Distinguishing semantic control and phonological control and their role in aphasic deficits: A task switching investigation

McCall, Joshua D.; Stelt, Candace M. van der; DeMarco, Andrew T.; Dickens, J. Vivian; Dvorak, Elizabeth; Lacey, Elizabeth H.; Snider, Sarah F.; Friedman, Rhonda B.; Turkeltaub, Peter E.

doi:10.1016/j.neuropsychologia.2022.108302

Cited by 6 publications

(6 citation statements)

References 61 publications

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“…However, our finding regarding phonological control aligns with the general understanding of IS as a primarily phonological phenomenon (Alderson-Day & Fernyhough, 2015). In a recent paper, McCall et al (2022) investigated the interactions between switching ability and phonological/semantic control in healthy adults. This study found that inner speech is supported by the ability to manage phonological interference but not semantic interference, which is in line with our findings.…”

Section: Discussionsupporting

confidence: 86%

“…Next, we showed that IS ability relates to phonological control, but not semantic control, in adults with aphasia. Overall, there is more prior evidence for deficits in semantic control than for phonological control in this population, with some prior work suggesting that phonological control impairments are subtle overall (McCall et al, 2022). However, our finding regarding phonological control aligns with the general understanding of IS as a primarily phonological phenomenon (Alderson-Day & Fernyhough, 2015).…”

Section: Discussionsupporting

confidence: 78%

“…Some studies have suggested that there may be a distinction between domain-general and language-specific uses of EF (Jacquemot & Bachoud-Lévi, 2021;Kuzmina & Weekes, 2017). Recent work supports an even finer distinction within language-specific EF by showing a dissociation between phonological control, which allows one to manage phonological interference during a task, and semantic control, which allows one to manage semantic interference (McCall et al, 2022). Semantic and phonological control likely help to resolve the day-to-day linguistic competition mentioned above.…”

Section: Executive Functionmentioning

confidence: 98%

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Evidence from aphasia suggests a bidirectional relationship between inner speech and executive function

Fama,

McCall,

DeMarco

et al. 2024

Preprint

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Research over the past several decades has revealed that non-linguistic cognitive impairments can appear alongside language deficits in individuals with aphasia. One vulnerable cognitive domain is executive function, an umbrella term for the higher-level cognitive processes that allow us to direct our behavior towards a goal. Studies in healthy adults reveal that executive function abilities are supported by inner speech, the ability to use language silently in one’s head. Therefore, inner speech may mediate the connection between language and executive function deficits in individuals with aphasia.Here, we investigated whether inner speech ability links language and cognitive impairments in 59 adults with chronic, post-stroke aphasia. We used two approaches to measure inner speech: one based on internal retrieval of words and one based on internal retrieval plus silent manipulation of the retrieved phonological forms. Then, we examined relationships between these two approaches to measuring inner speech and five aspects of executive function ability: response inhibition, conflict monitoring/resolution, general task-switching ability, phonological control, and semantic control. We also looked for dissociations between inner speech ability and executive function ability.Our results show tentative relationships between inner speech and all aspects of executive function examined in the study. The most consistent relationships were found between executive function and measures of inner speech that require both retrieval and manipulation of internal representations of words (e.g., silent picture-pair rhyme judgment). We also found evidence for a double dissociation: many participants show intact executive function despite poor inner speech, and vice versa, so neither process is strictly reliant on the other. We suggest that this work provides preliminary evidence of a bidirectional relationship between inner speech and executive function: inner speech supports some aspects of executive function via internal self-cueing and certain aspects of executive function support performance on complex inner speech tasks.

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Section: Discussionsupporting

confidence: 86%

Section: Discussionsupporting

confidence: 78%

Section: Executive Functionmentioning

confidence: 98%

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Evidence from aphasia suggests a bidirectional relationship between inner speech and executive function

Fama,

McCall,

DeMarco

et al. 2024

Preprint

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“…Given that inhibition of lexically competing words may not be the central role of the DLPFC in lexical processes, it is worth revisiting the wide range of alternative roles of the DLPFC related to executive functions such as planning and working memory [24][25][26]. The finding that DLPFC activation was associated with the production of phonologically related words but the comprehension of semantically related words suggests a nuanced approach that dissociates phonological and semantic control mechanisms to some degree, (e.g., [47,48]) in contrast to domain-general accounts [49][50][51].…”

Section: Discussionmentioning

confidence: 99%

“…Some recent work may shed light on why producing phonologically but not semantically related words may have played a role in greater activation of the DLPFC. Executive control of phonological processes has been associated with the maintenance of inner speech cues in working memory in contexts with increased phonological costs, while semantic control may be more reflective of domain-general mechanisms [47,52]. Inner speech cueing is considered a performance supplementing strategy in which a phonological cue is held in working memory to facilitate the processing of an upcoming target word [52].…”

Section: Discussionmentioning

confidence: 99%

The Role of the Dorsolateral Prefrontal Cortex in the Production and Comprehension of Phonologically and Semantically Related Words

et al. 2023

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Previous studies suggest that producing and comprehending semantically related words relies on inhibitory control over competitive lexical selection which results in the recruitment of the left inferior frontal gyrus (IFG). Few studies, however, have examined the involvement of other regions of the frontal cortex, such as the dorsolateral prefrontal cortex (DLPFC), despite its role in cognitive control related to lexical processing. The primary objective of this study was to elucidate the role of the DLPFC in the production and comprehension of semantically and phonologically related words in blocked cyclic naming and picture–word matching paradigms. Twenty-one adults participated in neuroimaging with functional near-infrared spectroscopy to measure changes in oxygenated and deoxygenated hemoglobin concentrations across the bilateral frontal cortex during blocked cyclic picture naming and blocked cyclic picture–word-matching tasks. After preprocessing, oxygenated and deoxygenated hemoglobin concentrations were obtained for each task (production, comprehension), condition (semantic, phonological) and region (DLPFC, IFG). The results of pairwise t-tests adjusted for multiple comparisons showed significant increases in oxygenated hemoglobin concentration over baseline in the bilateral DLPFC during picture naming for phonologically related words. For picture–word matching, we found significant increases in oxygenated hemoglobin concentration over baseline in the right DLPFC for semantically related words and in the right IFG for phonologically related words. We discuss the results in light of the inhibitory attentional control over competitive lexical access theory in contrast to alternative potential explanations for the findings.

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Evidence from aphasia suggests a bidirectional relationship between inner speech and executive function

Fama,

McCall,

DeMarco

et al. 2024

Neuropsychologia

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Distinguishing semantic control and phonological control and their role in aphasic deficits: A task switching investigation

Cited by 6 publications

References 61 publications

Evidence from aphasia suggests a bidirectional relationship between inner speech and executive function

Evidence from aphasia suggests a bidirectional relationship between inner speech and executive function

The Role of the Dorsolateral Prefrontal Cortex in the Production and Comprehension of Phonologically and Semantically Related Words

Evidence from aphasia suggests a bidirectional relationship between inner speech and executive function

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