Search results for "Working memory"

2020

Physical activity and exercise beneficially link to brain properties and cognitive functions in older adults, but the findings concerning adolescents remain tentative. During adolescence, the brain ...

Cognition and interpersonal communication: The effect of voice quality on information processing and person perception

2014

Abstract Against the backdrop of cognitive load theory (CLT) it was tested if irregular voice increases processing demands on working memory (WM). An experiment was designed to expose N = 54 participants to expository text delivered with a modal and a creaky human voice. Working memory capacity was measured by a secondary task on the visual modality. Listening to a creaky voice quality consumes more cognitive capacity as indicated by the significant decrease in secondary task performance; also, retention of information was found to be impaired. Results are explained within the framework of CLT and implications for professional communication are discussed.

MEMORIA DE TRABAJO EN NIÑOS DE EDUCACIÓN INFANTIL CON Y SIN BAJO RENDIMIENTO MATEMÁTICO

2014

Abstract:This study aims to explore working memory in preschool children with and without low mathematical performance. The sample consisted of 255 children aged 5-6 years, to whom were administered neuropsychological tests of working memory and TEDI-MATH to estimate the mathematical performance. The results highlight the capacity of verbal working memory to significantly differentiate groups of children with and without problems in 8 of the 9 analyzed mathematical domains. This factor together with visuospatial working memory differentiate the group of children at risk for mathematical learning disabilities.Keywords: working memory, preschool, math performance, mathematics learning disabil…

The inhibitory effect of long-term associative representation on working memory

2020

Studies on how long-term memory affects working memory (WM) have found that long-term memory can enhance WM processing. However, these studies only use item memory as the representation of long-term memory. In addition to item memory, associative memory is also an essential part of long-term memory. The associative memory and item memory involve different cognitive mechanisms and brain areas. The purpose of the present study was to investigate how associative memory affects WM processing. Before the WM task, participants were asked to store 16 pairs of dissimilar pictures into long-term memory. The participants would obtain the associative memory of these pairs of pictures in the long-term …

Reading changes in children and adolescents with dyslexia after transcranial direct current stimulation.

2016

Noninvasive brain stimulation offers the possibility to induce changes in cortical excitability and it is an interesting option as a remediation tool for the treatment of developmental disorders. This study aimed to investigate the effect of transcranial direct current stimulation (tDCS) on reading and reading-related skills of children and adolescents with dyslexia. Nineteen children and adolescents with dyslexia performed different reading and reading-related tasks (word, nonword, and text reading; lexical decision; phonemic blending; verbal working memory; rapid automatized naming) in a baseline condition without tDCS and after 20 min of exposure to three different tDCS conditions: left …

Attenzione e prestazione

2012

L'attenzione è uno dei processi cognitivi più complessi. È un presupposto di tutte le altre attività psichiche – memoria, percezione, apprendimento, problem solving. L'attenzione si riferisce alla selettività del processo di elaborazione. Il fatto di stare attenti implica infatti, la necessità di selezionare soltanto una porzione degli innumerevoli stimoli che possiamo percepire coi nostri sensi, guardando, toccando, ascoltando, annusando o assaggiando. L’attenzione implica il distogliere il pensiero da alcune cose per dedicarsi selettivamente ad altre. Dunque, c’è una quantità finita di cose a cui possiamo prestare attenzione nello stesso momento. Ciò accade perché il nostro cervello possi…

Association between osteocalcin and cognitive performance in healthy older adults.

2016

INTRODUCTION: cognitive deterioration and reductions of bone health coincide with increasing age. We examine the relationship between bone composition and plasma markers of bone remodelling with measures of cognitive performance in healthy adults.METHODS: this cross-sectional study included 225 old (52% women, mean age: 74.4 ± 3.3 years) and 134 young (52% women, mean age: 23.4 ± 2.7 years) adult participants from the MyoAge project. Whole body bone mineral density was measured by dual-energy X-ray absorptiometry. Blood analyses included a panel of bone-related peptides (dickkopf-1, osteoprotegerin, osteocalcin (OC), osteopontin, sclerostin, parathyroid hormone and fibroblast growth factor …

Dynamics of brain activity underlying working memory for music in a naturalistic condition

2012

Working memory (WM) is at the core of any cognitive function as it is necessary for the integration of information over time. Despite WM’s critical role in high-level cognitive functions, its implementation in the neural tissue is poorly understood. Preliminary studies on auditory WM show differences between linguistic and musical memory, leading to the speculation of specific neural networks encoding memory for music. Moreover, in neuroscience WM has not been studied in naturalistic listening conditions but rather in artificial settings (e.g., n-back and Sternberg tasks). Western tonal music provides naturally occurring motivic repetition and variation, recognizable units serving as WM tri…

Depresijas simptomu saistība ar darba atmiņu

2021

Pētījuma mērķis bija noskaidrot kādas saistības pastāv starp depresijas simptomiem un darba atmiņu. Šī darba teorētiskajā daļā tika apkopota informācija par depresijas saistībām ar darba atmiņu. Pētījuma izlase sastāv no vispārējās populācijas (N=171). Šī pētījuma ietvaros tika ievākti demogrāfiskie dati, kā arī tika izmantota jaunizveidotā Depresijas Simptomu aptauja (Vanags, 2020), kura sastāv no 65 dažādiem apgalvojumiem un ietver sevī plašu klāstu depresijas simptomu, kā arī tika izmantots Ciparu Atmiņas tests (Vanags & Ekmanis, 2018), kura mērījumi attiecināmi uz dažādiem darba atmiņas aspektiem kā uzmanības efektivitāti, darba atmiņas kapacitāti, informācijas atjaunināšana un pārslēgš…

DEFAULT MODE NETWORK AND WORKING MEMORY NETWORK DURING AN FMRI WORKING MEMORY TASK: DIFFERENCES AND CORRELATIONS WITH BEHAVIORAL PERFORMANCE

2013

INTRODUCTION Previous neuroimaging studies have shown that working memory load has marked effects on regional neural activation[1-5]. However, the mechanism through which working memory load modulates brain connectivity is still unclear. During a working memory task, two of the most involved networks are the default mode network (DMN) and the working memory network (WMN)[6-7]: the selective focus on these networks can be useful in better understanding the load effects. Spatial independent component analysis (ICA)[8] has becomes a reliable technique to investigate the networks involved during an fMRI task, as it extracts spatiotemporal patterns of neural activity maximizing spatial independe…