Differences in linguistic cohesion within the first year following right- and left-hemisphere lesions

Stockbridge, Melissa D.; Berube, Shauna; Goldberg, Emily; Suarez, Adrian A.; Mace, Rachel; Ubellacker, Delaney; Hillis, Argye E.

doi:10.1080/02687038.2019.1693026

Cited by 21 publications

(22 citation statements)

References 27 publications

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“…Participants with the mildest impairments received only a few sessions, whereas participants with severe impairments received extended and intensive therapy. Also, most longitudinal studies that did not specifically investigated the effect of therapy have not investigated the effect of treatment on longitudinal changes (e.g., Hillis et al, 2018;Stockbridge et al, 2019). However, there is still a clear need to further investigate the effect of the multiple dimensions of therapy on longitudinal changes in post-stroke aphasia, not only for changes observed in discourse tasks as in the present study, but on all language abilities.…”

Section: Discussionmentioning

confidence: 77%

“…These results support the fact that the natural recovery of subtle language disruptions following a stroke is important. More recently, changes in the production of cohesive ties in narrative discourse have been investigated in a large group of participants with right (n=76) and left (n=145) hemisphere ischemic stroke at two time points --<1 week and 6-12 months post-stroke (Stockbridge et al, 2021). This study demonstrated that deficits in cohesion occur whether the stroke is located in the right or left hemisphere, and that patterns of cohesive markers are different across the two groups of participants.…”

Section: Longitudinal Discourse Studies In Aphasiamentioning

confidence: 95%

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A longitudinal study of narrative discourse in post-stroke aphasia

et al. 2021

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Background: Previous findings have demonstrated the importance of discourse analysis in post-stroke aphasia, as it allows for in-depth examination of language impairment and represents key components of functional communication.However, little is known about the recovery of discourse over time. Aims:The main aim of this study is to measure the longitudinal changes in descriptive discourse production from the acute to chronic stages of post-stroke aphasia recovery. The secondary aim is to explore the association between discourse measures and overall language impairment severity measures at different testing points.Methods & Procedure: Seventeen French Canadian speakers with various types and severities of aphasia following a first left middle cerebral artery stroke participated in this study. They underwent three language assessments (acute: 0 to 72 hours; subacute: 7 to 14 days; chronic: 6 to 12 months post-onset). The picture description from the Western Aphasia Battery was analyzed at three time points.Changes in terms of thematic informativeness and microstructural variables were analyzed.Outcomes & Results: Regarding the micro-structural variables, the mean length of utterances (MLU) and the number of words per minute showed significant positive changes between the acute and chronic phases. For the thematic informativeness measures, the number of thematic units (TUs), the number of thematic units per minute (TUs/min) and the number of thematic units per utterance (TUs/utt)

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Section: Discussionmentioning

confidence: 77%

Section: Longitudinal Discourse Studies In Aphasiamentioning

confidence: 95%

A longitudinal study of narrative discourse in post-stroke aphasia

et al. 2021

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“…Although most studies suggest that deficits in cohesion occur when stroke is located in the RH Sherratt & Bryan, 2012;Stockbridge et al, 2019), others have reported cohesion impairments following a stroke in the LH (Andreetta et al, 2012;Barker et al, 2017;Davis et al, 1997;Ellis et al, 2005;Geranmayeh et al, 2017;Marini, 2012;Stockbridge et al, 2019;Uryase et al, 1991). Among the few existing longitudinal studies, Stockbridge et al (2019) reported that total cohesive markers were similarly used between LH and RH individuals in the narrative samples obtained from the analyses of the Cookie theft of the Boston Diagnostic Aphasia Examination (BDAE). However, when looking at the acute (< 1 week after stroke) and the chronic (6-12 months after stroke) stages independently, fewer cohesive ties were produced in samples from LH individuals than RH individuals in the acute phase.…”

Section: Introductionmentioning

confidence: 99%

Neuroanatomical Correlates of Macrolinguistic Aspects in Narrative Discourse in Unilateral Left and Right Hemisphere Stroke: A Voxel-Based Morphometry Study

