The contribution of working memory to language comprehension: differential effect of aphasia type

Ivanova, Maria V.; Dragoy, Olga; Kuptsova, S. V.; Ulicheva, Anastasia; Laurinavichyute, Anna

doi:10.1080/02687038.2014.975182

Cited by 24 publications

(11 citation statements)

References 60 publications

(110 reference statements)

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“…Executive control abilities play an important role in supporting specific language functions, such as the relationship between updating and sentence comprehension, or inhibition and lexical retrieval (Hussey & Novick, 2012;Ivanova et al, 2015;Jefferies, Patterson, & Ralph, 2008;Novick et al, 2010;Ye & Zhou, 2009). Therefore, it is important to measure executive control using specific and targeted tasks, tapping into each of these subdomains.…”

Section: Are Different Domains Of Executive Control More Vulnerable Imentioning

confidence: 99%

“…The neural networks that underlie executive control abilities are highly distributed across frontal, parietal and subcortical structures bilaterally (Alvarez & Emory, 2006;Duncan & Owen, 2000;Nee, Wager, & Jonides, 2007;Wager et al, 2005). Consequently, there is both overlap and divergence between the executive control and language networks (Woolgar, Duncan, Manes, & Fedorenko, 2018;Ye & Zhou, 2009) and it is likely that some executive control abilities play an important role in supporting some specific language functions including lexical access, sentence comprehension, and semantic cognition (Hussey & Novick, 2012;Ivanova, Dragoy, Kuptsova, Ulicheva, & Laurinavichyute, 2015;Jefferies & Lambon Ralph, 2006;Novick, Trueswell, & Thompson-Schill, 2010;Pompon, McNeil, Spencer, & Kendall, 2015). As such, the executive control network is vulnerable to lesions associated with aphasia (Keil & Kaszniak, 2002) with previous neuropsychological studies reporting deficits in executive control abilities in acute (El Hachioui et al, 2014;Seniów, Litwin, & Leśniak, 2009) and chronic (Purdy, 2002) aphasia.…”

Section: Introductionmentioning

confidence: 99%

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Executive control in frontal lesion aphasia: Does verbal load matter?

2019

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Executive control impairments in aphasia resulting from frontal lesions are expected, given that integrity of frontal regions is critical to executive control task performance. Yet the consistency of executive control impairments in aphasia is poorly understood. This is due to previous studies using only a brief set of measures or failing to account for the high language processing demands of many executive control tasks. This study investigated performance across a series of specific and broad executive control task, whilst comparing differences between low or high verbal task versions. Ten participants with aphasia secondary to left inferior frontal lesions and fifteen age matched controls completed a battery of verbal and low verbal executive control tasks tapping into the three core domains of inhibiting, switching, and updating of working memory. For both controls and participants with aphasia, there was no consistent influence of verbal load on either reaction time or accuracy performance. When compared to controls, participants with aphasia demonstrate a general slowing of responses across all reaction time tasks, and are less accurate on switching and updating tasks. These findings do suggest that language processing is not essential for executive control task performance, given that verbal load does not matter. Furthermore, tasks which involve holding multiple sources of information in mind, such as during switching or updating, are particularly vulnerable in aphasia.

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Section: Are Different Domains Of Executive Control More Vulnerable Imentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Executive control in frontal lesion aphasia: Does verbal load matter?

2019

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“…Specifically, the degree of aphasia severity predicted impaired performance on supposedly non-verbal tasks such as problem-solving and executive functioning (Baldo, Paulraj, Curran, & Dronkers, 2015). Working memory was found to be related to language abilities, particularly comprehension, in aphasic individuals (Ivanova, Dragoy, Kuptsova, Ulicheva, & Laurinavichyute, 2015; Sung et al, 2009), and Riès and colleagues have shown the effects of cognitive control demands on word selection (Riès, Karzmark, Navarrete, Knight, & Dronkers, 2015). Such new findings strongly suggest that language cannot be studied in isolation, as it has strong connections with other brain networks supporting higher-level cognition.…”

