Word Error Analysis in Aphasia: Introducing the Greek Aphasia Error Corpus (GRAEC)

Kasselimis, Dimitrios; Varkanitsa, Maria; Angelopoulou, Georgia; Evdokimidis, Ioannis; Goutsos, Dionysis; Potagas, Constantin

doi:10.3389/fpsyg.2020.01577

Cited by 4 publications

(5 citation statements)

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“…Speech fluency was measured by the speech rate (SR) in two tasks (a) the Stroke Story (SS) test, which requires the patient to describe orally her/his stroke incident, and (b) the Cookie Theft Picture (CTP) test, which requires the description of a picture depicting a “cookie theft” event. SR was calculated as the total number of words divided by the total duration of speech (words/minute), as previously implemented in studies investigating narrative abilities in patients with aphasia (see for example: Andreetta et al, 2012 ; Efthymiopoulou et al, 2017 ; DeDe and Salis, 2020 ; Gordon and Clough, 2020 ; Kasselimis et al, 2020 ) and patients with primary progressive aphasia (PPA; see for example: Knibb et al, 2009 ; Wilson et al, 2010 ). Patients were instructed to speak with no restrictions with respect to narration time.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…In the case of long silent intervals, the examiners provided the patients with minimal encouragement to continue the narration. In case the patients did not respond, narration assessment was stopped (for a detailed description, see Angelopoulou et al, 2020;Kasselimis et al, 2020). Additionally, the Greek version of the Boston Naming Test (BNT; Simos et al, 2010) and a receptive vocabulary test, the Greek version of the Peabody Picture Vocabulary Test-Revised (PPVT-R; Simos et al, 2010) were used, including the Controlled Oral Word Fluency (COWF) test (Kosmidis et al, 2004), a verbal fluency task standardized in Greek.…”

Section: Neuropsychological Evaluationmentioning

confidence: 99%

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The Role of the Right Hemisphere White Matter Tracts in Chronic Aphasic Patients After Damage of the Language Tracts in the Left Hemisphere

Kourtidou

Kasselimis

Angelopoulou

et al. 2021

Front. Hum. Neurosci.

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The involvement of the right hemisphere (RH) in language, and especially after aphasia resulting from left hemisphere (LH) lesions, has been recently highlighted. The present study investigates white matter structure in the right hemisphere of 25 chronic post-stroke aphasic patients after LH lesions in comparison with 24 healthy controls, focusing on the four cortico-cortical tracts that link posterior parietal and temporal language-related areas with Broca’s region in the inferior frontal gyrus of the LH: the Superior Longitudinal Fasciculi II and III (SLF II and SLF III), the Arcuate Fasciculus (AF), and the Temporo-Frontal extreme capsule Fasciculus (TFexcF). Additionally, the relationship of these RH white matter tracts to language performance was examined. The patients with post-stroke aphasia in the chronic phase and the healthy control participants underwent diffusion tensor imaging (DTI) examination. The aphasic patients were assessed with standard aphasia tests. The results demonstrated increased axial diffusivity in the RH tracts of the aphasic patients. Patients were then divided according to the extent of the left hemisphere white matter loss. Correlations of language performance with radial diffusivity (RD) in the right hemisphere homologs of the tracts examined were demonstrated for the TFexcF, SLF III, and AF in the subgroup with limited damage to the LH language networks and only with the TFexcF in the subgroup with extensive damage. The results argue in favor of compensatory roles of the right hemisphere tracts in language functions when the LH networks are disrupted.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Neuropsychological Evaluationmentioning

confidence: 99%

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The Role of the Right Hemisphere White Matter Tracts in Chronic Aphasic Patients After Damage of the Language Tracts in the Left Hemisphere

Kourtidou

Kasselimis

Angelopoulou

et al. 2021

Front. Hum. Neurosci.

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“…The recorded speech samples have to undergo orthographic transcription, adhering to the fundamental conventions of discourse analysis transcription (for Greek, see [50]). Additionally, the coding conventions from the Greek Aphasia Error Corpus, as detailed by Kasselimis et al [51], have to be applied during transcription. Instruction by examiners and extraneous discussion between examiners and participants that are irrelevant to the narration content should be identified and subsequently omitted.…”

Section: Suggested Methodological Pipeline For the Connected Speech A...mentioning

confidence: 99%

A Methodological Approach to Quantifying Silent Pauses, Speech Rate, and Articulation Rate across Distinct Narrative Tasks: Introducing the Connected Speech Analysis Protocol (CSAP)

