Search results for " memory"
showing 10 items of 1351 documents
Transcranial magnetic stimulation and neuroplasticity
1998
We review past results and present novel data to illustrate different ways in which TMS can be used to study neural plasticity. Procedural learning during the serial reaction time task (SRTT) is used as a model of neural plasticity to illustrate the applications of TMS. These different applications of TMS represent principles of use that we believe are applicable to studies of cognitive neuroscience in general and exemplify the great potential of TMS in the study of brain and behavior. We review the use of TMS for (1) cortical output mapping using focal, single-pulse TMS; (2) identification of the mechanisms underlying neuroplasticity using paired-pulse TMS techniques; (3) enhancement of th…
Serum Response Factor-Mediated Gene Regulation in a Drosophila Visual Working Memory
2013
Summary Background Navigation through the environment requires a working memory for the chosen target and path integration facilitating an approach when the target becomes temporarily hidden. We have previously shown that this visual orientation memory resides in the ellipsoid body, which is part of the central complex in the Drosophila brain. Former analysis of foraging and ignorant mutants have revealed that a hierarchical PKG and RSKII kinase signaling cascade in a subset of the ellipsoid-body ring neurons is required for this type of working memory in flies. Results Here we show that mutants in the ellipsoid body open ( ebo ) gene, which encodes the actin-binding protein Exportin 6, e…
La Settimana Santa in Sicilia: invenzioni, transformazioni, permanenze
2021
Le cerimonie della Settimana Santa siciliana presentano, da luogo a luogo, caratteri (che lasciano trasparire, con maggiore o minore evidenza, specifici retroterra storico-culturali e peculiari tradizioni religiose. In alcuni casi, soprattutto nei centri di tradizione rurale, certe sezioni dei riti sembrano sostenute da una visione del mondo e da istanze proprie delle culture agropastorali ed espongono simbolismi che, richiamando l’esigenza di promuovere la renovatio temporis, rivelano il legame istituito a livello mitico tra la rinascita primaverile della natura e la vicenda di morte e resurrezione dell’Uomo-Dio. In altri casi, particolarmente nelle città e nei paesi più grandi, si osserva…
Percezione aptica e schema corporeo in soggetti con obesità grave
Il presente e la ricchezza delle stratificazioni. Riflessione su Palermo e le città del Mediterraneo
2020
Così come la Sicilia, nella metafora letteraria, anche le sue città sono plurali, possiedono identità molteplici. Palermo è il compendio di forme derivanti dai modi di abitare che nei secoli si sono succeduti, prodotte dalle popolazioni e da culture che hanno attraversato e modificato il contesto urbano, accogliendo e negando valori, intersecandosi, mescolandosi, dando origine a un sistema ricco di relazioni e denso di voci e di storia. Dobbiamo avere la consapevolezza di questi attraversamenti: migrazioni di uomini, di culture, di linguaggi e di forme dell’abitare. Ma questa grande ricchezza di manifestazioni necessita sempre di un continuo riconoscimento, di una comprensione autentica, sc…
I colori fra il giallo e l’azzurro del cielo
2017
In Carlo Scarpa’s architecture it is noticeable how colour is able to communicate sensations and emotions. He drew attention to this in many of his constructed spaces, choosing to use the “ephemeral” perception of a colour which changes according to the person who sees it and how he recalls it. This essay will consider the sensory experiences of a possible visitor, highlighting his intimate and privileged relationship with light and colour, by means of the experience carried out by Carlo Scarpa in his re-functionalization of Palazzo Chiaramonte, called Steri, in Palermo. The places designed by Scarpa and carried out by Roberto Calandra, with whom the Venetian maestro enjoyed a complicated a…
Memory and presence of thólos in architecture
2019
Il thòlos, architettura di pietra dall’origine antichissima (probabilmente greco-arcaica, quindi etrusca e poi romana) è diffuso nell’intero bacino mediterraneo in territori anche distanti (Grecia, Armenia, Cappadocia, Iran, Tunisia, Italia); la Sicilia ne conserva più di ogni altro (la Gurfa di Alia, nelle campagne interne dell’Isola, è la più grande del Mediterraneo) e, nel loro insieme, rappresentano la memoria di epoche mitiche e di personaggi favolosi come Dedalo. Nel loro insieme i thòloi costruiscono una trama di città invisibili in cui si coniugano strategie progettuali-costruttive che dall’antichità sono giunte sino a noi: quasi sempre scavate dentro montagne (luoghi di per sé sacr…
Standard mechanical testing is inadequate for the mechanical characterisation of shape-memory alloys: Source of errors and a new corrective approach
2022
Thanks to its unique behaviour characterised by a superelastic response, Nitinol has now become the material of preference in a number of critical applications, especially in the area of medical implants. However, the reversible phase transformation producing its exceptional comportment is also responsible for a number of phenomena that make its mechanical characterisation particularly complex, by hindering the assumptions at the very basis of common uniaxial tensile testing. This necessarily reduces the level of safety and design optimization of current applications, which rely on incorrect mechanical parameters. In this study, the spurious effects introduced by the unconventional material…
Forecasting energy output of a solar power plant in curtailment condition based on LSTM using P/GHI coefficient and validation in training process, a…
2022
This study presents how to improve the short-term forecast of photovoltaic plant's output power by applying the Long Short-Term Memory, LSTM, neural networks for industrial-scale solar power plants in Vietnam under possible curtailment operation. Since the actual output power does not correspond to the available power, new techniques (Global Horizontal Irradiance - GHI interval division, P/GHI factor addition (P - Power)) have been designed and applied for processing errors and missing data. The prediction model (LSTM network, structure of hidden layers, number of nodes) has been developed by the authors in a previous work. In this new version of the model, the training technique is improve…
A Cognitive Robotics Implementation of Global Workspace Theory for Episodic Memory Interaction with Consciousness
2023
Abstract—Artificial general intelligence revived in recent years after people achieved significant advances in machine learning and deep learning. This leads to the thinking of how real intelligence could be created. Consciousness theories believe that general intelligence is essentially conscious, yet no universal definition is agreed upon. In this work, Global Workspace Theory is implemented and integrated with crucial cognitive components. With the focus on episodic memory and inspiration from the nature of episodic memory in psychology and neuroscience, the episodic memory component is implemented within the Global Workspace framework. In our experiment, the robotic agent operates in a …