Functional and Effective Connectivity Underlying Semantic Verbal Fluency.

Semantic verbal fluency (SVF) impairment is present in several neurological disorders. Although activation in SVF-related areas has been reported, how these regions are connected and their functional roles in the network remain divergent. We assessed SVF static and dynamic functional connectivity (FC) and effective connectivity in healthy participants using functional magnetic resonance imaging. We observed activation in the inferior frontal (IFG), middle temporal (pMTG) and angular gyri (AG), anterior cingulate (AC), insular cortex, and regions of the superior, middle, and medial frontal gyri (SFG, MFG, MidFG). Our static FC analysis showed a highly interconnected task and resting state network. Increased connectivity of AC with the pMTG and AG was observed for the task. The dynamic FC analysis provided circuits with connections similarly modulated across time and regions related to category identification, language comprehension, word selection and recovery, word generation, inhibition of speaking, speech planning, and articulatory planning of orofacial movements. Finally, the effective connectivity analysis provided a network that best explained our data, starting at the AG and going to the pMTG, from which there was a division between the ventral and dorsal streams. The SFG and MFG regions were connected and modulated by the MidFG, while the inferior regions formed the ventral stream. Therefore, we successfully assessed the SVF network, exploring regions associated with the entire processing, from category identification to word generation. The methodological approach can be helpful for further investigation of the SVF network in neurological disorders.

Bridging semantics and medical ontology in the definition of bruxism: An argument for a holistic definition.

OBJECTIVE: The objective of this commentary is to advocate for a holistic, ontology-based definition of bruxism. The intention is to synthesise the best aspects of current definitions into a structured ontological model, thereby refining and enhancing a comprehensive understanding of the full spectrum of bruxism. MATERIALS AND METHODS: The commentary elaborates on the process of integrating these insights into a hierarchical ontology that aligns with ontological principles. SETTINGS AND SAMPLE POPULATION: Not directly applicable as this is a commentary. RESULTS/CONCLUSION: The proposed ontology-based definition of bruxism aims to clarify communication within the medical community and advance research by enabling a comprehensive ontology-based classification of bruxism. By aligning with ontological principles, this approach aspires to act as a catalyst for further research, discussion and consensus in the field.

Electrophysiological alterations during action semantic processing in Parkinson's disease.

Assessments of action semantics consistently reveal markers of Parkinson's disease (PD). However, neurophysiological signatures of the domain remain under-examined in this population, especially under conditions that allow patients to process stimuli without stringent time constraints. Here we assessed event-related potentials and time-frequency modulations in healthy individuals (HPs) and PD patients during a delayed-response semantic judgment task involving related and unrelated action-picture pairs. Both groups had shorter response times for related than for unrelated trials, but they exhibited discrepant electrophysiological patterns. HPs presented significantly greater N400 amplitudes as well as theta enhancement and mu desynchronization for unrelated relative to related trials. Conversely, N400 and theta modulations were abolished in the patients, who further exhibited a contralateralized cluster in the mu range. None of these patterns were associated with the participants' cognitive status. Our results suggest that PD involves multidimensional neurophysiological disruptions during action-concept processing, even under task conditions that elicit canonical behavioral effects. New constraints thus emerge for translational neurocognitive models of the disease.

Multiple names for multi-scope analytical methods, more than a semantic issue.

The use of multiple names for multi-scope analytical methods is often confusing. More precise classification to better accommodate the scope of analytical validation and application is needed.

Translation and cultural adaptation of "Glasgow Children's Benefit Inventory" into Brazilian Portuguese.

