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Cordonier, Natacha

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Cordonier, Natacha
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https://libra.unine.ch/handle/123456789/1112

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  • Publication
    Accès libre
    Time reference in aphasia: are there differences between tenses and aphasia fluency type? A systematic review and individual participant data meta-analysis
    (2024-02-08)
    Cordonier, Natacha 
    ;
    Schaffner, Evodie 
    ;
    Zeroual Lana
    ;
    Fossard, Marion 
    Time reference is used to build the temporal framework of discourse and is essential in ensuring efficient communication. Several studies have reported time reference deficits in fluent and non-fluent aphasia and have shown that tenses (past, present, future) are not all impaired to the same extent. However, there is little consensus on the dissociations between tenses, and the question of the influence of the type of aphasia (fluent vs. non-fluent) on time reference remains open. Therefore, a systematic review and an individual participant data meta-analysis (or mega-analysis) were conducted to determine (1) whether one tense is more impaired than another in fluent and non-fluent aphasia and, if so, (2) which task and speaker-related factors moderate tense effects. The systematic review resulted in 35 studies reporting the performance in time reference of 392 participants. The mega-analysis was then performed on 23 studies for a total of 232 participants and showed an alteration of past tense compared to present and future tenses in both types of aphasia. The analysis also showed a task and an age effect on time reference but no gender effect, independently of tenses. These results add to our knowledge of time reference in aphasia and have implications for future therapies.
  • Publication
    Accès libre
    Improved comprehension of irony and indirect requests following a severe traumatic brain injury: two case studies
    (2023-11-16)
    Cordonier, Natacha 
    ;
    Maud Champagne-Lavau
    ;
    Fossard, Marion 
    Background: Following a traumatic brain injury (TBI), people frequently have difficulty understanding nonliteral language, including irony and indirect requests. Despite the handicap that these disorders can represent in daily life, they are rarely treated clinically, and remediation studies are scarce. Aims: The present study thus aimed to evaluate the effectiveness of an explicit metapragmatic therapy targeting nonliteral language comprehension and taking into account cognitive processes likely to underlie this comprehension (i.e., contextual processing, theory of mind, and executive functions). Methods & Procedure: This study was registered on the ClinicalTrials.gov system (ID: NCT04708561) before participant recruitment. Two adults with severe TBI took part in the study. An ABA design with multiple baselines was used to assess the evolution of treated and non-treated written literal and nonliteral story comprehension, as well as ecological tasks and tasks assessing the cognitive processes of interest (theory of mind and executive functions). An interview was also conducted at the end of treatment to assess participant satisfaction. Outcomes & results: Therapy resulted in significant improvement in treated items, with one-month maintenance of gains and generalisation to untreated items in both participants. The generalisation to a working memory task was also observed in one participant. Finally, participant satisfaction with the treatment was high. Conclusions & implications: Our study demonstrated for the first time the potential of a therapy targeting irony and indirect request comprehension in TBI individuals. Clinically, it offers concrete therapeutic avenues and fills a critical gap in the TBI population’s evidence for the remediation of nonliteral language comprehension.
  • Publication
    Accès libre
  • Publication
    Accès libre
    Differential Impairments in Irony comprehension in Brain-Damaged Individuals: Insight from contextual processing, theory of mind, and executive functions
    (2020-8-11)
    Cordonier, Natacha 
    ;
    Fossard, Marion 
    ;
    Champagne-Lavau, Maud
    Objective: The comprehension of irony can be affected after brain injuries. The cognitive mechanisms accounting for such disorders remain yet unclear. The heterogeneity of cognitive profiles of braindamaged individuals and the use of independent tests to measure the links between these mechanisms and the comprehension of irony might contribute to this lack of clarity. The present study aimed to further explore the underlying mechanisms of irony-understanding disorders (i.e., context processing, executive functions [EF], and theory of mind [ToM]) in patients with brain lesions. Method: We used a paradigm manipulating these mechanisms within an irony task to identify different patterns of pragmatic performance associated with cognitive profiles. We administered this task and standard neuropsychological tests assessing EF and ToM to 30 participants with acquired brain injury (ABI) and 30 healthy control (HC) participants. Results: A cluster analysis revealed that two thirds of the participants with ABI (3 subgroups out of 4) presented atypical pragmatic and neuropsychological patterns. The most severe disturbances in understanding irony, characterized by insensitivity to the context, were associated with a joint impairment of ToM and EF in 1 subgroup. In the 2 other context-sensitive subgroups, an isolated deficit in EF co-occurred with difficulties dealing with literal or ironic statements when the EF demand of the irony task was increased. However, the effect of this EF demand could be negated by the presence of markers helping the comprehension of irony. Conclusion: These results have important clinical implications for the evaluation and therapy of pragmatic disorders in individuals with ABI.
