Cette recherche porte sur l’acquisition et la construction de la notion de temps chez les enfants de 5 à 9 ans, c’est-à-dire ceux qui fréquentent des classes allant de la 3e maternelle à la 3e année primaire. Dans la partie théorique nous analysons les différentes notions constitutives qui caractérisent le temps :l’ordre de succession, la durée, le cycle, l’irréversibilité, l’horizon temporel. Nous nous intéressons également aux notions linguistiques ainsi qu’aux notions associées telles que la causalité, les perspectives diachroniques, la vitesse et la notion d’âge. Nous investiguons ensuite l’état actuel des données concernant la connaissance de la notion de temps chez l’enfant en synthétisant les approches théoriques et expérimentales de Piaget (1946) sur le temps physique et les opérations logico-mathématiques, celle de Fraisse (1967) et Montangero (1988) sur les différents niveaux d’adaptation au temps, celles de Friedman (1991), Nelson (1996), Godard et Labelle (1998) et Tartas (2001) sur l’acquisition du temps conventionnel et la localisation dans le temps. Puisque nos questions de recherche concernent l’évolution de la notion de temps et puisqu’elles s’inscrivent dans le champ d’étude de la psychologie du développement (même s’il y a aussi des liens avec la psychologie cognitive, la linguistique et l’éducation), nous avons confronté les théories de différents développementalistes :Piaget, Vygotski, Wallon, Nelson et Karmiloff-Smith. Même si ces auteurs sont tous des cognitivistes et des constructivistes, leurs conceptions se différencient en ce qui concerne les facteurs étudiés, la définition du « concept », la conception du « moteur du développement », le rôle accordé à l’action, à « l’autre », au milieu ;le statut attribué au langage et à la médiation verbale dans la problématique « cognition-langage ». Afin de respecter une vision globale de l’enfant et de la notion de temps, la partie empirique porte à la fois sur le temps représenté et vécu. Nous avons étudié la maîtrise des systèmes de temps conventionnels, l’orientation et la localisation temporelles, la compréhension des relations temporelles, la notion d’ordre de succession et l’évaluation de durées. Nous nous sommes également penchée sur la définition et la représentation du concept, la notion d’âge, les représentations infantiles de la croissance et du vieillissement, l’attitude affective de l’enfant vis-à-vis son dynamisme évolutif et l’horizon temporel (passé, présent et futur). C’est en analysant les taux de réussite pour chacune des tâches dans un même cadre temporel (journée, jours de la semaine, semaine, mois de l’année, saisons, année, période de vie, vie entière) que nous pouvons dégager des « niveaux d’appropriation » des différentes unités temporelles ainsi que des « profils de compétence » qui différencient les enfants d’années scolaires différentes. Les résultats sont discutés du point de vue des facteurs qui interviennent dans la maîtrise des notions et concepts temporels. Nous étudions plus particulièrement l’impact et le rôle de trois facteurs :l’élargissement du champ conceptuel (« empan cognitif »), la possibilité d’associer les concepts temporels à des expériences vécues ou à des images mentales précises et la médiation verbale (en termes de liens entre langage et pensée). / Doctorat en sciences psychologiques / info:eu-repo/semantics/nonPublished

<p>Profesionalnim vozačima osnovno zanimanje je upravljanje motornim vozilom. Izvođenje radnih zadatka podrazumeva stalnu napregnutost pažnje vezanu za vidne i zvučne podražaje koji se brzo smenjuju, &scaron;to zahteva da vozač adekvatno i tačno reaguje na promene. Prijem informacija, obrada, dono&scaron;enje odluke i izvr&scaron;avanje motornog odgovora su procesi koji prate jedni druge i čine vreme percepcije-reakcije (VPR). Uslovi i zahtevi rada za profesionalne vozače su isti i za mlađe i starije radnike i povezani su sa velikom odgovorno&scaron;ću za ljudske živote i materijalna dobra, bez obzira na to &scaron;to je poznato, da se radna sposobnost menja zbog prirodnog procesa starenja. Merenje i utvrđivanje vrednosti VPR je važan deo ispitivanja u okviru procene zdravstvene sposobnosti za bezbednu vožnju. Ciljevi: Utvrđivanje vrednosti VPR kod profesionalnih vozača i poređenje sa kontrolnom grupom. Ispitivanje uticaja starosti i vozačkog iskustva na VPR kod profesionalnih vozača. Materijal i metode : Ova studija procenjuje deo sposobnosti