OBJECTIVE: Translate and cross-culturally adapt into Brazilian Portuguese the Glasgow Children's Benefit Inventory instrument used for the quality-of-life assessment after pediatric ENT interventions. METHOD: This is a methodological study of translation and cross-cultural adaptation of the GCBI instrument following seven stages: 1) Translation of two versions by two independent translators, 2) Elaboration of a consensual synthetized version, 3) Assessment of the synthetized version by experts, 4) Assessment by the target audience, 5) Back-translation, 6) Pilot study and 7) Use of the instrument. The final version of the instrument was answered by a sample of 28 people responsible for children aged from 2 to 7 years, submitted to tonsillectomy between January 2019 and December 2021, in a public hospital in Porto Alegre. The collection considered patients with a minimum of 6-months and a maximum of 3-years of postoperative follow-up. RESULT: The instrument final version was compared to the original version showing semantic equivalence, absence of consistent translation difficulties and appropriate cross-cultural adaptation, and well understood by the target audience. The application of the questionnaire in the sample showed a Cronbach alpha coefficient of 0.944 corresponding to a high degree of reliability of the instrument. CONCLUSION: The translation and cross-cultural adaptation showed semantic appropriateness and its use when assessing ENT postoperative results in a pediatric population showed high reliability of the instrument.

Describing and understanding the time course of the property listing task.

To study linguistically coded concepts, researchers often resort to the Property Listing Task (PLT). In a PLT, participants are asked to list properties that describe a concept (e.g., for DOG, subjects may list "is a pet", "has four legs", etc.). When PLT data is collected for many concepts, researchers obtain Conceptual Properties Norms (CPNs), which are used to study semantic content and as a source of control variables. Though the PLT and CPNs are widely used across psychology, only recently a model that describes the listing course of a PLT has been developed and validated. That original model describes the listing course using order of production of properties. Here we go a step beyond and validate the model using response times (RT), i.e., the time from cue onset to property listing. Our results show that RT data exhibits the same regularities observed in the previous model, but now we can also analyze the time course, i.e., dynamics of the PLT. As such, the RT validated model may be applied to study several similar memory retrieval tasks, such as the Free Listing Task, Verbal Fluidity Task, and to research related cognitive processes. To illustrate those kinds of analyses, we present a brief example of the difference in PLT's dynamics between listing properties for abstract versus concrete concepts, which shows that the model may be fruitfully applied to study concepts.

The "Small World of Words" free association norms for Rioplatense Spanish.

Large-scale word association datasets are both important tools used in psycholinguistics and used as models that capture meaning when considered as semantic networks. Here, we present word association norms for Rioplatense Spanish, a variant spoken in Argentina and Uruguay. The norms were derived through a large-scale crowd-sourced continued word association task in which participants give three associations to a list of cue words. Covering over 13,000 words and +3.6 M responses, it is currently the most extensive dataset available for Spanish. We compare the obtained dataset with previous studies in Dutch and English to investigate the role of grammatical gender and studies that used Iberian Spanish to test generalizability to other Spanish variants. Finally, we evaluated the validity of our data in word processing (lexical decision reaction times) and semantic (similarity judgment) tasks. Our results demonstrate that network measures such as in-degree provide a good prediction of lexical decision response times. Analyzing semantic similarity judgments showed that results replicate and extend previous findings demonstrating that semantic similarity derived using spreading activation or spectral methods outperform word embeddings trained on text corpora.

[Cross-cultural adaptation and evidence of psychometric validity of the Family Health Scale for Brazilian Portuguese]. / Adaptação transcultural e evidências de validade psicométricas da Family Health Scale para o português brasileiro.

This study aimed to translate and cross-culturally adapt the Family Health Scale into Brazilian Portuguese and analyze evidence of its psychometric validity. The 32 items on family health were cross-culturally adapted, using the content validity index to calculate semantic, idiomatic, cultural, and conceptual characteristics of the scale and its items. A pre-test to identify evidence of validity was applied to 40 families. At another time, the instrument was applied to 354 families in a Brazilian northeastern city. The index of agreement between the raters ranged from 0.84 for the scale items to 0.98 for the total scale, according to Kendall's coefficient. According to Cronbach's alpha, evidence of psychometric validity is adequate. Most families had a moderate degree of health, according to the scale. Therefore, the Brazilian version of the Family Health Scale showed conceptual, semantic, cultural, and operational equivalence with the original items, along with satisfactory psychometric properties for use among the Brazilian population with effectiveness and safety.

