scholarly journals The Role of Working Memory on Dual-Task Cost During Walking Performance in Childhood

2019 ◽  
Vol 10 ◽  
Author(s):  
Emanuela Rabaglietti ◽  
Aurelia De Lorenzo ◽  
Paolo Riccardo Brustio
Keyword(s):  
Working Memory ◽  
Dual Task ◽  
Dual Task Cost ◽  
Walking Performance

scholarly journals What affects the magnitude of age-related dual-task costs in working memory? The role of stimulus domain and access to semantic representations

2020 ◽  
pp. 174702182097074
Author(s):  
Agnieszka J Jaroslawska ◽  
Stephen Rhodes ◽  
Clément Belletier ◽  
Jason M Doherty ◽  
Nelson Cowan ◽  
...  
Keyword(s):  
Older Adults ◽  
Working Memory ◽  
Dual Task ◽  
Memory Task ◽  
Semantic Representations ◽  
Younger Adults ◽  
Task Effects ◽  
Concurrent Processing ◽  
Age Related

Although there is evidence that the effect of including a concurrent processing demand on the storage of information in working memory is disproportionately larger for older than younger adults, not all studies show this age-related impairment, and the critical factors responsible for any such impairment remain elusive. Here we assess whether domain overlap between storage and processing activities, and access to semantic representations, are important determinants of performance in a sample of younger and older adults ( N = 119). We developed four versions of a processing task by manipulating the type of stimuli involved (either verbal or non-verbal) and the decision that participants had to make about the stimuli presented on the screen. Participants either had to perform a spatial judgement, in deciding whether the verbal or non-verbal item was presented above or below the centre of the screen, or a semantic judgement, in deciding whether the stimulus refers to something living or not living. The memory task was serial-ordered recall of visually presented letters. The study revealed a large increase in age-related memory differences when concurrent processing was required. These differences were smaller when storage and processing activities both used verbal materials. Dual-task effects on processing were also disproportionate for older adults. Age differences in processing performance appeared larger for tasks requiring spatial decisions rather than semantic decisions. We discuss these findings in relation to three competing frameworks of working memory and the extant literature on cognitive ageing.

Cognitive Reserve Moderates Associations Between Walking Performance Under Single and Dual-Task Conditions and Incident Mobility Impairment in Older Adults

2021 ◽  
Author(s):  
Catherine O’Brien ◽  
Roee Holtzer
Keyword(s):  
Older Adults ◽  
Dual Task ◽  
Cognitive Reserve ◽  
Mobility Impairment ◽  
Gait Performance ◽  
Increased Risk ◽  
Wide Range ◽  
Walking Performance ◽  
Incident Cases

Abstract Background Among older adults, walking performance is a reliable indicator of adverse health outcomes including incident mobility impairment. Whereas, attention and executive functions have been implicated in cognitive control of locomotion, much less is known about the role of Cognitive Reserve (CR) in predicting mobility impairments among older adults. Specifically, whether CR moderates the relationship between gait performance and incident mobility impairment, has not been reported. To address this gap in the literature, we examined whether gait performance under Single-Task-Walk (STW) and Dual-Task-Walk (DTW) conditions predicted incident mobility impairment and whether CR moderated this relationship. Methods Participants were 176 (mean age=75.57; %female=53) older adults with baseline SPPB scores of 10-12. Participants completed neuropsychological testing, the SPPB, and a dual-task walking protocol. CR was evaluated using the Wide Range Achievement Test 3 rd edition (WRAT-3). Participants were followed for three years; individuals whose SPPB scores declined below 10 were defined as incident cases of mobility impairment (n=42). Results Moderation analyses revealed significant interaction effects of CR with walking velocity under STW (b = 0.09, 95% CI [0.01, 0.17], z = 2.30, p = 0.02), and DTW (b = 0.10, 95% CI [0.02, 0.17], z = 2.55, p = 0.01) conditions wherein slower gait predicted increased risk of incident mobility impairment among individuals with lower CR. Conclusion These findings extend knowledge about the interrelation of cognitive and mobility functions, revealing the critical role of CR in identifying older adults at risk of developing incident mobility impairment.

scholarly journals Dual task gait deteriorates gait performance in cervical dystonia patients: a pilot study

2021 ◽  
Author(s):  
Oscar Crisafulli ◽  
Carlo Trompetto ◽  
Luca Puce ◽  
Lucio Marinelli ◽  
Stefania Costi ◽  
...  
Keyword(s):  
Dual Task ◽  
Cervical Dystonia ◽  
Control Mechanisms ◽  
Balance Performance ◽  
Gait Performance ◽  
Gait Parameters ◽  
Dual Task Cost ◽  
Spatiotemporal Parameters ◽  
Stance Time ◽  
Walking Performance

