HAL-uB
Not a member yet
73989 research outputs found
Sort by
Context Matters: Human Faces Hinder Face Pareidolia
No full textArticle In Special Collection: CogNet.International audienceThe human visual system readily processes illusory faces (IFs) as faces, a phenomenon known as face pareidolia. Building on evidence that IF processing elicits face-like neural activity and is sensitive to contextual cues, we investigated, via two experiments, whether and how the presence of human faces as a visual context to IFs influences IF categorization. In Experiment 1, we exploited the frequency-tagging approach in EEG to display IFs within rapid sequences of various object categories, interleaved with either human faces (face context, FC) or houses (nonface context, NC). The IF-selective neural response was significantly weaker and less face-like in FC compared to NC, with different topographical and temporal patterns. In Experiment 2, another group of participants performed an explicit IF detection task and exhibited slower RTs and lower detection accuracy in FC than in NC, consistent with the neural findings from Experiment 1. These results suggest that, rather than facilitating IF categorization, the presence of human faces interferes with IF categorization, likely because they compete for the same face-selective resources. Overall, this research highlights the critical role of context in shaping visual categorization by demonstrating earnestly how the visual environment dynamically influences the neural and perceptual processing of ambiguous stimuli
Géographie des activités de recherche et hiérarchies urbaines
No full textUne version en anglais du chapitre et de l'ouvrage a été publiée en 2025 chez WileyInternational audienceCe chapitre discute l’écart observé entre la hiérarchie des villes sous l’angle de leurs activités de recherche et la hiérarchie urbaine traduite par la distribution de la population. En prenant le cas des systèmes français et britanniques, il montre que la géographie de la production scientifique est fonction de la répartition des effectifs académiques et qu’à effectif donné, les villes les plus peuplées ne sont pas plus scientifiquement productives que les autres. Quelques spécificités disciplinaires sont identifiées : la médecine apparaissant concentrée dans les plus grandes villes contrairement aux sciences humaines et sociales dont le degré de concentration varie selon les systèmes nationaux de recherche
La récusation d'un arbitre en raison des positions doctrinales prises par lui à propos d'une pratique contractuelle
No full textInternational audience(TJ Paris, 28 nov. 2024, no 24/55989, Sté CSF c/ Sarl BTMR et autre, Rev. arb. 2025. 251, note Ch. Jarrosson
A Single Device for Complete Temporal Characterization of Ultrafast Laser Pulses Across Six Octaves
No full textWe report the first reconfiguration-free temporal characterization of a femtosecond light source spanning more than six octaves, from the ultraviolet (210-220 nm) to the midinfrared (15-16 μm), using the recently developed plasma-induced frequency-resolved optical switching (PI-FROSt) technique. A commercial optical parametric amplifier equipped with harmonic-generation and difference-frequency modules is characterized, including the signal, idler, second-and third-harmonic beams, and mid-infrared extensions. All measurements are performed with the same optical setup and switching medium, without any realignment or change of nonlinear elements. These results establish PI-FROSt as a unique, broadband, phase-matching-free, and damage-free diagnostic tool for ultrafast sources
L'arrêt Rodière et le mythe de la rétroactivité de l'annulation pour excès de pouvoir
No full textInternational audienc
Research Engine by Seintinelles: A participatory platform to foster science–society dialogue and inform research priorities in cancer research
No full textInternational audienceno availabl
Déclaration et vérification des créances. Recours de la caution contre l'état des créances. Absence d'inconciliabilité de décisions. Indivisibilité de l'instance en réclamation contre l'état des créances
No full textInternational audience(Com. 21 mai 2025, nos 22-12.510 et 22-12.834, FS-D, Caisse de Crédit mutuel et a. c/ M.P. et a., RPC 2025. Comm. 92, note P. Cagnoli
Paleozoic and Mesozoic oceanic anoxic events and biotic crises
No full textInternational audienceAnthropogenic global warming is causing rapid deoxygenation of the modern oceans, threatening marine ecosystems. The multiple episodes of oceanic anoxic events (OAEs) that occurred during geological history provide a crucial perspective for understanding their mechanisms and consequences. This paper presents the classification system of ocean redox states (from oxic to euxinic), and summarizes the different indicators used for paleo-redox reconstructions such as lithofacies, biofacies, minerals, redox-sensitive elements, isotopes, and biomarkers. Based on the 30 studies in this special issue, we synthesize the following advances: (1) spatio-temporal evolution of ocean anoxia from the Cambrian to the Late Paleozoic and its coupling with the carbon and nitrogen cycles; (2) triggering and driving roles of volcanic activity, climate fluctuations, and enhanced weathering on OAEs; (3) responses of biota to OAEs, including extinction, recovery, and community reorganization; (4) responses of terrestrial ecosystems to OAEs, such as vegetation turnover and increase of lacustrine organic carbon burial; and (5) the modulating role of astronomical orbital cycles (especially eccentricity) on organic matter burial during OAEs. These multidisciplinary results deepen our understanding of the mechanisms and ecological responses of deep-time OAEs and provide geological analogies and theoretical bases for assessing the future trends of modern ocean deoxygenation
Des capteurs plasmo-photoniques pour la sécurité sanitaire des produits agricoles
No full textInternational audienceLa co-intégration de guides d’onde plasmonique et photonique sur une puce silicium suivant une configuration interférométrique à branche unique, dite bimodale permet d’atteindre une sensibilité inégalée lors de la détection de traces de molécules. Des puces fabriquées à bas coût et un prototype d’instrument complet démontrent leur capacité à détecter des contaminants d’intérêt pour le secteur agricole