Os objetivos deste estudo foram realizar a tradução e adaptação transcultural da Family Health Scale (Escala de Saúde Familiar) para a língua portuguesa brasileira e analisar evidências de validade psicométricas dessa escala. Os 32 itens sobre a saúde familiar foram adaptados transculturalmente. Para a mensuração das evidências de validade do conteúdo, utilizou-se o cálculo do índice de validade de conteúdo das características semântica, idiomática, cultural e conceitual de cada item e da escala. Um pré-teste para identificação de evidência de validade foi realizado com 40 famílias. Em outro momento, a aplicação do instrumento foi executada com 354 famílias, em uma cidade no Nordeste do Brasil. O índice de concordância entre os juízes variou de 0,84, para os itens da escala, a 0,98, para a escala total, conforme o coeficiente de Kendall. As evidências de validade psicométricas mostram-se adequadas, conforme alfa de Cronbach. A maior parte das famílias teve um grau de saúde moderado, conforme aplicação da escala. Assim, a Family Health Scale, versão brasileira, apresentou equivalência conceitual, semântica, cultural e operacional em relação aos itens originais e propriedades psicométricas satisfatórias para a aplicação direcionada à população brasileira, atestando eficácia e segurança de sua utilização.

El objetivo de este estudio fue traducir y realizar la adaptación intercultural de Family Health Scale (Escala de Salud Familiar) al portugués brasileño, y analizar la evidencia de la validez psicométrica de esta escala. Los 32 ítems sobre salud familiar pasaron por una adaptación transcultural y, para medir la evidencia de validez de contenido, se utilizó el cálculo del índice de validez de contenido de las características semántica, idiomática, cultural y conceptual de cada ítem, y la escala. Se realizó una prueba previa con 40 familias para identificar la evidencia de validez. En otro momento, el instrumento se aplicó a 354 familias en una ciudad del Nordeste de Brasil. El índice de acuerdo entre los jueces osciló entre 0,84 para los ítems de la escala y 0,98 para la escala total de acuerdo con el coeficiente de Kendall. La evidencia de validez psicométrica es adecuada conforme el alfa de Cronbach. La mayoría de las familias tenían un grado de salud moderado de acuerdo con la aplicación de la escala. Por lo tanto, la Family Health Scale, versión brasileña, presentó equivalencia conceptual, semántica, cultural y operativa con relación a los ítems originales, y propiedades psicométricas satisfactorias para la aplicación en la población brasileña, lo que da fe de la eficacia y seguridad de su uso.

Subjective position sliding in utterances perceived as echolalic in a child with Language Disorder: a case study. / Deslizamentos de posição subjetiva em enunciados tidos como ecolálicos de uma criança com Distúrbio de Linguagem: um estudo de caso.

Within a linguistic-discursive framework, subject markers in a chain of utterances considered to be echolalia based on the recurring linguistic structure does X want Y? were investigated. This chain was produced during a speech therapy session by J., a female child, 10-years-old at the time of data collection, and with a speech-language pathology diagnosis of language disorder and a medical diagnosis of early psychosis. A set of linguistic fluctuations indicated a sliding of the subject position in the analyzed chain. Such fluctuations involved syntactic, lexical, semantic, morphological and prosodic elements. Discursively, the fluctuations left traces of a sliding of the subject position in the chain formed by these utterances, from a spoken subject (do you want Y?) to a speaking/desiring one (I want Y.). In this way, utterances considered echolalia can provide clues, via their linguistic fluctuations and discursive slippages, about the subject's desire in their relationship with the O/other. Given this, although they do not emerge in a conventional way, such utterances can demonstrate possibilities for changes in subject position. A contribution of the present research for clinical practice involving language in therapeutic settings therefore, was to highlight a listening to utterances, which could be seen as connected/grounded in the speech of the other. In clinical practice involving language, it is possible to create space for new/other senses for utterances, to allow the constitution of the subject of/in language, based on utterances often interpreted as being devoid of subjectivity.

