Search results for "camp"
showing 10 items of 1995 documents
Hippocampal electrical stimulation disrupts associative learning when targeted at dentate spikes
2017
Hippocampal electrophysiological oscillations, namely theta and ripples, have been implicated in encoding and consolidation of new memories, respectively. According to existing literature, hippocampal dentate spikes are prominent, short‐duration (<30 ms), large‐amplitude (∼2–4 mV) fluctuations in hilar local‐field potentials that take place during awake immobility and sleep. Interestingly, previous studies indicate that during dentate spikes dentate gyrus granule cells increase their firing while firing of CA1 pyramidal cells are suppressed, thus resulting in momentary uncoupling of the two hippocampal subregions. To date, the behavioural significance of dentate spikes is unknown. Here, to …
Materiales y evaluación del nivel de alfabetización para el reconocimiento de bots sociales en contextos de desinformación política
2020
espanolEl ecosistema de medios esta en constante cambio, transformandose a un ritmo que las instituciones educativas no pueden seguir. En esta transformacion mediatica se ha introducido la inteligencia artificial (IA), adaptada a las redes sociales con diversos fines, tambien politicos. Este trabajo se centra en la IA en formato bot como herramienta automatizada para publicar contenido en Twitter y en las competencias necesarias para identificarlos. Los bots buscan imitar el comportamiento humano para crear un clima de opi-nion concreto, participar en conversaciones politicas e interaccionar con cuentas reales para boicotearlas o aumentar su relevancia. Con el objetivo de conocer el nivel d…
Aprendiendo a plantear problemas en el medio. Análisis de una experiencia con estudiantes del Máster de Investigación en Didácticas específicas
2014
El Master de Investigacion en Didacticas especificas permite al profesorado en formacion consolidar toda una serie de conocimientos previos y reflexionar acerca de determinados enfoques, representaciones y recursos trabajados durante sus estudios de Grado. Asimismo, lo prepara para la realizacion de futuras investigaciones que sirvan como base para la innovacion educativa. La primera parte de cualquier proceso investigador radica en la deteccion y concrecion de una problematica. Por ello, utilizando como recurso las salidas de campo realizadas en la asignatura de Bases Didacticas del citado Master, se propuso a los estudiantes que detectaran problemas socioambientales que sirvieran de eje p…
Reconfigurable nonlinear response of dielectric and semiconductor metasurfaces
2021
Abstract Optically resonant dielectric and semiconductor metasurfaces are an emerging and promising area of nanophotonics and light–matter interaction at the nanoscale. Recently, active tuning of the linear response and nonlinear effects of these components has received an increasing amount of interest. However, so far these research directions have remained separated with only few sporadic works that study their combination beginning to appear in the literature. The evolution of nonlinear metasurfaces based on dielectric and semiconductor materials toward reconfigurable and dynamic components could potentially answer the demand of integrated on-chip components that realize essential functi…
Simulación numérica de dinámica relativista de partículas cargadas en campos electromagnéticos empleando el método de Boris
2020
Las aplicaciones basadas en la aceleración de partículas cargadas son muy diversas: colisionadores de partículas, estudios de la estructura molecular y atómica o de las propiedades de materiales, tratamientos contra el cáncer… Por ello, es necesario saber calcular cómo se mueven (y, en consecuencia, qué energía adquieren) estas partículas en presencia de campos electromagnéticos. De esta forma se podrá optimizar el diseño de la estructura aceleradora dependiendo del propósito final que tengan las partículas aceleradas. Vamos a implementar un algoritmo numérico (el método de Boris) que permite resolver numéricamente de forma sencilla la fuerza de Lorentz relativista. Utilizaremos este método…
Examinations of Bilateral Epileptiform Activities in Hippocampal Slices Obtained From Young Mice
2021
Bilateral interconnections through the hippocampal commissure play important roles in synchronizing or spreading hippocampal seizure activities. Intact hippocampi or bilateral hippocampal slices have been isolated from neonatal or immature rats (6–7 or 12–21 days old, respectively) and the mechanisms underlying the bilateral synchrony of hippocampal epileptiform activities have been investigated. However, the feasibility of examining bilateral epileptiform activities of more developed hippocampal circuitryin vitroremains to be explored. For this, we prepared bilateral hippocampal slices from C57 black mice, a strain commonly used in neuroscience and for genetic/molecular modifications. Youn…
Hieracium barrelieri, a new hawkweed species from S Italy, with notes on Tenore’s Hieracium murorum var. barrelieri (Asteraceae)
2015
A new species from Montevergine in Campania, Hieracium barrelieri, is described in detail. It is closest to H. acanthodontoides of H. sect. Acanthodontoidea. H. murorum var. barrelieri, an obsolete taxon described by Tenore, is also discussed, as it was partly based on the same population.
About the Influences of Some Major Biotic Drivers on the Population Dynamics in Host-parasite Systems: Interpretative Lessons from an Extended Nichol…
2020
Population dynamics within host-parasite systems in insects is governed by a series of factors, both endogenous and exogenous. Among them, five factors may be considered as major drivers: the respective inherent rates of increase of the host and of the parasite, the level of resource available to the host, the respective immigration rates of the host and of the parasite. While only the first two (the inherent rates of increase of host and parasite) are considered in the original Nicholson and Bailey model, an extended version of the model includes also the other three parameters, thus providing a broader (although still schematic) approach to the host-parasite population dynamics. A brief a…
Hippocampal Sharp Waves: A Physiological Correlate of LTP?
1988
The irregularly occurring large amplitude hippocampal sharp waves (SPWs) are correlated with synchronous population bursts of CA1-CA3 and subicular pyramidal cells, dentate granule cells and interneurons in all hippocampal fields. We suggest that the SPW-associated neuronal burst is the best candidate for a physiological basis of long-term potentiation (LTP).