Search results for "working memory"

Developmental pathways of language development : a longitudinal predictive study from prelinguistic stage to outcome at school entry

2017

This research focused on the pathways of development during the prelinguistic stage and from prelinguistic development to later language ability. The first goal was to follow and describe the development of several prelinguistic communication skills during the first two years of life (Studies I and II). The second goal was to examine the predictive relations between this development and language ability and difficulties, as well as memory, up to school age (Studies I, II, and III). The third goal evaluated the feasibility of parental screening in identifying children at risk for language and communication difficulties (Studies I, II, and III). Prelinguistic skills were followed with a paren…

Apprendimento, memoria, oblio

2012

Le teorie sulla memoria tengono conto sia della struttura della memoria che dei processi operanti al suo interno. Con il termine struttura ci si riferisce al modo in cui è organizzata la memoria, mentre con il termine processi si fa riferimento alle attività che si verificano all'interno della memoria. Apprendimento e memoria implicano una serie di stadi distinti. Il primo stadio noto come codifica, si riferisce a tutti quei fenomeni che hanno luogo durante la presentazione dell'informazione da ricordare. Il secondo stadio riguarda l'immagazzinamento delle informazioni come conseguenza del processo di codifica. Il terzo e ultimo stadio è il recupero delle informazioni immagazzinate.

Time estimation in Alzheimer and the role of the central executive

2004

The aim of this study was to evaluate the role of short-term memory and attention in time estimation. For this purpose we studied prospective time verbal estimation in 21 patients with Alzheimer's disease (AD), and compared their performance with that of 21 matched normal controls in two different conditions: during a digit span task and during an attentional task. Results showed that the performance of AD patients was significantly worse than that of the controls; the interaction between group and condition was significant. We suggest a role of attentional-executive functions in prospective time estimation.

Phonological working memory and L2 knowledge : Finnish children learning English

2012

Mejorando la comprensión lectora: Desde la intervención metacognitiva en estrategias a la intervención en los procesos ejecutivos de la memoria opera…

2013

Many students may read fluently but have difficulties constructing meaning from texts. Difficulties with reading comprehension have many implications at school. In particular, problems understanding texts interfere with studying and learning from text. Reading comprehension has improved in the last 30 years focusing on intervention programs that work with strategies in which metacog-nition plays a crucial role. However, recent years have seen relevant advances in the study of the relationship between working memory (WM), particularly executive processes, and reading comprehension. In this paper, we present how the last 20 years of our research has evolved regarding metacognitive interventio…

视觉工作记忆存储的表征单位 [The Representation Unit of Visual Working Memory]

2022

The visual working memory is a limited storage system in which people could flexibly process the representations to complete the task. Among studies on the capacity of visual working memory, the representation unit is a prior subject. Previous research employs the change-detection paradigm and the recall paradigm to explore the nature of representations when features of diverse dimensions and different-level features of the same dimension are stored in the visual working memory. These studies elicit two binary hypotheses: the object-based representation hypothesis backs that those diverse features are bound on the object and form a whole, while the feature-based representation hypothesis su…

Visual working memory resource allocation mechanism in consolidation and maintenance phase

2018

Visual working memory (VWM) is a system for actively maintaining visual information to meet the needs of an ongoing task. It allows individuals to store visual input information from a complex outside environment and provides storage space as an information buffer platform to help integrate information into a continuous visual experience. This research examined the consolidation and maintenance phase of the VWM resource allocation mechanism. Four aspects of this issue were investigated. First, resource allocation in VWM consolidation was investigated for different materials, and it was determined whether VWM resources were allocated in a serial manner for orientation materials but in a limi…

The mechanism of retro-cue effect in visual working memory : Cognitive phase separation

2020

Retro-cue effect (RCE) refers to the phenomenon that individuals can use retro-cues to improve their visual working memory (VWM) performance of target items after memory stimuli disappear. To explain the mechanism of RCE in VWM, five different hypotheses have been proposed by previous studies: the hypothesis of enhancing target representations, the hypothesis of forgetting non-target representations, the hypothesis of preventing memory degradation, the hypothesis of preventing interference from probe array and the hypothesis of cognitive phase separation. Although RCE has been repeatedly observed in previous studies, the mechanism of RCE remains unclear. In this study, we conducted three ex…

视觉工作记忆中回溯线索效应的影响因素 [The Influencing Factors of Retro-Cue Effect in Visual Working Memory]

2022

The visual working memory is a temporary storage system, which encodes, maintains and retrieves visual information. The researchers have found that adding retro-cues to the maintenance phase of memory leads to changes in participants’ memory performance, which is the retro-cue effect. The magnitude of the retro-cue effect is not set in stone, but changes with the changes of its influencing factors. However, there is no study to summarize the influencing factors of the retro-clue effect. This paper looked into the articles related to the study of the retro-cue effect and summarized the influencing factors of the retro-cue effect: memory items, maintenance interval time, interference in maint…

Negative emotional state modulates visual working memory in the late consolidation phase

2020

Although a considerable literature has grown up around the interactions between emotional state and visual working memory (VWM) performance, the mechanism underlying the impact of the negative emotional state on VWM remains unclear. The present study aimed to test whether the influence of emotional state is related to the early phase or late phase of VWM consolidation process. Across three experiments, we found that the negative emotional state did not affect VWM performance when the presentation time of stimuli was short. However, when the presentation time was long, the negative emotional state increased the VWM precision and reduced the VWM number. According to the two-phase model propos…