Search results for "Memory"
showing 10 items of 2004 documents
Interference of left and right cerebellar rTMS with procedural learning.
2004
Abstract Increasing evidence suggests cerebellar involvement in procedural learning. To further analyze its role and to assess whether it has a lateralized influence, in the present study we used a repetitive transcranial magnetic stimulation interference approach in a group of normal subjects performing a serial reaction time task. We studied 36 normal volunteers: 13 subjects underwent repetitive transcranial magnetic stimulation on the left cerebellum and performed the task with the right (6 subjects) or left (7 subjects) hand; 10 subjects underwent repetitive transcranial magnetic stimulation on the right cerebellum and performed the task with the hand ipsilateral (5 subjects) or contral…
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…
Activity typologies as a design model for the ubiquitous detection of daily routines
2018
Emerging technologies open up new visions and business potential for systems design and development in the areas of wellbeing and health. New technologies enable the detection of human performance and early changes in physical and cognitive functioning, making it possible to monitor an older person’s wellbeing. This kind of technology or service sets significant requirements for design, as design concepts must be able to capture the complexity of people’s daily lives in terms of activities and environments. Technology itself is “blind” unless designers can adapt it to human life. There is thus a distinct need for comprehensive design and development models that generate adequate human requi…
An Encoding in Metaheuristics for the Minimum Communication Spanning Tree Problem
2009
Problem-specific encodings can improve the performance of metaheuristics, such as genetic algorithms or simulated annealing. This paper studies the link-biased (LB) encoding, which is a tree representation, and applies metaheuristics using this encoding to the minimum communication spanning tree (MCST) problem. Given the communication requirements of the nodes, the MCST problem seeks a communication spanning tree with minimum total cost. Optimal solutions for MCST problems are similar to minimum spanning trees (MSTs), and the LB encoding exploits this property by encoding trees similar to MSTs with higher probability. The paper investigates how to systematically design problem-specific enc…
Construction and Implementation of LR(1) Parsers
1990
This chapter is devoted to the practical issues involved in the construction and use of deterministic LR(1) parsers. We shall show how the practical versions of LR (1) parsers, most notably the LALR (1) parsers, can be constructed efficiently, and we shall present methods for encoding LR(1) parsers as efficient RAM programs. Two versions of RAM program implementation are considered: in the first implementation the parsing program is table-driven, that is, the rules of the parser are encoded in a two-dimensional array which is simulated by a program body; in the other implementation the tabular information is further transformed into a set of program statements.
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…