Análisis de dos métodos de evaluación de la motilidad ocular mediante eyetracker

La motilidad ocular es una habilidad del sistema visual de suma importancia a la hora de percibir la imagen de objetos de interés, es una función que estamos realizando constantemente. Debido a esta importancia, el estudio de la motilidad ocular es fundamental para cerciorarnos de su correcto funcionamiento. El objetivo de este trabajo es valorar la motilidad ocular, en concreto los movimientos sacádicos y las fijaciones, mediante el test King-Devick (KD) y el test Visual Tracing Test (VTT) medidos con eye tracker para posteriormente analizar los resultados. Para ello, han sido evaluados 59 voluntarios de entre 18 y 30 años a los que se les realizó un cuestionario de síntomas, una valoración optométrica y las dos pruebas de motilidad ocular con el eye tracker. Como resultados se obtuvo que en el VTT los tiempos de realización y la cantidad de sacádicos y fijaciones aumentaba conforme se avanzaba en la realización del test y este aumentaba su dificultad, mientras que en el KD los valores que aumentan, conforme se avanzaba en el test y su dificultad se incrementaba, eran los tiempos de realización y el número de fijaciones. Se han encontrado correlaciones tanto directas como inversas entre distintas variables medidas en el estudio. Los resultados del test KD en esta investigación han coincidido con estudios previamente realizados, mientras que estudios del VTT solo existen en poblaciones jóvenes y con métodos de medida diferente, sin embargo, podemos comparar nuestros resultados con la tabla de normas para este test. Como conclusión, este estudio es un análisis que aporta una base de datos de una serie de parámetros de la motilidad ocular para una población joven adulta, los valores del KD son similares a los obtenidos en estudios previos, la puntuación del VTT esta por encima de la tabla de normas ya que esta está destinada a sujetos de 12 años de máximo, las variables de duración y velocidad media de los sacádicos están correlacionadas entre ambos test, la técnica de evaluación con eye tracker es una técnica eficaz y por último, hay que tener en cuenta el método de medición de los tiempos de realización ya que, pueden diferir ya se haga con el propio eye tracker o con cronómetro.<br /

intervención de terapia ocupacional en ictus isquémico

Intervención hospitalaria desde terapia ocupacional en un caso de ictus isquémico que deriva en hemiplejía izquierda

Instant messaging as an informative source in organizational communication: WhatsApp Business in Mexico and Spain

WhatsApp es el servicio de mensajería más empleado en México y en España. Esta investigación es pionera en evaluar la implantación y los mecanismos de interacción de WhatsApp Business, la versión específica que la aplicación ha creado para las organizaciones. A partir de una muestra compuesta por 200 empresas, los resultados presentan un estudio comparativo entre ambos países. Las conclusiones apuntan a un nivel bajo de implementación y carencias significativas en el desarrollo dialógico, por lo que se diagnostica la necesidad de adaptarse a los espacios habituales de participación ciudadana.WhatsApp is the most used messaging service in Mexico and Spain. This research is innovative in evaluating the implementation and interaction mechanisms of WhatsApp Business, a specific version of the app that has been created for companies. From a sample made up of 200 companies, presented here is a comparative study of both countries. The results show a low level of implementation and significant deficiencies in dialogic development. Hence, the need to adapt to the usual spaces of citizen participation is identified.S

Relationship between Resilience and Self-regulation: A Study of Spanish Youth at Risk of Social Exclusion

The Supplementary Material for this article can be found online at: http://journal.frontiersin.org/article/10.3389/fpsyg.2017.00612/full#supplementary-materialThe ability to self-regulate behavior is one of the most important protective factors in relation with resilience and should be fostered especially in at-risk youth. Previous research has characterized these students as having behaviors indicating lack of foresight. The aim of the present study was to test the hypothetical relationship between these personal variables. It was hypothesized that self-regulation would be associated with and would be a good predictor of resilience, and that low-medium-high levels of self-regulation would lead to similar levels of resilience. The participants were 365 students -aged 15 and 21- from Navarre (Spain) who were enrolled in Initial Vocational Qualification Programs (IVQP). For the assessment, the Connor Davidson Resilience Scale (CD-RISC) and the Short Self-Regulation Questionnaire (SSRQ) were applied. We carried out linear association analyses (correlational and structural) and non-linear interdependence analyses (MANOVA) between the two constructs. Relationships between them were significant and positive. Learning from mistakes (self-regulation) was a significant predictor of coping and confidence, tenacity and adaptation, and tolerance to negative situations (resilience). Likewise, low-medium-high levels of self-regulation correlated with scores on resilience factors. Implications of these results for educational practice and for future research are discussed.Motivational-affective strategies of personal self-regulation and coping with stress in the university teaching-learning process. Ref. EDU2011-24805 (2012-2015). Ministry of Economy and Competitiveness (Spain) and FEDER Found (EU)

Relation between Droplet Size Distributions and Physical Stability for Zein Microfluidized Emulsions

