Results 11 to 20 of about 5,457 (183)

Impact of an artificial intelligence deep-learning reconstruction algorithm for CT on image quality and potential dose reduction: A phantom study. [PDF]

Med Phys, 2022
Abstract Background Recently, computed tomography (CT) manufacturers have developed deep‐learning‐based reconstruction algorithms to compensate for the limitations of iterative reconstruction (IR) algorithms, such as image smoothing and the spatial resolution's dependence on contrast and dose levels.
Greffier J, Si-Mohamed S, Frandon J, Loisy M, de Oliveira F, Beregi JP, Dabli D.   +6 more
europepmc   +2 more sources

Alteration of hippocampal CA2 plasticity and social memory in adult rats impacted by juvenile stress. [PDF]

Hippocampus, 2023
Abstract The hippocampal CA2 region has received greater attention in recent years due to its fundamental role in social memory and hippocampus‐dependent memory processing. Unlike entorhinal cortical inputs, the Schaffer collateral inputs to CA2 do not support activity‐dependent long‐term potentiation (LTP), which serves as the basis for long‐term ...
Raghuraman R, Navakkode S, Sajikumar S.
europepmc   +2 more sources

Defining hippocampal area CA2 in the fox (Vulpes vulpes) brain. [PDF]

Hippocampus, 2023
Abstract Since 1959, the Russian Farm‐Fox study has bred foxes to be either tame or, more recently, aggressive, and scientists have used them to gain insight into the brain structures associated with these behavioral features. In mice, hippocampal area CA2 has emerged as one of the essential regulators of social aggression, and so to eventually ...
Dudek SM, Phoenix AN, Scappini E, Shepeleva DV, Herbeck YE, Trut LN, Farris S, Kukekova AV.   +7 more
europepmc   +2 more sources

Silencing hippocampal CA2 reduces behavioral flexibility in spatial learning

Hippocampus, Volume 33, Issue 6, Page 759-768, June 2023., 2023
Abstract The hippocampus is a key structure involved in learning and remembering spatial information. However, the extent to which hippocampal region CA2 is involved in these processes remains unclear. Here, we show that chronically silencing dorsal CA2 impairs reversal learning in the Morris water maze.
Andrew B. Lehr, Frederick L. Hitti, Scott H. Deibel, Tristan M. Stöber   +3 more
wiley   +1 more source

Mechanisms of mGluR‐dependent plasticity in hippocampal area CA2

Hippocampus, Volume 33, Issue 6, Page 730-744, June 2023., 2023
Abstract Pyramidal cells in hippocampal area CA2 have synaptic properties that are distinct from the other CA subregions. Notably, this includes a lack of typical long‐term potentiation of stratum radiatum synapses. CA2 neurons express high levels of several known and potential regulators of metabotropic glutamate receptor (mGluR)‐dependent signaling ...
Mahsa Samadi, Claire A. Hales, Daniel J. Lustberg, Shannon Farris, Madeleine R. Ross, Meilan Zhao, John R. Hepler, Nicholas H. Harbin, Emma S. J. Robinson, Paul J. Banks, Zafar I. Bashir, Serena M. Dudek   +11 more
wiley   +1 more source

Social isolation produces a sex‐ and brain region‐specific alteration of microglia state

European Journal of Neuroscience, Volume 57, Issue 9, Page 1481-1497, May 2023., 2023
High‐resolution morphological measurements of microglia reveal that social isolation produces an expanded microglia state in both male and female hypothalamus and hippocampal regions. An examination of the microglia phagocytic‐lysosomal marker CD68 shows more localisation in female dorsal medial hypothalamus (DMH) and less in the male DMH.
Alex P. Vu, David Lam, Cayla Denney, Kelly V. Lee, Jason R. Plemel, Jesse Jackson   +5 more
wiley   +1 more source

Environmental enrichment and social isolation modulate inhibitory transmission and plasticity in hippocampal area CA2

Hippocampus, Volume 33, Issue 3, Page 197-207, March 2023., 2023
Abstract Environmental factors are well‐accepted to play a complex and interdependent role with genetic factors in learning and memory. The goal of this study was to examine how environmental conditions altered synaptic plasticity in hippocampal area CA2.
Maïthé Loisy, Amel Farah, Assia Fafouri, Aurélien Fanton, Mahboubeh Ahmadi, Ludivine Therreau, Vivien Chevaleyre, Rebecca A. Piskorowski   +7 more
wiley   +1 more source

Risk Assessment of Norovirus Illness from Consumption of Raw Oysters in the United States and in Canada

Risk Analysis, Volume 42, Issue 2, Page 344-369, February 2022., 2022
Abstract Human norovirus (NoV) is the leading cause of foodborne illness in the United States and Canada. Bivalve molluscan shellfish is one commodity commonly identified as being a vector of NoV. Bivalve molluscan shellfish are grown in waters that may be affected by contamination events, tend to bioaccumulate viruses, and are frequently eaten raw. In
Régis Pouillot, Mark Smith, Jane M. Van Doren, Angela Catford, Jennifer Holtzman, Kevin R. Calci, Robyn Edwards, Gregory Goblick, Christopher Roberts, Jeffrey Stobo, John White, Jacquelina Woods, Angelo DePaola, Enrico Buenaventura, William Burkhardt   +14 more
wiley   +1 more source

Se connaître et s’orienter grâce au e-portfolio [PDF]

Revue internationale des technologies en pédagogie universitaire, 2011
Dans le contexte universitaire actuel, de nombreux étudiants rencontrent des difficultés à s’orienter. Pour soutenir l’élaboration active de leur projet d’orientation, une démarche apparaît pertinente, le portfolio, collection de traces et de réflexions ...
Catherine Loisy, Stéphanie Mailles-Viard, Hervé Breton   +2 more
doaj   +1 more source

Loisy-sur-Marne [PDF]

ADLFI. Archéologie de la France - Informations, 2004
Identifiant de l'operation archeologique : 4244 Date de l'operation : 2004 (EX) La parcelle sondee est implantee dans la vallee de la Marne en rive gauche, a 750 m de son cours actuel et a une centaine de metres au sud-est du ruisseau de l’Etang.
Culot-Mailly, Sylvie, Truc, Marie-Cécile, Culot-Mailly, Sylvie   +2 more
openaire   +2 more sources