AbstractDay-to-day walking-related activities frequently involve the simultaneous performance of two or more tasks (i.e., dual task). Dual task ability is influenced by higher order cognitive and cortical control mechanisms. Recently, it has been shown that the concomitant execution of an attention-demanding task affected postural control in subject with cervical dystonia (CD). However, no study has investigated whether dual tasking might deteriorate gait performance in CD patients. To investigate whether adding a concomitant motor and cognitive tasks could affect walking performance in CD subjects.17 CD patients and 19 healthy subjects (HS) participated in this pilot case–control study. Gait performance was evaluated during four walking tasks: usual, fast, cognitive dual task and obstacle negotiation. Spatiotemporal parameters, dual-task cost and coefficients of variability (CV%) were measured by GaitRite® and were used to detect differences between groups. Balance performance was also assessed with Mini-BEST and Four Step Square tests. In CD participants, correlation analysis was computed between gait parameters and clinical data. Significant differences in complex gait and balance performance were found between groups. CD patients showed lower speed, longer stance time and higher CV% and dual-task cost compared to HS. In CD, altered gait parameters correlated with balance performance and were not associated with clinical features of CD. Our findings suggest that complex walking performance is impaired in patients with CD and that balance and gait deficits might be related

scholarly journals Child-Like Adults: Dual-Task Effects on Collective vs. Distributive Sentence Interpretations

2021 ◽  
Vol 12 ◽  
Author(s):  
Anna M. B. de Koster ◽  
Petra Hendriks ◽  
Jennifer K. Spenader
Keyword(s):  
Working Memory ◽  
Dual Task ◽  
Cognitive Resources ◽  
Response Patterns ◽  
Conversational Implicature ◽  
Recent Proposal ◽  
Task Effects ◽  
Collective Preference ◽  
Memory Resources

In this work, we consider a recent proposal that claims that the preferred interpretation of sentences containing definite plural expressions, such as “The boys are building a snowman,” is not determined by semantic composition but is pragmatically derived via an implicature. Plural expressions can express that each member of a group acts individually (distributive interpretation) or that the group acts together (collective interpretation). While adults prefer collective interpretations for sentences that are not explicitly marked for distributivity by the distributive marker each, children do not show this preference. One explanation is that the adult collective preference for definite plurals arises due to a conversational implicature. If implicature calculation requires memory resources, children may fail to calculate the implicature due to memory limitations. This study investigated whether loading Dutch-speaking adults' working memory, using a dual task, would elicit more child-like distributive interpretations, as would be predicted by the implicature account. We found that loading WM in adults did lead to response patterns more similar to children. We discuss whether our results offer a plausible explanation for children's development of an understanding of distributivity and how our results relate to recent debates on the role of cognitive resources in implicature calculation.

A Role for Spatial and Nonspatial Working Memory Processes in Visual Search

2008 ◽  
Vol 55 (5) ◽  
pp. 301-312 ◽  
Author(s):  
Elaine J. Anderson ◽  
Sabira K. Mannan ◽  
Geraint Rees ◽  
Petroc Sumner ◽  
Christopher Kennard
Keyword(s):  
Working Memory ◽  
Visual Search ◽  
Retention Interval ◽  
Dual Task ◽  
Search Task ◽  
Spatial Working Memory ◽  
Memory Load ◽  
Memory Processes ◽  
Task Conditions

Searching a cluttered visual scene for a specific item of interest can take several seconds to perform if the target item is difficult to discriminate from surrounding items. Whether working memory processes are utilized to guide the path of attentional selection during such searches remains under debate. Previous studies have found evidence to support a role for spatial working memory in inefficient search, but the role of nonspatial working memory remains unclear. Here, we directly compared the role of spatial and nonspatial working memory for both an efficient and inefficient search task. In Experiment 1, we used a dual-task paradigm to investigate the effect of performing visual search within the retention interval of a spatial working memory task. Importantly, by incorporating two working memory loads (low and high) we were able to make comparisons between dual-task conditions, rather than between dual-task and single-task conditions. This design allows any interference effects observed to be attributed to changes in memory load, rather than to nonspecific effects related to “dual-task” performance. We found that the efficiency of the inefficient search task declined as spatial memory load increased, but that the efficient search task remained efficient. These results suggest that spatial memory plays an important role in inefficient but not efficient search. In Experiment 2, participants performed the same visual search tasks within the retention interval of visually matched spatial and verbal working memory tasks. Critically, we found comparable dual-task interference between inefficient search and both the spatial and nonspatial working memory tasks, indicating that inefficient search recruits working memory processes common to both domains.

scholarly journals Working Memory in Writing: Empirical Evidence From the Dual-Task Technique

