on the scene of the imaginary spectacle of the anthology of the faces of the marginality, emblems of popular wisdom that illustrate the overthrow of the social values. Corbière transposes Brittany's landscape into his poetic universe and pay homage to the world of the sailors from whom he takes the vision of death.

This work concerns the investigation of the neuronal mechanisms at the basis of language acquisition and processing, and the complex interactions of language and attention processes in the human brain. In particular, this research was motivated by two sets of existing neurophysiological data which cannot be reconciled on the basis of current psycholinguistic accounts: on the one hand, the N400, a robust index of lexico-semantic processing which emerges at around 400ms after stimulus onset in attention demanding tasks and is larger for senseless materials (meaningless pseudowords) than for matched meaningful stimuli (words); on the other, the more recent results on the Mismatch Negativity (MMN, latency 100-250ms), an early automatic brain response elicited under distraction which is larger to words than to pseudowords. We asked what the mechanisms underlying these differential neurophysiological responses may be, and whether attention and language processes could interact so as to produce the observed brain responses, having opposite magnitude and different latencies. We also asked questions about the functional nature and anatomical characteristics of the cortical representation of linguistic elements. These questions were addressed by combining neurocomputational techniques and neuroimaging (magneto-encephalography, MEG) experimental methods. Firstly, a neurobiologically realistic neural-network model composed of neuron-like elements (graded response units) was implemented, which closely replicates the neuroanatomical and connectivity features of the main areas of the left perisylvian cortex involved in spoken language processing (i.e., the areas controlling speech output – left inferior-prefrontal cortex, including Broca’s area – and the main sensory input – auditory – areas, located in the left superior-temporal lobe, including Wernicke’s area). Secondly, the model was used to simulate early word acquisition processes by means of a Hebbian correlation learning rule (which reflects known synaptic plasticity mechanisms of the neocortex). The network was “taught” to associate pairs of auditory and articulatory activation patterns, simulating activity due to perception and production of the same speech sound: as a result, neuronal word representations distributed over the different cortical areas of the model emerged. Thirdly, the network was stimulated, in its “auditory cortex”, with either one of the words it had learned, or new, unfamiliar pseudoword patterns, while the availability of attentional resources was modulated by changing the level of non-specific, global cortical inhibition. In this way, the model was able to replicate both the MMN and N400 brain responses by means of a single set of neuroscientifically grounded principles, providing the first mechanistic account, at the cortical-circuit level, for these data. Finally, in order to verify the neurophysiological validity of the model, its crucial predictions were tested in a novel MEG experiment investigating how attention processes modulate event-related brain responses to speech stimuli. Neurophysiological responses to the same words and pseudowords were recorded while the same subjects were asked to attend to the spoken input or ignore it. The experimental results confirmed the model’s predictions; in particular, profound variability of magnetic brain responses to pseudowords but relative stability of activation to words as a function of attention emerged. While the results of the simulations demonstrated that distributed cortical representations for words can spontaneously emerge in the cortex as a result of neuroanatomical structure and synaptic plasticity, the experimental results confirm the validity of the model and provide evidence in support of the existence of such memory circuits in the brain. This work is a first step towards a mechanistic account of cognition in which the basic atoms of cognitive processing (e.g., words, objects, faces) are represented in the brain as discrete and distributed action-perception networks that behave as closed, independent systems.

Relying mainly on R. B. Pippin’s and D. Moggach’s interpretative works on Kant and Hegel, the thesis tackles the problem of the reception of Kant by Hegel. It does so by looking into the impact of Kant’s first critique on the Preface, the Introduction and the first part of the section Self-consciousness of the Phenomenology of Spirit. Three Kantian conditions for there to be freedom are identified and shown to be reinterpreted by Hegel in a continuist perspective. These three conditions are spontaneity, reflectivity and negativity which propels and retains the free Kantian subject in the Hegelian becoming of reality.