profesionalnih vozača merenjem VPR prostog i složenog, važnih za sigurnost u vožnji. Istraživanje je sprovedeno u vremenskom periodu od devet meseci i obuhvatilo je 548 ispitanika mu&scaron;kog pola, starosti od 21 do 65 godina. Eksperimentalnu grupu je činilo 278 ispitanika (profesionalni vozači), a kontrolnu 270 ispitanika kojima osnovno zanimanje nije profesionalna vožnja. Testiranje je izvedeno pomoću hardversko-softverskog sistema za određivanje vrednosti VPR na proste i složene audio-vizuelne podražaje. Merenja su sprovedena na tri nivoa težine zadatka: prosto VPR, i testovi složenog VPR na promenu pozicije podražaja i vrste boje. Rezultati: Utvrđene su značajno niže srednje vrednosti VPR na sva tri nivoa testiranja u grupi profesionalnih vozača u poređenju sa kontrolnom grupom. Utvrđena je pozitivna povezanost srednjih vrednosti VPR sa godinama života i dužinom profesionalnog vozačkog radnog staža na svim testovima u grupi profesionalnih vozača. Nisu utvrđene značajne razlike u procentu pogre&scaron;nih odgovora u odnosu na životno doba i dužinu vozačkog staža, &scaron;to govori o pozitivnim efektima profesionalne prakse u vožnji. Nisu utvrđene značajne razlike srednjih vrednosti VPR kod vozača u gradskom ili međugradskom saobraćaju, kao i u odnosu na broj pređenih kilometara mesečno na svim testovima. Obeležja poput starosti (godine života), profesionalne prakse (iskustvo u godinama profesionalne vožnje), neke promene zdravstvenog stanja (postojanje bolesti ili drugih poremećaja) u grupi profesionalnih vozača pokazale su se kao prediktori sa značajnim nivoom povezanosti sa vrednostima VPR. Metodom vi&scaron;estruke regresione analize smo ispitali smo povezanost vrednosti VPR sa posmatranim prediktorima kada ih analiziramo zajedno uzimajući u obzir njihovu međusobnu interakciju. Regresioni model pokazuje kako skup posmatranih obeležja predviđa promene VPR. Zaključak: Utvrđene vrednosti i prediktivni model promena VPR profesionalnih vozača mogu biti korisni podaci u svakodnevnom radu zdravstvenim ustanovama koje procenjuju vozačku sposobnost, kako bi se identifikovali potencijalno rizični vozači sa vi&scaron;im vrednostima VPR, zamorenih i osoba sa početnim o&scaron;tećenjima nervnog sistema, sklonih povredama u saobraćaju i na radu, u cilju prevencije saobraćajnih udesa i povreda, kao i osiguranja da vozači imaju sposobnosti neophodne za bezbednu vožnju. Utvrđene vrednosti VPR mogle bi naći primenu pri oceni radne sposobnosti i kod radnika na drugim zanimanjima gde se očekuje brza i tačna reakcija na određeni podražaj.</p> / <p>The term professional driver refers to people whose main occupation is driving a motor vehicle. Performing work tasks implies a constant strain of attention related to visual and audible stimuli that change quickly, which requires the driver to respond adequately and accurately to changes. Receiving information, processing, making a decision and executing a motor response are processes that accompany each other and make up the perception-reaction time (PRT). The working conditions and requirements for professional drivers are the same for both younger and older workers and are associated with great responsibility for human lives and material goods, regardless of the fact that it is known that working ability changes due to the natural aging process. Measuring and determining the value of PRT is an important part of testing as part of the assessment of health fitness for safe driving. Aims: Determination of PRT values in professional drivers and comparison with the control group. Examination of the effects of aging and driving experience on the PRT of professional drivers. Material and methods: This study assesses part of the ability of professional drivers by measuring simple and complex PRT important for driving safety. The study was conducted over a period of nine months and included 548 male respondents, aged 21 to 65 years. The experimental group consisted of 278 respondents (professional drivers), and the control group consisted of 270 respondents whose main occupation is not professional driving. Testing was performed using a hardware-software system to determine the value of PRT on simple and complex audio-visual stimuli. Measurements were carride out at three levels of task difficulty: simple PRT, and complex PRT tests to change stimuli position and color type. Results: Significantly lower PRT mean values were found at all three levels of testing