Search results for "Memory."

A Guide to Designing a Memory fMRI Paradigm for Pre-surgical Evaluation in Temporal Lobe Epilepsy

2020

There has been increasing interest in the clinical and experimental use of memory functional Magnetic Resonance Imaging (fMRI). The 2017 American Academy of Neurology practice guidelines on the use of pre-surgical cognitive fMRI suggests that verbal memory fMRI could be used to lateralize memory functions in people with Temporal Lobe Epilepsy (TLE) and should be used to predict post-operative verbal memory outcome. There are however technical and methodological considerations, to optimize both the sensitivity and specificity of this imaging modality. Below we discuss these constraints and suggest recommendations to consider when designing a memory fMRI paradigm.

Empirical Autotuning of Two-level Parallel Linear Algebra Routines on Large cc-NUMA Systems

2012

In large cc-NUMA systems the efficient use of the different levels of the memory hierarchy is not an easy task, and the performance of multithreading implementations of the libraries decreases when the number of cores used increases, so producing an important lost of efficiency. To alleviate this problem, routines with multilevel parallelism can be developed by combining OpenMP and BLAS parallelism. In that way, higher performance can be achieved, but it is necessary to develop some autotuning technique for the appropriate selection of the number of threads to use at each level. The selection can be made through theoretical models of the execution time or some installation methodology. This…

2017

Moving and acting underwater within recreational or occupational activities requires intact executive functions, since they subserve higher cognitive functions such as successful self-regulation, coping with novel situations, and decision making; all of which could be influenced by nitrogen narcosis due to elevated partial pressure under water. However, specific executive functions that could provide a differentiated view on humans’ cognitive performance ability have not yet been systematically analyzed in full-water immersion, which is a research gap addressed within this approach to contribute to a better understanding of nitrogen narcosis. In this study, 20 young, healthy, and certified …

Different sensory aspects of a food are not remembered with equal acuity

2009

International audience; In the present study, food memory for three sensory aspects involved in food perception, taste, texture and aroma, is compared. Participants received a lunch including a custard dessert (target) under incidental learning condition. One day later, participants were presented with samples identical to the target and with distractors varying either in sweetness, thickness or cherry aroma. Memory was assessed by an absolute recognition question (“Did you eat this sample yesterday?”) and by relative questions (“Is this sample less, equal or more sweet than the sample you ate yesterday?”). Results showed better memory performance for sweetness than for the two other sensor…

“Following in the footprint of the teacher”: A methodological approach for the treatment of memory repression in the class

2017

La “represión de la memoria” es un fenómeno que reconstruye y tergiversa los recuerdos en torno al periodo de ciudadanía activa anterior a la Guerra Civil Española y en torno al brutal proceso represivo del régimen franquista, afectando así a la propia configuración de la sociedad actual. En este trabajo se realiza una diagnosis de este fenómeno en el espacio educativo y se presenta una propuesta didáctica que luche contra esta represión llevando la propia memoria al aula como objeto de estudio e intentando convertir a los alumnos en investigadores y, lo más importante, en ciudadanos críticos The “repressed memory” is a phenomenon that reconstructs and distorts memories around the active ci…

How to blend language and ICT in the didactics of scientific translation

2014

New information and communication technologies (ICT) have burst into all spheres of our lives, modifying them in ways inconceivable barely 10 years ago. Generally speaking, these modifications have enhanced interaction processes (telecommunications), work and human production (task automation). The field of professional translation has been particularly affected by this technological revolution and has led to new research, professional and didactic paradigms, known as Automatic Translation and Computer Aided Translation. This is the framework for our present work, which attempts to put together the development of communicative (linguistic) competences with procedural (instrumental) and eval…

Investigation of the Thermomechanical Response of Cyclically Loaded NiTi Alloys by Means of Temperature Frequency Domain Analyses

2021

Nickel–Titanium (NiTi) shape memory alloys subjected to cyclic loading exhibit reversible temperature changes whose modulation is correlated with the applied load. This reveals the presence of reversible thermomechanical heat sources activated by the applied stresses. One such source is the elastocaloric effect, accounting for the latent heat of Austenite–Martensite phase transformation. It is, however, observed that when the amplitude of cyclic loads is not sufficient to activate or further propagate this phase transformation, the material still exhibits a strong cyclic temperature modulation. The present work investigates the thermomechanical behaviour of NiTi under such low-amplitude cyc…

Association of basal forebrain volumes and cognition in normal aging.

2013

The basal forebrain cholinergic system (BFCS) is known to undergo moderate neurodegenerative alterations during normal aging and severe atrophy in Alzheimer's disease (AD). It has been suggested that functional and structural alterations of the BFCS mediate cognitive performance in normal aging and AD. But, it is still unclear to what extend age-associated cognitive decline can be related to BFCS in normal aging. We analyzed the relationship between BFCS volume and cognition using MRI and a comprehensive neuropsychological test battery in a cohort of 43 healthy elderly subjects spanning the age range from 60 to 85 years. Most notably, we found significant associations between general intell…

Characteristics of frontal and temporal cortex in relation to cognitive dysfunction in Bipolar Disorders

2011

2020

Learning to associate written letters with speech sounds is crucial for the initial phase of acquiring reading skills. However, little is known about the cortical reorganization for supporting letter-speech sound learning, particularly the brain dynamics during the learning of grapheme-phoneme associations. In the present study, we trained 30 Finnish participants (mean age: 24.33 years, SD: 3.50 years) to associate novel foreign letters with familiar Finnish speech sounds on two consecutive days (first day ​~ ​50 ​min; second day ​~ ​25 ​min), while neural activity was measured using magnetoencephalography (MEG). Two sets of audiovisual stimuli were used for the training in which the graphe…