Sob ótica linguístico-discursiva de orientação francesa, foram investigadas marcas de subjetividade numa cadeia de enunciados tidos como ecolálicos, ancorados na estrutura linguística recorrente X quer Y?. No interior de uma sessão de fonoterapia, essa cadeia foi produzida por J., uma criança do sexo feminino, com 10 anos de idade à época da coleta dos dados, com diagnóstico fonoaudiológico de distúrbio de linguagem e diagnóstico médico de psicose precoce. Um conjunto de flutuações linguísticas indiciaram um deslizamento de posição subjetiva na cadeia analisada. Tais flutuações envolveram elementos sintáticos, lexicais, semânticos, morfológicos e prosódicos. Discursivamente, as flutuações deixaram rastros de um deslizamento de posição subjetiva, ou seja, de sujeito falado (cê quer Y?) para falante/desejante (eu quero Y.) na cadeia formada por esses enunciados. Desse modo, enunciados tidos como ecolálicos podem dar pistas do desejo do sujeito em sua relação com o O/outro, por meio de suas flutuações linguísticas e de seus deslizamentos discursivos. Portanto, embora não irrompam de forma convencional, tais enunciados podem mostrar possibilidades de mudanças de posição subjetiva. Por conseguinte, uma contribuição da investigação relatada à clínica de linguagem é a de que, no setting terapêutico, pode haver escuta para enunciados que, em primeira instância, poderiam ser tidos como colados/enraizados no dizer do outro. Na clínica de linguagem é possível, então, dar lugar a novos/outros sentidos a tais enunciados, de maneira a favorecer a constituição do sujeito da/na linguagem a partir de enunciados frequentemente interpretados como esvaziados de subjetividade.

Context-based refinement of mappings in evolving life science ontologies.

BACKGROUND: Biomedical computational systems benefit from ontologies and their associated mappings. Indeed, aligned ontologies in life sciences play a central role in several semantic-enabled tasks, especially in data exchange. It is crucial to maintain up-to-date alignments according to new knowledge inserted in novel ontology releases. Refining ontology mappings in place, based on adding concepts, demands further research. RESULTS: This article studies the mapping refinement phenomenon by proposing techniques to refine a set of established mappings based on the evolution of biomedical ontologies. In our first analysis, we investigate ways of suggesting correspondences with the new ontology version without applying a matching operation to the whole set of ontology entities. In the second analysis, the refinement technique enables deriving new mappings and updating the semantic type of the mapping beyond equivalence. Our study explores the neighborhood of concepts in the alignment process to refine mapping sets. CONCLUSION: Experimental evaluations with several versions of aligned biomedical ontologies were conducted. Those experiments demonstrated the usefulness of ontology evolution changes to support the process of mapping refinement. Furthermore, using context in ontological concepts was effective in our techniques.

Clustering and Switching on verbal fluency tests in elementary school children with and without learning difficulties. / Clustering e Switching nos testes de fluência verbal em crianças do ensino fundamental I com e sem dificuldade de aprendizagem.

PURPOSE: Evaluate the performance in the Semantic and Phonemic Verbal Fluency tests in relation to the cognitive components of clustering and switching and explore the changes in development in elementary school. METHODS: Participants were 68 children from the 2nd to 5th grade of elementary school of a public school in the municipality of Santo André, divided into two groups, Learning Difficulty (LD) and Typical Development (TD). RESULTS: The Verbal Fluency tests were compared for the number of clusters, mean size of the clusters, and number of switches. All variables compared showed a statistically significant higher score for Semantic Verbal Fluency. Means and standard deviations of the same variables for year and group effect were realized in both Verbal Fluency tests. A statistically significant difference was observed only for the total number of clusters in the Semantic Verbal Fluency test for group effect, with the best performance of the TD group. A high correlation was observed between the total number of correct answers with the total number of clusters and number of switches in both Verbal Fluency tests. In addition, a correlation was observed between the total number of correct answers and the mean size of the clusters only in the Phonemic Verbal Fluency. Linear regression analysis showed greater variance for the total number of clusters, making it more predictable for performance in both verbal fluency tests. CONCLUSION: Verbal Fluency tests may be sensitive and predictive for the identification of possible differences in school performance associated with reading.