in the group of professional drivers compared to the control group. A positive correlation was found between the mean PRT values with age and experience of professional driving on all tests in the group of professional drivers. No significant differences were found in the percentage of incorrect answers in relation to the age and driving experience, which shows the positive effects of professional driving practice. No significant differences were found in the mean PRT values on all tests for drivers in urban or interurban traffic and in relation to the number of kilometers per month. Individual characteristics as, aging, professional practice (experience in years of professional driving), changes in health status (existence of diseases or other disorders) in the group of professional drivers showed to be predictors with a significant level of correlation with PRT values. Using the method of multiple regression analysis, we examined the correlation of PRT values with the observed predictors when we analyze them together, taking into account their mutual interaction.The regression model shows how the set of observed features predicts changes in PRT. Conclusion: The determined values and the predictive model of changes PRT of professional drivers can be useful data in the daily work of health institutions that assess driving ability, in order to identify potentially risky drivers with higher PRT values,, tired and people with initial nervous system damage, prone to traffic injuries and at work, in order to prevent traffic accidents and injuries, as well as to ensure that drivers have the skills necessary for safe driving. The determined values of PRT could be used in the assessment of work ability and in workers in other occupations where a quick and accurate response to a particular stimulus is expected.</p>

In this report, we evaluate the role of visual areas responsive to motion in the human brain in the perception of stimulus speed. We first identified and localized V1, V3A, and V5/MT+ in individual participants on the basis of blood oxygenation level-dependent responses obtained in retinotopic mapping experiments and responses to moving gratings. Repetitive transcranial magnetic stimulation (rTMS) was then used to disrupt the normal functioning of the previously localized visual areas in each participant. During the rTMS application, participants were required to perform delayed discrimination of the speed of drifting or spatial frequency of static gratings. The application of rTMS to areas V5/MT and V3A induced a subjective slowing of visual stimuli and (often) caused increases in speed discrimination thresholds. Deficits in spatial frequency discrimination were not observed for applications of rTMS to V3A or V5/MT+. The induced deficits in speed perception were also specific to the cortical site of TMS delivery. The application of TMS to regions of the cortex adjacent to V5/MT and V3A, as well as to area V1, produced no deficits in speed perception. These results suggest that, in addition to area V5/MT+, V3A plays an important role in a cortical network that underpins the perception of stimulus speed in the human brain.

周邊注射安非它命能夠影響動物受試在表現與時間知覺有關的操作式制約行為作業，歷來被研究者認為是大腦多巴胺神經系統與動物時間知覺系統有關的主要證據之一。本研究所共同採用的研究方法為先注射多巴胺受體專屬拮抗劑再於大鼠受試周邊腹腔注射安非它命的方式探討安非它命影響大鼠時間知覺的大腦機制為何。實驗一利用區辨性增強低頻反應作業觀察周邊注射多巴胺受體專屬拮抗劑何者可以反制周邊安非它命對此作業的影響效果，結果發現多巴胺D1受體拮抗劑SCH23390與D2受體拮抗劑raclopride均可反制周邊安非它命的效果。實驗二同樣利用區辨性增強低頻反應作業，但是將SCH23390與raclopride分別注入海馬迴、背側中區紋狀體、腹側側邊紋狀體、依核、內側前額葉皮質以及腹側頂蓋區等六個部位，觀察何種多巴胺受體拮抗劑可在那些大腦部位產生反制周邊安非它命的效果。結果發現SCH23390可在海馬迴、依核、內側前額葉皮質以及腹側頂蓋區等四個部位產生反制周邊安非它命的效果，而raclopride可在腹側側邊紋狀體與內側前額葉皮質兩個部位產生同樣的反制效果。實驗三利用高峰時距作業觀察SCH23390在海馬迴與內側前額葉皮質是否能反制周邊安非它命對此作業的影響效果，結果發現SCH23390僅在海馬迴會影響大鼠受試的正常表現，特別是在與周邊安非它命同時注射的時候。綜合以上結果顯示，周邊注射安非它命能夠使大鼠受試在區辨性增強低頻反應作業當中表現出時間知覺變快的傾向，這個效果需要同時透過大腦內的海馬迴、依核、內側前額葉皮質以及腹側頂蓋區的多巴胺D1類受體和腹側側邊紋狀體與內側前額葉皮質的多巴胺D2類受體。 / The central dopaminergic system has been hypothesized to play a role in time perception based on the results that peripheral injections of d-amphetamine alter the responses in time-related operant conditioned behavioral tasks. The present study investigated the effect by injecting specific dopamine receptor antagonists before peripheral d-amphetamine injections in rats. Data from Experiment I showed that both peripheral the dopamine receptor D1 antagonist SCH23390 and D2 antagonist raclopride could attenuate the response alteration on differential reinforcement of low-rates responding task induced by peripheral d-amphetamine. By using the DRL task, Experiment 2 employed the microjeciton technique to determine the neural substrates for the DA receptor antagonist to attenuate the effect of peripheral d-amphetamine. The infusion sites for DA receptor antagonist were the hippocampus, the dorsomedial striatum, the ventrolateral striatum, the nucleus accumbens, the medial prefrontal cortex, and the ventral tegme ntal area. The results showed that SCH23390 infused into the hippocampus, the nucleus accumbens, the medial prefrontal cortex, the ventral tegmental area could attenuate the effect induced by peripheral d-amphetamine, and such attenuation effects were also observed for raclopride infused into the ventrolateral striatum, the medial prefrontal cortex. Experiment 3 tried to confirm the results of Experiment 2 by microinjecting SCH23390 in hippocampus and medial prefrontal cortex under peak-interval task. Only SCH23390 in the hippocampus altered the subject's normal performance in this task especially when combined with peripheral injection of d-amphetamine. In conclusion, that the response alteration on the DRL task induced by peripheral injection ofd-amphetamine suggests the subject's timing perception being accelerated. These effects of d-amphetamine were mediated by simultaneous activation of multiple dopamine receptor subtypes including D1 receptors located in the hippocampus, nucleus accumbens, medial pref rontal cortex, ventral tegmental area, as well as D2 receptors located in the ventrolateral striatum, medial prefrontal cortex.

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This thesis examines the relationships between different nations and cultures in Ivanhoe, The Talisman, Quentin Durward, Anne of Geierstein and Count Robert of Paris using Post-colonial theory. An analysis of Scott’s conception of society in general shows that 18th century Scottish historiography is fundamental to his vision of the world because it forms the basis of his systematization of history, social development and interaction between communities. It also profoundly influences his imagery and descriptions, as well as providing him with a range of stereotypes that he manipulates so skilfully that his great dependence upon them is occulted. Contemporary ideas and his own attitude to the Union of Scotland and England lead him to conceive of nation formation in terms of descent and hybridity. In part, he sees the nation as a community of blood. Yet, his acceptance of the Union means that he also considers it to be a body of different ethnic elements that live together. His use of the 18th century metaphor of family to figure the nation allows him to incorporate heredity and miscegenation into his analysis of national development through father-daughter couples. The father represents traditional culture, and the daughter, the nation’s present and future; her marriage to a foreigner signifying that people of differing descent can cross the nation’s porous borders. Religion is the final frontier: Christian nations cannot absorb non-Christians. Scott sees dominance and subordination as a complex part of human relationships. Apparently-subordinate subjects possess occulted power because their support of the hegemonic is often essential if the latter is to maintain its superiority. While his conception of society in patriarchal terms means that his female characters cannot offer violence to men, he shows that passive resistance is very effective. Through mimicry, the subordinate threatens the power and identity of the dominant. Power is not only conceived of in political terms. In Ivanhoe, Scott reveals the importance of moral stature which allows Rebecca to dominate the work although she is at the bottom of the political and racial hierarchy that structures English society. Scott’s conception of time is fundamental to the manner in which he conceives of the nation. Historical cultural forms are physicalised through chronotopes. Politically subordinate cultures base their actions in the present on pedagogic time, while the dominant ignore their past and live only in the present and the future. He also expresses dominant-subordinate relationships through speed, with time moving quickly for the powerful and slowly for the weak. Time, whether in the form of history, the characters’ perception of it or speed amalgamates all the various elements of Scott’s conception of nationhood into a seamless whole.