Transcranial direct current stimulation (tDCS) is a non-invasive form of brain stimulation which uses a very weak constant current to temporarily excite or inhibit activity in the brain area of interest via electrodes placed on the scalp, depending on the polarity and strength of the current. Presently, tDCS is being used as a tool to investigate frontal cognition in healthy controls and to improve symptoms in neurological and psychiatric patients. Relatively little research has been conducted with respect to tDCS and the auditory cortex (AC). The primary aim of this thesis was to elucidate the effects of tDCS on auditory sensory discrimination, assessed with the mismatch negativity (MMN) event-related potential (ERP). In the first pilot study, healthy participants were assessed in a randomized, double-blind, sham-controlled design, in which participants received anodal tDCS over the primary AC (2 mA for 20 minutes) in one session and ‘sham’ stimulation (i.e. no stimulation) in the other. Pitch MMN was found to be enhanced after receiving anodal tDCS, with the effects being evidenced in individuals with relatively low (vs. high) baseline amplitudes. No significant effects were seen with sham stimulation. A second study examined the separate and interacting effects of anodal and cathodal tDCS on MMN measures. MMN was assessed pre- and post-tDCS (2 mA, 20 minutes) in 2 separate sessions, one involving sham stimulation, followed by anodal stimulation, and one involving cathodal stimulation, followed by anodal stimulation. Only anodal tDCS over the AC increased pitch MMN in baseline-stratified groups, and while cathodal tDCS decreased MMN, subsequent anodal stimulation did not significantly alter MMNs. As evidence has shown that tDCS lasting effects may be dependent on N-methyl-D-aspartate (NMDA) receptor activity, a pharmacological study investigated the use of dextromethorphan (DMO), an NMDA antagonist, to assess possible modulation of tDCS’ effects on both MMN and working memory (WM) performance. The study involved four test sessions that compared pre- and post-anodal tDCS over the AC and sham stimulation with both DMO (50 mL) and placebo administration. MMN amplitude increases were only seen with anodal tDCS with placebo administration, not with sham stimulation, nor with DMO administration. In the sham condition, DMO decreased MMN amplitudes. Anodal tDCS improved WM performance in the active drug condition. Findings from this study contribute to the understanding of underlying neurobiological mechanisms mediating tDCS-sensory and memory improvements. As cognitive impairment has been proposed to be the core feature of schizophrenia disorder (Sz) and MMN is a putative biomarker of Sz, a pilot study was conducted to assess the effects of pre- and post-tDCS on MMN measures in 12 Sz patients, as well as WM performance. Temporal, frontal and sham tDCS were applied in separate sessions. Results demonstrated a trend for pitch MMNs to increase with anodal temporal tDCS, which was significant in a subgroup of Sz individuals with auditory hallucinations, who had low MMNs at baseline. Anodal frontal tDCS significantly increased WM performance, which was found to positively correlate with MMN-tDCS effects. The findings contribute to our understanding of tDCS effects for MMN-indexed sensory discrimination and WM performance in healthy participants and individuals with Sz disorder and may have implications for treatment of sensory processing deficits in neuropsychiatric illness.

The present thesis employed event-related potentials, the minute responses of the brain, to examine the differences in processing of increases and decreases in auditory intensity. The manner in which intensity was manipulated (i.e., whether it represented physical or psychological change) varied across the studies of the thesis. Study 1 investigated the processing of physical intensity change during wakefulness and natural sleep. An oddball paradigm (80 dB standard, 90 dB increment, 60 dB decrement) was presented to subjects during the waking state and during sleep. The increment elicited a larger deviant-related negativity and P3a than the decrement in the waking state. During sleep, only the increment deviant continued to elicit ERPs related to the detection of change. The waking and sleeping findings support the notion that increases in intensity are more salient to an observer. Studies 2 and 3 of this thesis determined the degree to which this differential salience could be attributed to the fact that intensity increments result in increased activation of the change and transient detection systems while intensity decrements result in greater activation of only the change detection system. In order to address this question, an alternating intensity pattern was employed (HLHLHLHL) with deviants created by the repetition of a tone in the sequence (HLHLHHHL) that violated the expectancy for a higher (psychological decrements) or lower intensity tone (psychological increments). Because deviant stimuli were physically identical to preceding standards, this manipulation should not have led to increased output of the transient detection system (N1 enhancement), permitting isolation of the output of the change detection system (Mismatch Negativity, MMN). The findings of these studies indicated that psychological increments resulted in shorter latency and larger amplitude MMNs than psychological decrements and that these differences could not be explained by the physical differences between deviant stimuli or temporal integration. This thesis provides convincing evidence that stimuli representing increments in intensity result in faster and more robust change detection. Further, the increased salience of increment stimuli cannot be solely explained by the contribution of transient detector activation, as it persists even when deviance-related processing is isolated to the change detection system.

Ce travail cherche à mettre en évidence de quelle façon Hegel met en œuvre l’une de ses affirmations de jeunesse : « Penser la pure vie, telle est la tâche ». Il en ressort, en rupture avec ce qu’une certaine tradition laisse entendre, à savoir que Hegel serait un penseur formel et froid, que la vie est au fondement de la pensée de cet auteur, trop souvent considéré comme un pur logicien. Dans le même temps, il apparaît un lien indéfectible entre le vivant, ce vivant-ci, l’humain que nous sommes, et le logique, ce mouvement qui est celui de la vie même, sa vérité ; et apparaît aussi une forme de séparation sous-jacente entre vivant et logique, qui fait place à une inquiétude, accentuée par la toute-puissance du négatif. Dès lors, deux lectures de Hegel s’avèrent possibles et nécessaires : l’une qui va dans le sens de la résolution du conflit entre vie et logique, l’autre qui permet d’entrouvrir la porte d’un abîme ou s’avèrerait impossible une ultime résolution, un ultime savoir absolu. Une affirmation assez tardive, faite par Hegel dans plusieurs de ses textes : « Or l’idée immédiate est la vie. », met en évidence autant la permanence de cette question du vivant et du logique, que la difficulté à la penser. / This work seeks to analyze in what way Hegel employs one of his earlier statements: “To think pure life, that is the task.” This break with tradition suggests for some, that Hegel is an a coolness thinker; life, which is often considered a pure logician, forms the basis of thought of the author. At the same time, thought is the unbreakable link between life as we live it and the logic of life. This notion that thinking is the same as life and truth also appears as a form of separation implicit between living and logic. This leads to Hegel’s concern of the omnipotence of the negative. Hegel’s later statement made in several of his texts - “Now the immediate idea is life" - highlights the permanence of this conflict between living and logic and highlights the struggle of the philosopher to reconcile the difficulty of thinking. Therefore, two readings of Hegel’s prove necessary to understand the complexity of his statements: one looks at the resolution of the conflict between life and logic, the other opens a door to the abyss where it is possible to have an ultimate resolution and discover ultimate absolute knowledge.