  • Publication
    Accès libre
    Differential impairments in irony comprehension in brain-damaged individuals: Insight from contextual processing, theory of mind and executive functions
    (2020)
    Cordonier, Natacha 
    Objective: The comprehension of irony can be affected after brain injuries. The cognitive mechanisms accounting for such disorders remain yet unclear. The heterogeneity of cognitive profiles of brain-damaged individuals and the use of independent tests to measure the links between these mechanisms and the comprehension of irony might contribute to this lack of clarity. The present study aimed to further explore the underlying mechanisms of irony understanding disorders (i.e., context processing, executive functions (EF), and theory of mind (ToM)) in patients with brain lesions.
    Method: We used a paradigm manipulating these mechanisms within an irony task to identify different patterns of pragmatic performance associated with cognitive profiles. We administered this task and standard neuropsychological tests assessing EF, and ToM to thirty acquired brain injured (ABI) and thirty healthy control (HC) participants.
    Results: A cluster analysis revealed that two-thirds of the ABI participants (3 sub-groups out of 4) presented atypical pragmatic and neuropsychological patterns. The most severe disturbances in understanding irony, characterized by insensitivity to the context, were associated with a joint impairment on ToM and EF in one subgroup. In the two other context-sensitive subgroups, an isolated deficit in EF co-occurred with difficulties dealing with literal or ironic statements when the EF demand of the irony task was increased. However, the effect of this EF demand could be negated by the presence of markers helping the comprehension of irony.
    Conclusions: These results have important clinical implications for the evaluation and therapy of pragmatic disorders in ABI individuals.
  • Publication
    Accès libre
    Context processing during irony comprehension in right-frontal brain-damaged individuals
    (2018)
    Champagne-Lavaum, Maud
    ;
    Cordonier, Natacha 
    ;
    Bellmann, Anne
    ;
    Fossard, Marion 
    The aim of the present study was to investigate whether the degree of incongruity between contextual information and a target sentence influences the extent to which irony is understood in individuals with right-frontal-hemisphere damage (RHD). A psycholinguistic paradigm was used, allowing us to assess whether impairment in irony understanding is likely to be due to insensitivity (i.e. difficulty in capturing or detecting relevant contextual information) to relevant contextual information or to difficulties in integrating contextual information. Twenty individuals with RHD and 20 healthy control (HC) participants were tested on their understanding of a speaker’s ironic intent and their executive functions. The main results revealed that individuals with RHD exhibit different patterns of performance, some of them being able to understand irony while in others this ability was impaired. The present study gives support to the hypothesis that difficulties in adequately using contextual information may account for pragmatic impairment of individuals with RHD. More importantly, the results suggested that these difficulties are related to a lack of sensitivity to contextual information instead of difficulty integrating it along with the ironic utterance. A subgroup of individuals with RHD processed the speaker’s utterance without any reference to contextual information, which led them to a literal interpretation of the utterance.
  • Publication
    Accès libre
    Prise en charge des troubles de la communication consécutifs à un traumatisme crânio-cérébral : une revue systématique
    (2017)
    Cordonier, Natacha 
    Suite à un traumatisme crânio-cérébral, plusieurs individus présentent des troubles de la communication pouvant affecter la prosodie, le discours et/ou la pragmatique. Ces déficits sont une source importante de handicap, dans la mesure où ils constituent un frein à la réintégration professionnelle et sociale, et ce encore plusieurs années après le traumatisme. Le diagnostic de tels déficits et la mise en place d’une prise en charge adaptée sont par conséquent capitaux. Malheureusement, les outils d’évaluation et les pistes de prise en charge pour aider les logopédistes dans leur travail sont encore peu nombreux. Par conséquent, cet article vise à donner un aperçu de l’état actuel des données sur les traitements de la communication consécutifs à un traumatisme crânio-cérébral, par le biais d’une recherche systématique de littérature. Nous décrirons ainsi les modalités et types de thérapies utilisés pour traiter divers domaines de la communication et rapporterons les résultats prometteurs de ces études concernant la question de leur efficacité à court et long terme. Quelques pistes de réflexion et perspectives découlant de ces résultats seront finalement discutées., After a traumatic brain injury, many individuals experience communication disorders, affecting especially prosody, discourse and/or pragmatics. These deficits are an important source of disability, as they constitute an impediment to professional and social reintegration, even several years after the injury. The diagnosis of such deficits and the introduction of appropriate therapies are crucial. Unfortunately, there are still few assessment tools and rehabilitation pathways to assist speech therapists in their work. This article aims to provide an overview of the current state of the evidence on communication treatments following a traumatic brain injury, through a systematic search of the literature. We will describe the modalities and types of therapies used to address various areas of communication and will report the promising results of their shortand long-term efficiency. The results and further perspectives are finally discussed.