Zein, a subproduct of the food industry and a protein, possesses limited applications due to its high hydrophobic character. The objective of this research was to investigate the influence of homogenization pressure and cycles on the volumetric mean diameter (D4,3), span values, and Turbiscan Stability Index (TSI) using the response surface methodology for microfluidized emulsions containing zein as a unique stabilizer. Results showed that homogenization pressure seems to be the most influential parameter to obtain enhanced physical stability and droplet size distributions, with the optimum being 20,000 psi. Interestingly, the optimum number of cycles for volumetric diameter, span value, and TSI is not the same. Although a decrease of D4,3 with number of cycles is observed (optimum three cycles), this provokes an increase of span values (optimum one cycle) due to the recoalescence effect. Since physical stability is influenced by D4,3 and span, the minimum for TSI is observed at the middle level of the cycles (2 cycles). This work highlights that not only volumetric diameter, but also span value must be taken into consideration in order to obtain stable zein emulsions. In addition, this study wants to extend the limited knowledge about zein-based emulsions processed with a Microfluidizer device

Identifying engagement and associated factors in nursing students: An exploratory study

Background Burnout and engagement in health students surpass work life. Although levels of burnout in Nursing students are high, academic engagement is an understudied topic in Nursing, which has shown benefits. The aims were to know the level of engagement of Nursing students and to identify factors that prompt higher levels of engagement. Methods An exploratory study was conducted during 2019 in three Universities in Spain. The UWES-S-17 questionnaire was used. Results The sample consisted of 808 Nursing students. An average level of engagement was found. Engagement differed significantly by gender and age, with females and older students showing greater attitudes. Participants in the second year showed lower scores in the willingness to dedicate effort and persistence than those in the first and third year (p < 0.05). Conclusions The identification of the level of engagement and factors involved are an opportunity to probe into this approach by reinforcing positive attitudes in Nursing students. These findings show the need to seek strategies through specific educational interventions and policies. Engagement should be upheld throughout the degree and once they enter the job market to ensure the well-being during academic and future work life, a high-quality nursing care and patient safetyS

Supplementation with Two New Standardized Tea Extracts Prevents the Development of Hypertension in Mice with Metabolic Syndrome

Hypertension is considered to be both a cardiovascular disease and a risk factor for other cardiovascular diseases, such as coronary ischemia or stroke. In many cases, hypertension occurs in the context of metabolic syndrome (MetS), a condition in which other circumstances such as abdominal obesity, dyslipidemia, and insulin resistance are also present. The high incidence of MetS makes necessary the search for new strategies, ideally of natural origin and with fewer side effects than conventional pharmacological treatments. Among them, the tea plant is a good candidate, as it contains several bioactive compounds such as caffeine, volatile terpenes, organic acids, and polyphenols with positive biological effects. The aim of this study was to assess whether two new standardized tea extracts, one of white tea (WTE) and the other of black and green tea (CTE), exert beneficial effects on the cardiovascular alterations associated with MetS. For this purpose, male C57/BL6J mice were fed a standard diet (Controls), a diet high in fats and sugars (HFHS), HFHS supplemented with 1.6% WTE, or HFHS supplemented with 1.6% CTE for 20 weeks. The chromatography results showed that CTE is more concentrated on gallic acid, xanthines and flavan-3-ols than WTE. In vivo, supplementation with WTE and CTE prevented the development of MetS-associated hypertension through improved endothelial function. This improvement was associated with a lower expression of proinflammatory and prooxidant markers, and—in the case of CTE supplementation—also with a higher expression of antioxidant enzymes in arterial tissue. In conclusion, supplementation with WTE and CTE prevents the development of hypertension in obese mice; as such, they could be an interesting strategy to prevent the cardiovascular disorders associated with Met

Hipersuperficies isoparamétricas en el espacio hiperbólico complejo CHn

Se presenta la clasificación de las hipersuperficies isoparamétricas del espacio hiperbólico complejo CHn, siguiendo el trabajo realizado en J. C. Díaz-Ramos, M. Domínguez-Vázquez, V. Sanmartín-López, Isoparametric hypersurfaces in complex hyperbolic spaces, Adv. Math. 314 (2017), 756-805.Xunta de GaliciaPrograma de Formación del Profesorado UniversitarioFundación Barrié de la Maz

Lagrangian translators under mean curvature flow

We provide a new construction of Lagrangian surfaces in C2 in terms of two planar curves. When we take such curves as appropriate solutions of the curve shortening problem, including self-shrinking and self-expanding curves or spirals, we will obtain translating solitons which generalize the Joyce, Lee and Tsui ones in dimension two D. Joyce, Y.-I. Lee, and M.-P. Tsui. Self-similar solutions and translating solitons for Lagrangian mean curvature flow. J. Differential Geom. 84 (2010), no. 1, 127-161. Finally, we characterize locally all examples in terms of an analytical condition on the Hermitian product of the position vector of the immersion and the translating vector that allows us separation of variables. As a consequence we get the classification of the Hamiltonian stationary Lagrangian translating solitons for Lagrangian mean curvature flow in complex Euclidean plane. This work is based in I. Castro and A. M. Lerma. Translating solitons for Lagrangian mean curvature flow in complex Euclidean plane. Internat. J. Math. 23 (2012), no. 10, 1250101-1-1250101-16.Ministerio de Economía y CompetitividadFondo Europeo de Desarrollo RegionalJunta de Andalucí

Totally umbilic null hypersurfaces in generalized Robertson-Walker spaces

Using a correspondence between totally umbilic null hypersurfaces in generalized Robertson-Walker spaces and twisted decompositions of the fibre we show that nullcones are the unique totally umbilic null hypersurfaces in the closed Friedmann Cosmological model and a uniqueness result for dual pairs of totally umbilic null hypersurfaces in Reissner-Nordström and De Sitter-Schwarzschild spacetimes.Junta de AndalucíaMinisterio de Economía y CompetitividadFondo Europeo de Desarrollo Regiona