OBJETIVO: Avaliar o desempenho nos testes de Fluência Verbal Semântica e Fonêmica em relação aos componentes cognitivos de clustering e switching e explorar as mudanças no desenvolvimento no ensino fundamental. MÉTODO: Participaram 68 crianças do 2º ao 5º ano do ensino fundamental I de uma escola pública do município de Santo André, divididas em dois grupos, Dificuldade de Aprendizagem (DA) e Desenvolvimento Típico (DT). RESULTADOS: Os testes de Fluência Verbal foram comparados para o número de clusters, tamanho médio dos clusters e número de switches. Todas as variáveis comparadas mostraram uma pontuação estatisticamente significante maior para o teste de Fluência Verbal Semântica. Foram realizadas as médias e desvios-padrão das mesmas variáveis para efeito de ano e grupo em ambos os testes. Foi observada diferença estatisticamente significante apenas para o número total de clusters no teste de Fluência Verbal Semântica para efeito de grupo, com o melhor desempenho do grupo DT. Observou-se correlação alta no total de acertos em ambos os testes de Fluência Verbal com o número total de clusters e número de switches. Além disso, foi observada correlação entre o total de acertos com a média de tamanho dos clusters apenas no teste de Fluência Verbal Fonêmica. A análise de regressão linear apresentou maior variância para o número total de clusters, o tornando mais preditivo para o desempenho em ambos testes de Fluência Verbal. CONCLUSÃO: Os testes de Fluência Verbal podem ser sensíveis e preditivos para a identificação de possíveis diferenças no desempenho escolar associados à leitura.

Escala de estratégias de resolução de conflitos familiares: adaptação e evidências psicométricas / Family conflict resolution strategies scale: adaptation and psychometric evidence / Escala de estrategias de resolución de conflictos familiares: adaptación y evidencias psicométricas

Este estudo teve o objetivo de adaptar o Conflict Resolution Styles Inventory (CRSI) para o contexto brasileiro e investigar se este apresenta evidências de adequabilidade psicométrica. No Estudo 1 foi desenvolvida a versão brasileira e, posteriormente, foram analisadas evidências de validade de conteúdo por meio da análise de juízes (N = 4 avaliadores especialistas) e adequação semântica em um estudo piloto com adolescentes (N = 15). No Estudo 2, verificamos as propriedades psicométricas do CRSI em uma amostra de adolescentes (N = 276), reunindo evidências de validade de estrutura interna e precisão. Finalmente, no Estudo 3, foram investigadas evidências adicionais de estrutura interna e precisão do CRSI em uma nova amostra (N = 224). Os resultados demonstraram que o CRSI reúne evidências de validade com base no conteúdo, na estrutura interna e de precisão, podendo ser usado para avaliar as estratégias de resolução de conflitos que adolescentes brasileiros utilizam nas discordâncias com seus pais, possibilitando seu uso em pesquisas sobre esse tema.(AU)

This study adapted the Conflict Resolution Styles Inventory (CRSI) for the Brazilian context and assessed its psychometric adequacy. In Study 1, the Brazilian version was developed and content validity was analyzed by experts (N = 4) with semantic adequacy assessed in a pilot study with adolescents (N = 15). In Study 2, psychometric properties were examined in a sample of adolescents (N = 276), providing evidence of internal validity and reliability. Study 3 further investigated evidence of internal validity and reliability in a new sample (N = 224). Results indicated that the CRSI exhibits content validity, internal validity, and reliability, making it suitable for assessing conflict resolution strategies employed by Brazilian adolescents in disagreements with their parents, enabling its use in related research.(AU)

Este estudio tuvo como objetivo adaptar el Conflict Resolution Styles Inventory (CRSI) al contexto brasileño y verificar si presenta evidencias de adecuación psicométrica. En el Estudio 1, se desarrolló la versión brasileña y, posteriormente, se analizaron las evidencias de validez de contenido a través del análisis de jueces (N = 4 evaluadores expertos) y de adecuación semántica en un estudio piloto con adolescentes (N = 15). En el Estudio 2, verificamos las propiedades psicométricas del CRSI en una muestra de adolescentes (N = 276), recogiendo evidencias de validez interna y precisión. Finalmente, en el Estudio 3, se investigó evidencias adicionales de la validez interna y precisión del CRSI en una nueva muestra (N = 224). Los resultados mostraron que el CRSI reúne evidencias de validez de contenido, validez interna y precisión, y puede ser utilizado para evaluar las estrategias de resolución de conflictos utilizadas por adolescentes brasileños en desacuerdos con sus padres, lo que permite su uso en investigaciones sobre este tema.(AU)

The Meaning of Inchoative se in Brazilian Portuguese: A Replication of Lundquist et al.'s (2016) Experiment.