2004 ◽  
Vol 9 (1) ◽  
pp. 32-42 ◽  
Author(s):  
Thierry Olive
Keyword(s):  
Working Memory ◽  
Resource Allocation ◽  
Dual Task ◽  
Short Term ◽  
Writing Processes ◽  
Short Term Storage ◽  
Dual Task Paradigm ◽  
The Relationship ◽  
Term Storage

The dual-task paradigm recently played a major role in understanding the role of working memory in writing. By reviewing recent findings in this field of research, this article highlights how the use of the dual-task technique allowed studying the processing and short-term storage functions of working memory involved in writing. With respect to processing functions of working memory (namely, attentional and executive functions), studies investigated resource allocation, step-by-step management, and parallel coordination of the writing processes. With respect to short-term storage in working memory, experiments mainly attempted to test Kellogg's (1996) proposals on the relationship between the writing processes and the slave systems of working memory. The dual-task technique proved fruitful in understanding the relationship between writing and working memory because researchers exploited its major advantage, namely, its flexibility.

scholarly journals The state of memory-matched distractor in working memory influence the visual attention

PLoS ONE ◽  
2020 ◽  
Vol 15 (12) ◽  
pp. e0242721
Author(s):  
Quanshan Long ◽  
Ting Luo ◽  
Sheng Zhang ◽  
Yuanling Jiang ◽  
Na Hu ◽  
...  
Keyword(s):  
Working Memory ◽  
Visual Attention ◽  
Cognitive Control ◽  
Sensory Processing ◽  
Dual Task ◽  
The State ◽  
Attentional Guidance ◽  
Match To Sample ◽  
Multivariate Pattern

Information in working memory (WM) can guide visual attention towards matched features. While recent work has suggested that cognitive control can act upon WM guidance of visual attention, little is known about how the state of memorized items retaining in WM contribute to its influence over attention. Here, we disentangle the role of inhibition and maintenance on WM-guided attention with a novel delayed match-to-sample dual-task. The results showed that active inhibition facilitated searching by diminishing sensory processing and deterring attentional guidance, indexed by an attenuated P1 amplitude and unaffected N2pc amplitude, respectively. By contrast, active maintenance impaired searching by attentional guidance while sensory processing remained unimpaired, indexed by an enhanced N2pc amplitude and unchanged P1 amplitude, respectively. Furthermore, multivariate pattern analyses could sucessfully decode maintenance and inhibition, suggesting that two states differed in modulating visual attention. We propose that remembered contents may play an anchoring role for attentional guidance, and the state of those contents retaining in WM may directly influence the shifting of attention. The maintenance could guide attention by accessing input information, while the inhibition could deter the shifting of attention by suppressing sensory processing. These findings provide a possible reinterpretation of the influence of WM on attention.

Exploring the Role of Working Memory in Dynamic Social Cue Decoding Using Dual Task Methodology

2007 ◽  
Vol 31 (2) ◽  
pp. 137-152 ◽  
Author(s):  
Louise H. Phillips ◽  
Mary Tunstall ◽  
Shelley Channon
Keyword(s):  
Working Memory ◽  
Dual Task ◽  
Social Cue

scholarly journals The role of working memory for task-order coordination in dual-task situations

2021 ◽  
Author(s):  
Sebastian Kübler ◽  
Tilo Strobach ◽  
Torsten Schubert
Keyword(s):  
Working Memory ◽  
Dual Task ◽  
Preliminary Evidence ◽  
Order Information ◽  
Stimulus Response ◽  
Task Order ◽  
Additional Task ◽  
Per Se ◽  
Improved Performance

AbstractDual-task (DT) situations require task-order coordination processes that schedule the processing of two temporally overlapping tasks. Theories on task-order coordination suggest that these processes rely on order representations that are actively maintained and processed in working memory (WM). Preliminary evidence for this assumption stems from DT situations with variable task order, where repeating task order relative to the preceding trials results in improved performance compared to changing task order, indicating the processing of task-order information in WM between two succeeding trials. We directly tested this assumption by varying WM load during a DT with variable task order. In Experiment 1, WM load was manipulated by varying the number of stimulus–response mappings of the component tasks. In Experiment 2A, WM load was increased by embedding an additional WM updating task in the applied DT. In both experiments, the performance benefit for trials with repeated relative to trials with changed task order was reduced under high compared to low WM load. These results confirm our assumption that the processing of the task-order information relies on WM resources. In Experiment 2B, we tested whether the results of Experiment 2A can be attributed to introducing an additional task per se rather than to increased WM load by introducing an additional task with a low WM load. Importantly, in this experiment, the processing of order information was not affected. In sum, the results of the three experiments indicate that task-order coordination relies on order information which is maintained in an accessible state in WM during DT processing.

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