Gilberti project and the creation of a linguistic dataset: Conservation and linguistic study of the P'urhépecha language.

This document provides a dataset transcription and translation of unpublished texts in the P'urhépecha language. The preserved texts are of a religious nature, reflecting the evangelizing efforts of missionaries during the 17th to 19th centuries, with a specific emphasis on the initiatives undertaken by the Gilberti Project at the Center for the Study of Traditions of El Colegio de Michoacán. The investigation introduces innovative digital tools and editable resources, opening new avenues for the study and preservation of the P'urhépecha language, ensuring its relevance and accessibility for future generations. The Gilberti Project has been active for over two decades, dedicating itself to the analysis of P'urhépecha texts. Beyond its academic role, the project significantly contributes to the conservation and promotion of the p'urhépecha language in several indigenous communities in the state of Michoacán, Mexico, where the language is still alive.

Written language preservation in glioma patients undergoing awake surgery: The value of tailored intra-operative assessment.

Written language is increasingly important, as contemporary society strongly relies on text-based communication. Nonetheless, in neurosurgical practice, language preservation has classically focused on spoken language. The current study aimed to evaluate the potential role of intra-operative assessments in the preservation of written language skills in glioma patients undergoing awake surgery. It is the first feasibility study to use a standardized and detailed Written language battery in glioma patients undergoing awakening surgery. Reading and spelling were assessed pre- and post-operatively in eleven patients. Intra-operatively, 7 cases underwent written language assessment in addition to spoken object naming. Results show that reading and spelling deficits may arise before and after glioma surgery and that written language may be differently affected than spoken language. In our case series, task-specific preservation of function was obtained in all cases when a specific written language skill was monitored intra-operatively. However, the benefits of intra-operative testing did not always generalize, and non-monitored written language tasks may not be preserved. Hence, when a specific written language skill needs to be preserved, to facilitate return to work and maintain quality of life, results indicate that intra-operative assessment of that skill is advised. An illustrative case report demonstrates how profile analyses can be used pre-operatively to identify cognitive components at risk and intra-operatively to preserve written language abilities in clinical practice.

Speaking out: A mathematical model of language preservation.

Languages evolve as an effect of communal competition while environmental and social dynamics characterize a language. There are thousands of languages spoken around the world but many of them are in danger of going extinct because of language competition and shifts. Modeling language preservation is important because the rise and fall of a language directly impacts the culture attached to it. We present a study of language competition and preservation between a bilingual population and two monolingual populations using a mathematical model involving nonlinear systems of differential equations. Building upon the ideas of previous models in the literature, the model utilizes population proportions with a simple structure that yields noteworthy behavior including a stable spiral with all three language groups preserved. We investigate how bilinguals and monolinguals can coexist as well as how they can affect one another. Los idiomas evolucionan como efecto de la competencia comunitaria, mientras que las dinámicas ambientales y sociales caracterizan a un idioma. Se hablan miles de idiomas en todo el mundo, pero muchos de ellos están en peligro de extinción debido a la competencia lingüística y los cambios. Modelar la preservación del lenguaje es importante porque el auge y la caída de un idioma impacta directamente en la cultura que se le atribuye. Presentamos un estudio de la competencia y preservación del lenguaje entre una población bilingüe y dos poblaciones monolingües utilizando un modelo matemático que involucra sistemas no lineales de ecuaciones diferenciales. Sobre la base de las ideas de modelos anteriores en la literatura, el modelo utiliza proporciones de población con una estructura simple que produce un comportamiento notable que incluye una espiral estable con los tres grupos lingüísticos preservados. Investigamos cómo los bilingües y los monolingües pueden coexistir y cómo pueden afectarse unos a otros.

Evaluating Spelling in Glioma Patients Undergoing Awake Surgery: a Systematic Review.

A main goal of awake surgery is to preserve language in order to facilitate return to work and maintain quality of life. Although spelling has become crucial in daily life, it has received little attention in awake surgery practice. We review assessments of spelling carried out in awake surgery studies, to inspect how current neurofunctional theories of spelling may guide pre-, intra- and post-operative neurosurgical practice. A systematic database search in Embase, Medline, PubMed and Web of Science identified studies reporting on spelling assessment in glioma patients undergoing awake surgery. Twenty-three studies were included, of which only 9 report details on spelling assessments. We evaluate the incidence of dysgraphia in glioma patients, the types of spelling errors as a function of tumor location, and the specificity of spelling sites with respect to other language functions. Post-operative dysgraphia arose in 26.9% of the patients with preserved pre-operative handwriting, and persisted in 45.0% of them at follow-up. Intra-operative stimulation interfered only with handwriting in 37.7% of the patients. A network of frontal, parietal and temporal regions was found to underlie central and peripheral spelling processes. Evidence on spelling performance in patients undergoing awake surgery for gliomas is surprisingly scarce. With the limitations inherent in the small number of observations, results converge with the neurofunctional knowledge accruing from studies of stroke cases. Such knowledge should be exploited in more thorough investigations of spelling skills in glioma patients. Implications for clinical and neuroscientific practice are discussed, as well as possible strategies to overcome current limitations.

Tongues on the EDGE: language preservation priorities based on threat and lexical distinctiveness.

Languages are being lost at rates exceeding the global loss of biodiversity. With the extinction of a language we lose irreplaceable dimensions of culture and the insight it provides on human history and the evolution of linguistic diversity. When setting conservation goals, biologists give higher priority to species likely to go extinct. Recent methods now integrate information on species evolutionary relationships to prioritize the conservation of those with a few close relatives. Advances in the construction of language trees allow us to use these methods to develop language preservation priorities that minimize loss of linguistic diversity. The evolutionarily distinct and globally endangered (EDGE) metric, used in conservation biology, accounts for a species' originality (evolutionary distinctiveness-ED) and its likelihood of extinction (global endangerment-GE). Here, we use a similar framework to inform priorities for language preservation by generating rankings for 350 Austronesian languages. Kavalan, Tanibili, Waropen and Sengseng obtained the highest EDGE scores, while Xârâcùù (Canala), Nengone and Palauan are among the most linguistically distinct, but are not currently threatened. We further provide a way of dealing with incomplete trees, a common issue for both species and language trees.