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Université de Fribourg

No evidence that frontal optical flow affects perceived locomotor speed and locomotor biomechanics when running on a treadmill

Caramenti, Martina ; Lafortuna, Claudio L. ; Mugellini, Elena ; Khaled, Omar Abou ; Bresciani, Jean-Pierre ; Dubois, Amandine

In: Applied Sciences, 2019, vol. 9, no. 21, p. 4589

We investigated how the presentation and the manipulation of an optical flow while running on a treadmill affect perceived locomotor speed (Experiment 1) and gait parameters (Experiment 2). In Experiment 1, 12 healthy participants were instructed to run at an imposed speed and to focus on their sensorimotor sensations to be able to reproduce this running speed later. After a pause, they had...

Université de Fribourg

A biologically-inspired model to predict perceived visual speed as a function of the stimulated portion of the visual field

Solari, Fabio ; Caramenti, Martina ; Chessa, Manuela ; Pretto, Paolo ; Bülthoff, Heinrich H. ; Bresciani, Jean-Pierre

In: Frontiers in Neural Circuits, 2019, vol. 13, p. -

Spatial orientation relies on a representation of the position and orientation of the body relative to the surrounding environment. When navigating in the environment, this representation must be constantly updated taking into account the direction, speed, and amplitude of body motion. Visual information plays an important role in this updating process, notably via optical flow. Here, we...

Université de Fribourg

Distribution and restoration of serotonin-immunoreactive paraneuronal cells during caudal fin regeneration in zebrafish

König, Désirée ; Dagenais, Paule ; Senk, Anita ; Djonov, Valentin ; Aegerter, Christof M. ; Jaźwińska, Anna

In: Frontiers in Molecular Neuroscience, 2019, vol. 12, p. -

Aquatic vertebrates possess diverse types of sensory cells in their skin to detect stimuli in the water. In the adult zebrafish, a common model organism, the presence of such cells in fins has only rarely been studied. Here, we identified scattered serotonin (5-HT)-positive cells in the epidermis of the caudal fin. These cells were distinct from keratinocytes as revealed by their low...

Consortium of Swiss Academic Libraries

Gas dynamics in the Milky Way: second pattern speed and large-scale morphology

Bissantz, Nicolai ; Englmaier, Peter ; Gerhard, Ortwin

In: Monthly Notices of the Royal Astronomical Society, 2003, vol. 340, no. 3, p. 949-968

Université de Fribourg

The careg element reveals a common regulation of regeneration in the zebrafish myocardium and fin

Pfefferli, Catherine ; Jaźwińska, Anna

In: Nature Communications, 2017, vol. 8, p. 15151

The existence of common mechanisms regulating organ regeneration is an intriguing concept. Here we report on a regulatory element that is transiently activated during heart and fin regeneration in zebrafish. This element contains a ctgfa upstream sequence, called careg, which is induced by TGFβ/Activin-β signalling in the peri-injury zone of the myocardium and the fin mesenchyme. In...

Université de Fribourg

Enhancing speed of pinning synchronizability: low-degree nodes with high feedback gains

Zhou, Ming-Yang ; Zhuo, Zhao ; Liao, Hao ; Fu, Zhong-Qian ; Cai, Shi-Min

In: Scientific Reports, 2015, vol. 5, p. 17459

Controlling complex networks is of paramount importance in science and engineering. Despite recent efforts to improve controllability and synchronous strength, little attention has been paid to the speed of pinning synchronizability (rate of convergence in pinning control) and the corresponding pinning node selection. To address this issue, we propose a hypothesis to restrict the control cost,...

Haute école de santé Genève

L'adaptation émotionnelle des infirmiers lors de la prise en soins de patients âgés en fin de vie : le rôle de l'expérience professionnelle : travail de Bachelor

Rodríguez López, Laura ; Ludwig, Catherine (Dir.)

Mémoire de bachelor : Haute école de santé Genève, 2014.

Les projections démographiques de vieillissement de la population (Office fédéral de la statistique (OFS, 2010)) indiquent une future augmentation du nombre de personnes très âgées, vulnérables et en besoin de soins dans les 50 prochaines années. Compte tenu de la pénurie infirmière constatée (Heinz, 2004 ; Jaccard Ruedin et al., 2009 ; Janiszewski Goodin, 2003 ; Simoens et al., 2005)...