Angelopoulou,

Kasselimis,

Goutsos

et al. 2024

Brain Sciences

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The examination of connected speech may serve as a valuable tool for exploring speech output in both healthy speakers and individuals with language disorders. Numerous studies incorporate various fluency and silence measures into their analyses to investigate speech output patterns in different populations, along with the underlying cognitive processes that occur while speaking. However, methodological inconsistencies across existing studies pose challenges in comparing their results. In the current study, we introduce CSAP (Connected Speech Analysis Protocol), which is a specific methodological approach to investigate fluency metrics, such as articulation rate and speech rate, as well as silence measures, including silent pauses’ frequency and duration. We emphasize the importance of employing a comprehensive set of measures within a specific methodological framework to better understand speech output patterns. Additionally, we advocate for the use of distinct narrative tasks for a thorough investigation of speech output in different conditions. We provide an example of data on which we implement CSAP to showcase the proposed pipeline. In conclusion, CSAP offers a comprehensive framework for investigating speech output patterns, incorporating fluency metrics and silence measures in distinct narrative tasks, thus allowing a detailed quantification of connected speech in both healthy and clinical populations. We emphasize the significance of adopting a unified methodological approach in connected speech studies, enabling the integration of results for more robust and generalizable conclusions.

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“…Silent pauses were annotated following the pipeline presented in Angelopoulou et al (3), using ELAN program (Brugman and Russell, 2004;Wittenburg et al, 2006). Speech samples were orthographically transcribed following the basic conventions of the coding conventions of the Greek Aphasia Error Corpus [see (32)]. Silent pauses' frequency was calculated for each participant, for each narrative task, adjusted for total number of words utterned.…”

Section: Participantsmentioning

confidence: 99%

Investigating silent pauses in connected speech: integrating linguistic, neuropsychological, and neuroanatomical perspectives across narrative tasks in post-stroke aphasia

Angelopoulou,

Kasselimis,

Varkanitsa

et al. 2024

Front. Neurol.

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IntroductionSilent pauses are regarded as integral components of the temporal organization of speech. However, it has also been hypothesized that they serve as markers for internal cognitive processes, including word access, monitoring, planning, and memory functions. Although existing evidence across various pathological populations underscores the importance of investigating silent pauses’ characteristics, particularly in terms of frequency and duration, there is a scarcity of data within the domain of post-stroke aphasia.MethodsThe primary objective of the present study is to scrutinize the frequency and duration of silent pauses in two distinct narrative tasks within a cohort of 32 patients with chronic post-stroke aphasia, in comparison with a control group of healthy speakers. Subsequently, we investigate potential correlation patterns between silent pause measures, i.e., frequency and duration, across the two narrative tasks within the patient group, their performance in neuropsychological assessments, and lesion data.ResultsOur findings showed that patients exhibited a higher frequency of longer-duration pauses in both narrative tasks compared to healthy speakers. Furthermore, within-group comparisons revealed that patients tended to pause more frequently and for longer durations in the picture description task, while healthy participants exhibited the opposite trend. With regard to our second research question, a marginally significant interaction emerged between performance in semantic verbal fluency and the narrative task, in relation to the location of silent pauses—whether between or within clauses—predicting the duration of silent pauses in the patient group. However, no significant results were observed for the frequency of silent pauses. Lastly, our study identified that the duration of silent pauses could be predicted by distinct Regions of Interest (ROIs) in spared tissue within the left hemisphere, as a function of the narrative task.DiscussionOverall, this study follows an integrative approach of linguistic, neuropsychological and neuroanatomical data to define silent pauses in connected speech, and illustrates interrelations between cognitive components, temporal aspects of speech, and anatomical indices, while it further highlights the importance of studying connected speech indices using different narrative tasks.

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Word Error Analysis in Aphasia: Introducing the Greek Aphasia Error Corpus (GRAEC)

Cited by 4 publications

References 53 publications

The Role of the Right Hemisphere White Matter Tracts in Chronic Aphasic Patients After Damage of the Language Tracts in the Left Hemisphere

The Role of the Right Hemisphere White Matter Tracts in Chronic Aphasic Patients After Damage of the Language Tracts in the Left Hemisphere

A Methodological Approach to Quantifying Silent Pauses, Speech Rate, and Articulation Rate across Distinct Narrative Tasks: Introducing the Connected Speech Analysis Protocol (CSAP)

Investigating silent pauses in connected speech: integrating linguistic, neuropsychological, and neuroanatomical perspectives across narrative tasks in post-stroke aphasia

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