Schneider

Marcotte

Brisebois

et al. 2021

J Speech Lang Hear Res

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Background A growing body of literature has demonstrated the importance of discourse assessment in patients who suffered from brain injury, both in the left and right hemispheres, as discourse represents a key component of functional communication. However, little is known about the relationship between gray matter density and macrolinguistic processing. Purpose This study aimed to investigate this relationship in a group of participants with middle–low to low socioeconomic status. Method Twenty adults with unilateral left hemisphere ( n = 10) or right hemisphere ( n = 10) chronic ischemic stroke and 10 matched (age, education, and socioeconomic status) healthy controls produced three oral narratives based on sequential scenes. Voxel-based morphometry analysis was conducted using structural magnetic resonance imaging. Results Compared to healthy controls, the left hemisphere group showed cohesion impairments, whereas the right hemisphere group showed impairments in coherence and in producing macropropositions. Cohesion positively correlated with gray matter density in the right primary sensory area (PSA)/precentral gyrus and the pars opercularis. Coherence, narrativity, and index of lexical informativeness were positively associated with the left PSA/insula and the superior temporal gyrus. Macropropositions were mostly related to the left PSA/insula and superior temporal gyrus, left cingulate, and right primary motor area/insula. Discussion Overall, the present results suggest that both hemispheres are implicated in macrolinguistic processes in narrative discourse. Further studies including larger samples and with various socioeconomic status should be conducted. Supplemental Material https://doi.org/10.23641/asha.14347550

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“…Pause lengths were manually extracted from Audacity ® software. Sample lengths refer to the total number of completed words, excluding words filling pauses such as “um” “uh” [34,35].…”

Section: Methodsmentioning

confidence: 99%

Macrolinguistic function in temporal lobe epilepsy: a reinterpretation of circumstantiality

D'Aprano

Malpas

Roberts

et al. 2022

Preprint

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Individuals with temporal lobe epilepsy (TLE) often have an impairment of conversational language manifesting as verbosity and attributable to disruption of cognitive-linguistic networks. The micro- and macrolinguistic underpinnings of this disturbance, and the role of epilepsy and cognitive variables, are yet to be explored. We examined the elicited language output of 16 individuals with TLE and 14 healthy controls under separate monologic discourse tasks: a structured and constrained context, elicited by description of the Cookie Theft picture, and an unstructured, unconstrained context, elicited by description of a Typical Day. We hypothesised that language output in the unstructured context would be characterised by verbosity to a greater extent than language elicited in a structured context. Following transcription and coding, detailed multi-level discourse analysis suggested that a constrained context gives rise to microlinguistic disturbances in individuals with TLE, reducing fluency, with more pauses and fillers. Under an unconstrained context, as anticipated, classical aspects of verbosity emerge in those with TLE, manifesting as longer speaking time, a longer duration of pauses, and a higher proportion of repetitive or redundant statements. Macrolinguistic elements such as coherence and informativeness are widely impacted, particularly disturbing language formulation. Correlations suggest that microlinguistic disturbances are closely linked with the immediate impact of seizures on cognitive-linguistic function, while macrolinguistic disturbances are more broadly impacted by disorder severity and word retrieval deficits. These findings suggest that different psycholinguistic impairments emerge as a function of differing linguistic challenges imposed by constrained and unconstrained conversational contexts. We conclude that these patterns reflect a dynamic linguistic system taking shape under specific contextual conditions.

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Differences in linguistic cohesion within the first year following right- and left-hemisphere lesions

Cited by 21 publications

References 27 publications

A longitudinal study of narrative discourse in post-stroke aphasia

A longitudinal study of narrative discourse in post-stroke aphasia

Neuroanatomical Correlates of Macrolinguistic Aspects in Narrative Discourse in Unilateral Left and Right Hemisphere Stroke: A Voxel-Based Morphometry Study

Macrolinguistic function in temporal lobe epilepsy: a reinterpretation of circumstantiality

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