<p><p>Cette thèse analyse par le biais la théorie post-coloniale les relations internationales dans Ivanhoe, Quentin Durward, Anne of Geierstein et Count Robert of Paris. Les théories historiques élaborées en Écosse au XVIIIème siècle sont fondamentales dans la vision scottienne parce qu’elles forment la base de la systematisation de l’histoire, du développement sociale et, par conséquent, des relations entre les différentes communités. Ces théories influencent profondement les images qu’il utilise et la façon dont il décrit les caractères et les scènes. De plus, elles lui fournissent une gamme de stéréotypes qu’il manipule très adroitement. Sa conception de la manière dont se forment les nations vient des idées contemporaines et de sa propre expérience de l’union politique de l’Angleterre et de l’Écosse. Il considère la nation comme une communauté fondée sur l’ascendance par le sang mais aussi comme un groupe d’ethnies différentes qui vivent ensemble. Sa description de la nation emprunte à la métaphore de la famille courante au XVIIIième. Celle-ci lui permet d’inclure dans son analyse l’héridité et la mixité au moyen des couples formés par un père et sa fille. Le père représente la culture traditionelle, et la fille, le présent et le futur national. Son marriage avec un étranger signifie que les gens d’ascendance différente peuvent traverser les frontières perméables d’une nation. La religion est la frontière ultime: les nations chrétiennes ne peuvent absorber de non-chrétiens. Scott considère que la domination et la sujetion forment une partie complexe des relations humaines. Les sujets qui paraissent subordonnés possèdent en fait un pouvoir occulte, le dominant ayant besoin de leur soutien pour maintenir sa position. Bien que sa conception patriarcale de la société fasse que les caractères feminins ne manifestent pas d’agression envers les hommes, il montre que la résistance passive est très efficace. En imitant le sujet dominant, le sujet subordonné menace le pouvoir et l’identité de ce dernier. Le pouvoir ne s’exprime pas seulement dans la politique. Rebecca dans Ivanhoe revèle l’importance que revêtent le caractère et la moralité. Bien qu’elle soit au bas de la hiérarchie structurante de la société anglaise, elle domine le roman. <p>La conception que Scott se fait du temps est fondamentale à celle de la nation et de la culture. Au moyen du chronotope, les cultures historiques prennent des formes physiques. Les cultures qui sont subordonnées politiquement basent leur action au présent sur le “temps pédagogique”. Au contraire, le dominant rejette son passé et ne vit qu’au présent et au futur. Les relations entre le pouvoir dominant et le subordonné s’expriment aussi par la vitesse: le temps passe vite pour les puissants, mais lentement pour les faibles. En définitive, tous les éléments de la conception scottienne de la nation sont liés au temps, qu’il s’agisse de l’histoire, de perception par les caractères, ou de la vitesse.<p> / Doctorat en philosophie et lettres, Orientation langue et littérature / info:eu-repo/semantics/nonPublished

My thesis examines the nature of contemporary fictional narration and explores its relations to other types of narration - mainly texts where educational or informative function prevails over the aesthetic one. The whole work is divided into four parts. The first part is theoretical; it sets up basic areas of interest and names methods, tools and models that will be tested on selected examples from Slavonic literatures. The second part analyses spatial and temporal relations of fictional narrative. Chapter 2.1 treats time and space in a novel mostly from the compositional point of view (based on the example of Sasha Sokolov's A School for Fools), while in the next chapter, focusing on ideational interconnections between literary and social- political utopias, both fictionality and temporality are understood more broadly than mere narrative categories: they serve as certain points of connection between the immanent occurrence of meaning in the "world of text" and its historical background. The third part continues in this direction, only what we mean by context here is not the collective historical background, but an individual sphere of everyday life. Our focus switches to two genres standing on the boundary of literary fiction and non-fiction - personal correspondence and a travel journal (travelogue). The...