In the well-known causative alternation, a verb appears either in a causative-transitive or in an inchoative-intransitive form. The inchoative form is marked with a reflexive clitic in some languages, such as Norwegian, but is unmarked in others, such as English. There are two main proposals to explain the alternation: a lexical-derivational account (a lexical rule is responsible for the demotion of the cause argument), and a syntactic-derivational one (in a type of reflexivization, the theme/patient is construed as responsible for causing the event). A third type of approach posits that the alternation emerges when a verb can be found in different constructions and no derivation is involved. Lundquist et al. (Glossa J Gen Linguist 1:1-30, 2016) put the first two approaches to experimental testing and found that while the decausativization approach is adequate for English, the reflexivization approach explains the Norwegian facts. The present experimental study investigates which proposal is adequate to explain the alternation in Brazilian Portuguese. Differently from both English and Norwegian, Brazilian Portuguese allows reflexive-marked and unmarked inchoatives with the same verb. In a replication of Lundquist et al.'s (Glossa J Gen Linguist 1:1-30, 2016) experiment, our results show that Brazilian Portuguese assigns distinct meanings to the two forms of the inchoative. We conclude that the reflexive pronoun se indicates that the change of state described in the inchoative sentence was caused by some entity, but not an agent. We then argue that a non-derivational approach explains the alternation, as a single verb occurs in distinct syntactic configurations, with distinct meaning implications.

Development and evaluation of Tamil Matrix Sentence Test Performance in young adults.

PURPOSE: The purpose of the study was to develop the Tamil Matrix Sentence Test (TMST) and evaluate the performance of a group of young adults with normal hearing on the developed test. The developed sentences were also administered at varying intensities to obtain a performance-intensity (PI) function. METHODS: A base matrix with 10 sentences containing 5 words each with a total of 50 words was used to develop the TMST. The sentences had a fixed semantic sentence structure of Tamil language in the order of noun, number, adjective, object and verb. The developed test consisted of 30 lists with 10 sentences in each list. The performance of 60 young adults with normal hearing aged 18 to 24 years across the 30 lists were compared for list equivalency. To obtain the PI function the sentences were administered on 20 young adults with normal hearing at intensities from 20 dB HL to 100 dB HL in 10 dB increments. The performance across the intensity levels were compared. RESULTS: The 30 lists of TMST were found to be acoustically equivalent. However, few lists showed significant difference in the scores obtained on them compared to the rest of the lists. The PI function revealed a saturation in performance beyond 40 dB HL. CONCLUSION: From the results it was construed that TMST can be used to evaluate the speech identification abilities of Tamil speaking listeners. Multiple lists offer the advantage of retesting without the influence of practice or listeners memorizing the test material.

Impaired social concept processing in persons with autistic-like traits.

Situated models suggest that social concepts are grounded in interpersonal experience. However, few studies have tested this notion experimentally, and none has targeted individuals with reduced social interaction. Here, we assessed comprehension of text-level social and non-social concepts in persons with and without autistic-like traits. Participants read a social and a non-social text and answered questionnaires targeting social and non-social concepts, respectively. We compared behavioral outcomes, gauged their contribution to subject-level classification, and examined their association with validated measures of autism. Persons with autistic-like traits showed selective deficits in grasping text-level social concepts, even adjusting for intelligence, memory, and vocabulary. Also, social concept comprehension was the only variable that significantly classified between groups. Finally, social concept outcomes correlated negatively with measures of autism, including social interaction. Our results suggest that reduced interpersonal experience selectively compromises text-level social concept processing, offering empirical constraints for situated models of social semantics.

Contribution and functional connectivity between cerebrum and cerebellum on sub-lexical and lexical-semantic processing of verbs.