Si la négativité psychique est commune à chacun, elle peut envahir la dynamique et l’économie psychiques dans des tableaux psychopathologiques eux-mêmes marqués par cet envahissement. Un tel processus psychopathologique viendrait empêcher le rôle « seuil » du corps via la sensorialité, et viendrait grever lourdement les destins pulsionnels ; symbolisations et affects. Selon nos hypothèses, cadre et technique cliniques seraient alors à adapter par une thérapeutique avec et par le corps propre du sujet. Un protocole de 18 sujets cherche à évaluer les efforts de répression, l’alexithymie, la sensorialité aux points d’appui du corps et les représentations corporelles dans des hypothèses qui révèleraient des « abus de négativité psychique ». Quatre études de cas de suivis thérapeutiques permettent une discussion plus en détail en considérant le cas par cas. Nous concluons par des propositions de réaménagements théoriques et cliniques qui permettraient la prise en compte d’un tel abus de négativité dans le cadre de psychothérapies. Pour certains sujets, nous pensons que c’est précisément sur ce seuil qu’un effet thérapeutique est le plus mobilisable. / Psychic negativity exists for everyone, but it can invade both the dynamic and the economic aspects of the psyche, resulting in psychopathologies that are influenced by this invasion. Such a psychopathologic process could hinder the ‘interface’ role of the body through sensibility, and could largely prevent instinctual drives; symbolism and affect. Our hypothesis suggests that the clinical setting and technique should be adapted, with a body-mediated therapy. A study of 18 persons aims at evaluating repression efforts, alexithymia, sensibility at the level of the supporting points of the body and body representations, in supposed cases of ‘excessive psychic negativity. Four case studies focusing on follow-up therapy provide valuable insight on a case-by-case basis. As a conclusion, we make suggestions about theoretical and clinical reorganizations so that ‘excessive psychic negativity’ is taken into account in psychotherapies. For some persons, we think this ‘interface’ role is precisely what could produce a therapeutic effect.

In recent years, negativity has become a dominant theme in the political campaign. However, there are no comprehensive studies to measure the amount of negativity and to examine how parties and candidates adopt these negative strategies, particularly in the Canadian context. Although some studies have focused on a particular aspect of negative campaigning in a Canadian election, the question remains of how and to what extent parties adopt negative strategies in an election. In this thesis, I have collected and analyzed parties’ press releases in the 2015 federal election to examine and explain negativity in parties’ political campaigns. I have tested my results according to five primary theories of negative campaigning, including competitive positioning, ideological proximity, party organization, coalition or minority effect, and negative personalization, to see if these theories apply in the Canadian context. My results indicate that the 2015 federal campaign was a highly negative one, and most of the negative attacks have been directed towards the leader of the Conservative Party, Stephen Harper, while the Conservative Party published the least amount of negative attacks during the campaign. I also found that the Liberal Party has published the most negative statements during the campaign. My results also show that one of the influential factors in shaping parties’ negative campaign strategies is the other parties’ status in public opinion polls, particularly the federal voting intention factor. Although the results show that most of the attacks in the 2015 campaign targeted leaders of parties, I did not find enough support in my models to verify the negative personalization theory. The overall findings of this thesis show that Canadian elections are moving toward a presidential-style campaign, similar to the United States, by becoming more negative and more personalized, which can have significant implications for Canadian democracy.

This critical study examines how TikTok content from body positive trends may influence power relations and reinforce female body negative discourses. The study takes its departure primarily in Michel Foucault. However, additional researchers were brought in to expand on Foucault’s ideas by e.g., introducing gender to Foucauldian theory. 30 TikTok videos belonging to two different body positive trends have been collected and undergone a Multimodal Critical Discourse Analysis according to Foucauldian principals. Findings from the analysis illustrated how users acknowledged and heavily depended on societal body negative discourses to create body positive content. More specifically, this was illustrated when users self-categorised as plus size and pointed out body parts e.g., stomach rolls, that are seen as less desirable in society. Users furthermore directly engaged in behaviour, which was found to be body negative e.g., implying the existence of abnormal and imperfect bodies. Effectively, this behaviour was identified as performative and rooted in a fear of being seen as non-progressive and body negativeThe conclusive results of this thesis thus suggest that users inevitably produce and reproduce body negative discourses by relying heavily on the very same discourses in their TikTok communication. Essentially, the users are then contributing to the social and feminist problem of weight-based discrimination and marginalisation.

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