Section: Language Research In the Late 20th Century And Beyondmentioning

confidence: 99%

What Do Language Disorders Reveal about Brain–Language Relationships? From Classic Models to Network Approaches

Dronkers

Ivanova

Baldo

2017

J Int Neuropsychol Soc

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Studies of language disorders have shaped our understanding of brain-language relationships over the last two centuries. This article provides a review of this research and how our thinking has changed over the years regarding how the brain processes language. In the 19th century, a series of famous case studies linked distinct speech and language functions to specific portions of the left hemisphere of the brain, regions that later came to be known as Broca's and Wernicke's areas. One hundred years later, the emergence of new brain imaging tools allowed for the visualization of brain injuries in vivo that ushered in a new era of brain-behavior research and greatly expanded our understanding of the neural processes of language. Toward the end of the 20th century, sophisticated neuroimaging approaches allowed for the visualization of both structural and functional brain activity associated with language processing in both healthy individuals and in those with language disturbance. More recently, language is thought to be mediated by a much broader expanse of neural networks that covers a large number of cortical and subcortical regions and their interconnecting fiber pathways. Injury to both grey and white matter has been seen to affect the complexities of language in unique ways that have altered how we think about brain-language relationships. The findings that support this paradigm shift are described here along with the methodologies that helped to discover them, with some final thoughts on future directions, techniques, and treatment interventions for those with communication impairments. (JINS, 2017, 23, 741-754)

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“…In PWA, numerous researchers have reported limited working memory capacity (e.g., Caspari, Parkinson, LaPointe, & Katz, 1998; Ivanova, Dragoy, Kuptsova, Ulicheva & Laurinavichyute, 2015; Martin, Shelton, & Yaffee, 1994; Tompkins, Bloise, Timko & Baumgaertner, 1994). One study found that the relationship between working memory and comprehension was strong only in nonfluent aphasia, but not in fluent aphasia, suggesting a three-way interaction between comprehension, working memory and fluency (Ivanova et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…One study found that the relationship between working memory and comprehension was strong only in nonfluent aphasia, but not in fluent aphasia, suggesting a three-way interaction between comprehension, working memory and fluency (Ivanova et al, 2015). As is the case with most PWA research reviewed in this paper, fluency was not measured, but was inferred from aphasia subtype.…”

Section: Introductionmentioning

confidence: 99%

Investigating the origin of nonfluency in aphasia: A path modeling approach to neuropsychology

Nozari

Faroqi‐Shah

2017

Cortex

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A major challenge in understanding the origin of clinical symptoms in neuropsychological impairments is capturing the complexity of the underlying cognitive structure. This paper presents a practical guide to path modeling, a statistical approach that is well-suited for modeling multivariate outcomes with a multi-factorial origin. We discuss a step-by-step application of such a model to the problem of nonfluency in aphasia. Individuals with aphasia are often classified into fluent and nonfluent groups for both clinical and research purposes, but despite a large body of research on the topic, the origin of nonfluency remains obscure. We propose a model of nonfluency inspired by the psycholinguistic approach to sentence production, review several bodies of work that have independently suggested a relationship between fluency and various elements in this model, and implement it using path modeling on data from 112 individuals with aphasia from the AphasiaBank. The results show that word production, comprehension, and working memory deficits all contribute to nonfluency, in addition to syntactic impairment which has a strong and direct impact on fluency. More generally, we demonstrate that a path model is an excellent tool for exploring complex neuropsychological symptoms such as nonfluency.

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The contribution of working memory to language comprehension: differential effect of aphasia type

Cited by 24 publications

References 60 publications

Executive control in frontal lesion aphasia: Does verbal load matter?

Executive control in frontal lesion aphasia: Does verbal load matter?

What Do Language Disorders Reveal about Brain–Language Relationships? From Classic Models to Network Approaches

Investigating the origin of nonfluency in aphasia: A path modeling approach to neuropsychology

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