نتایج جستجو برای: working memory wm

تعداد نتایج: 439267  

Journal: :Psychonomic bulletin & review 2010
Jason M Chein Alexandra B Morrison

In the present study, a novel working memory (WM) training paradigm was used to test the malleability of WM capacity and to determine the extent to which the benefits of this training could be transferred to other cognitive skills. Training involved verbal and spatial versions of a complex WM span task designed to emphasize simultaneous storage and processing requirements. Participants who comp...

2014
Rebecca M. Foerster Elena Carbone Werner X. Schneider

Evidence for long-term memory (LTM)-based control of attention has been found during the execution of highly practiced multi-step tasks. However, does LTM directly control for attention or are working memory (WM) processes involved? In the present study, this question was investigated with a dual-task paradigm. Participants executed either a highly practiced visuospatial sensorimotor task (spee...

2013
Tiziano Colibazzi Bruce E. Wexler Ravi Bansal Xuejun Hao Jun Liu Juan Sanchez-Peña Cheryl Corcoran Jeffrey A. Lieberman Bradley S. Peterson

BACKGROUND Although schizophrenia has been associated with abnormalities in brain anatomy, imaging studies have not fully determined the nature and relative contributions of gray matter (GM) and white matter (WM) disturbances underlying these findings. We sought to determine the pattern and distribution of these GM and WM abnormalities. Furthermore, we aimed to clarify the contribution of abnor...

Journal: :Behavioural brain research 2010
Christoph Bledowski Jochen Kaiser Benjamin Rahm

Working memory (WM) constitutes a fundamental aspect of human cognition. It refers to the ability to keep information active for further use, while allowing it to be prioritized, modified and protected from interference. Much research has addressed the storage function of WM, however, its 'working' aspect still remains underspecified. Many operations that work on the contents of WM do not appea...

Journal: :Psychiatry research 2009
Jared Xavier Van Snellenberg

Patients with schizophrenia exhibit substantial deficits in both working memory (WM) and long-term memory (LTM) tasks. While these two forms of memory are generally viewed as distinct, recent evidence from healthy subjects has challenged the robustness of the double-dissociation between these two types of memory. In light of an emerging view of WM and LTM as being subserved by a largely overlap...

Journal: :Memory 2001
U M Hutton J N Towse

In the current literature, empirical and conceptual distinctions have been drawn between a more or less passive short-term memory (STM) system and a more dynamic working memory (WM) system. Distinct tasks have been developed to measure their capacity and research has generally shown that, for adults, WM, and not STM, is a reliable predictor of general cognitive ability. However, the locus of th...

Journal: :Psychological medicine 2015
H Karbasforoushan B Duffy J U Blackford N D Woodward

BACKGROUND Processing speed predicts functional outcome and is a potential endophenotype for schizophrenia. Establishing the neural basis of processing speed impairment may inform the treatment and etiology of schizophrenia. Neuroimaging investigations in healthy subjects have linked processing speed to brain anatomical connectivity. However, the relationship between processing speed impairment...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Fiona McNab Peter Zeidman Robb B Rutledge Peter Smittenaar Harriet R Brown Rick A Adams Raymond J Dolan

A weakened ability to effectively resist distraction is a potential basis for reduced working memory capacity (WMC) associated with healthy aging. Exploiting data from 29,631 users of a smartphone game, we show that, as age increases, working memory (WM) performance is compromised more by distractors presented during WM maintenance than distractors presented during encoding. However, with incre...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2012
David Soto Dafydd Llewelyn Juha Silvanto

Human attention may be guided by representations held in working memory (WM) and also by priming from implicit memory. Neurophysiological data suggest that WM and priming may be associated with distinct neural mechanisms, but this prior evidence is only correlative. Furthermore, the role of the visual cortex in attention biases from memory remains unclear, because most previous studies conflate...

Journal: :Stress 2015
Matias M Pulopulos Vanesa Hidalgo Mercedes Almela Sara Puig-Perez Carolina Villada Alicia Salvador

Several studies have shown that acute stress affects working memory (WM) in young adults, but the effect in older people is understudied. As observed in other types of memory, older people may be less sensitive to acute effects of stress on WM. We performed two independent studies with healthy older men and women (from 55 to 77 years old) to investigate the effects of acute stress (Trier Social...

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