Language comprehension involves both sub-lexical (e.g., phonological) and lexical-semantic processing. We conducted a task using functional magnetic resonance imaging (fMRI) to compare the processing of verbs in these two domains. Additionally, we examined the representation of concrete-motor and abstract-non-motor concepts by including two semantic categories of verbs: motor and mental. The findings indicate that sub-lexical processing during the reading of pseudo-verbs primarily involves the left dorsal stream of the perisylvian network, while lexical-semantic representation during the reading of verbs predominantly engages the ventral stream. According to the embodied or grounded cognition approach, modality-specific mechanisms (such as sensory-motor systems) and the well-established multimodal left perisylvian network contribute to the semantic representation of both concrete and abstract verbs. Our study identified the visual system as a preferential modality-specific system for abstract-mental verbs, which exhibited functional connectivity with the right crus I/lobule VI of the cerebellum. Taken together, these results confirm the dissociation between sub-lexical and lexical-semantic processing and provide neurobiological evidence of functional coupling between specific visual modality regions and the right cerebellum, forming a network that supports the semantic representation of abstract concepts. Further, the results shed light on the underlying mechanisms of semantic processing and contribute to our understanding of how the brain processes abstract concepts.

Grammatical impairment in schizophrenia: An exploratory study of the pronominal and sentential domains.

Schizophrenia (SZ) is a severe mental disorder associated with a variety of linguistic deficits, and recently it has been suggested that these deficits are caused by an underlying impairment in the ability to build complex syntactic structures and complex semantic relations. Aiming at contributing to determining the specific linguistic profile of SZ, we investigated the usage of pronominal subjects and sentence types in two corpora of oral dream and waking reports produced by speakers with SZ and participants without SZ (NSZ), both native speakers of Brazilian Portuguese. Narratives of 40 adult participants (20 SZ, and 20 NSZ-sample 1), and narratives of 31 teenage participants (11 SZ undergoing first psychotic episode, and 20 NSZ-sample 2) were annotated and statistically analyzed. Overall, narratives of speakers with SZ presented significantly higher rates of matrix sentences, null pronouns-particularly null 3Person referential pronouns-and lower rates of non-anomalous truncated sentences. The high rate of matrix sentences correlated significantly with the total PANSS scores, suggesting an association between the overuse of simple sentences and SZ symptoms in general. In contrast, the high rate of null pronouns correlated significantly with positive PANSS scores, suggesting an association between the overuse of null pronominal forms and the positive symptoms of SZ. Finally, a cross-group analysis between samples 1 and 2 indicated a higher degree of grammatical impairment in speakers with multiple psychotic episodes. Altogether, the results strengthen the notion that deficits at the pronominal and sentential levels constitute a cross-cultural linguistic marker of SZ.

Phonological and Semantic Fluency in Alzheimer's Disease: A Systematic Review and Meta-Analysis.

BACKGROUND: Semantic and Phonological fluency (SF and PF) are routinely evaluated in patients with Alzheimer's disease (AD). There are disagreements in the literature regarding which fluency task is more affected while developing AD. Most studies focus on SF assessment, given its connection with the temporoparietal amnesic system. PF is less reported, it is related to working memory, which is also impaired in probable and diagnosed AD. Differentiating between performance on these tasks might be informative in early AD diagnosis, providing an accurate linguistic profile. OBJECTIVE: Compare SF and PF performance in healthy volunteers, volunteers with probable AD, and patients with AD diagnosis, considering the heterogeneity of age, gender, and educational level variables. METHODS: A total of 8 studies were included for meta-analysis, reaching a sample size of 1,270 individuals (568 patients diagnosed with AD, 340 with probable AD diagnosis, and 362 healthy volunteers). RESULTS: The three groups consistently performed better on SF than PF. When progressing to a diagnosis of AD, we observed a significant difference in SF and PF performance across our 3 groups of interest (p = 0.04). The age variable explained a proportion of this difference in task performance across the groups, and as age increases, both tasks equally worsen. CONCLUSION: The performance of SF and PF might play a differential role in early AD diagnosis. These tasks rely on partially different neural bases of language processing. They are thus worth exploring independently in diagnosing normal aging and its transition to pathological stages, including probable and diagnosed AD.

Phonological and semantic verbal fluency test: Scoring criteria and normative data for clustering and switching strategies for Colombian children and adolescents.

BACKGROUND: Verbal fluency tests (VFT) are highly sensitive to cognitive deficits. Usually, the score on VFT is based on the number of correct words produced, yet it alone gives little information regarding underlying test performance. The implementation of different strategies (cluster and switching) to perform efficiently during the tasks provide more valuable information. However, normative data for clustering and switching strategies are scarce. Moreover, scoring criteria adapted to Colombian Spanish are missing. AIMS: (1) To describe the Colombian adaptation of the scoring system guidelines for clustering and switching strategies in VFT; (2) to determine its reliability; and (3) to provide normative data for Colombian children and adolescents aged 6-17 years. METHODS & PROCEDURES: A total of 691 children and adolescents from Colombia completed phonological (/f/, /a/, /s/, /m/, /r/ and /p/) and semantic (animals and fruits) VFT, and five scores were calculated: total score (TS), number of clusters (NC), cluster size (CS), mean cluster size (MCS) and number of switches (NS). The intraclass correlation coefficient was used for interrater reliability. Hierarchical multiple regressions were conducted to investigate which strategies were associated with VFT TS. Multiple regressions were conducted for each strategy, including as predictors age, age2 , sex, mean parents' education (MPE), MPE2 and type of school, to generate normative data. OUTCOMES & RESULTS: Reliability indexes were excellent. Age was associated with VFT TS, but weakly compared with strategies. For both VFT TS, NS was the strongest variable, followed by CS and NC. Regarding norms, age was the strongest predictor for all measures, while age2 was relevant for NC (/f/ phoneme) and NS (/m/ phoneme). Participants with higher MPE obtained more NC, and NS, and larger CS in several phonemes and categories. Children and adolescents from private school generated more NC, NS and larger CS in /s/ phoneme. CONCLUSIONS & IMPLICATIONS: This study provides new scoring guidelines and normative data for clustering and switching strategies for Colombian children and adolescents between 6 and 17 years old. Clinical neuropsychologists should include these measures as part of their everyday practice. WHAT THIS PAPER ADDS: What is already known on the subject VFT are widely used within the paediatric population due to its sensitivity to brain injury. Its score is based on the number of correct words produced; however, TS alone gives little information regarding underlying test performance. Several normative data for VFT TS in the paediatric population exist, but normative data for clustering and switching strategies are scarce. What this paper adds to existing knowledge The present study is the first to describe the Colombian adaptation of the scoring guidelines for clustering and switching strategies, and provided normative data for these strategies for children and adolescents between 6 and 17 years old. What are the potential or actual clinical implications of this work? Knowing VFT's performance, including strategy development and use in healthy children and adolescents, may be useful for clinical settings. We encourage clinicians to include not only TS, but also a careful analysis of strategies that may be more informative of the underlying cognitive processes failure than TS.

REDbox: a comprehensive semantic framework for data collection and management in tuberculosis research.

Clinical research outcomes depend on the correct definition of the research protocol, the data collection strategy, and the data management plan. Furthermore, researchers often need to work within challenging contexts, as is the case in tuberculosis services, where human and technological resources for research may be scarce. Electronic Data Capture Systems mitigate such risks and enable a reliable environment to conduct health research and promote result dissemination and data reusability. The proposed solution is based on needs pinpointed by researchers, considering the need for an accommodating solution to conduct research in low-resource environments. The REDbox framework was developed to facilitate data collection, management, sharing, and availability in tuberculosis research and improve the user experience through user-friendly, web-based tools. REDbox combines elements of the REDCap and KoBoToolbox electronic data capture systems and semantics to deliver new valuable tools that meet the needs of tuberculosis researchers in Brazil. The framework was implemented in five cross-institutional, nationwide projects to evaluate the users' perceptions of the system's usefulness and the information and user experience. Seventeen responses (representing 40% of active users) to an anonymous survey distributed to active users indicated that REDbox was perceived to be helpful for the particular audience of researchers and health professionals. The relevance of this article lies in the innovative approach to supporting tuberculosis research by combining existing technologies and tailoring supporting features.