Estimulacion magnetica trascraneal en el desempeno motor en enfermedades del sistema nervioso central: Revision Sistematica

Introducción: El uso de la estimulación cerebral no invasiva en procesos de rehabilitación es de gran interés, por cuanto con mediación tecnológica se generan nuevas posibilidades de recuperación motora, a partir de la activación de la corteza cerebral. El objetivo del estudio es establecer la evidencia del uso terapéutico de la EMT, relacionado con el desempeño motor de pacientes con enfermedades del sistema nervioso central. Metodología: Se realizó una revisión sistemática de la literatura. Se incluyeron 10 estudios en el análisis cualitativo que incluyó la evaluación de calidad con la escala de Jadad y del riesgo de sesgo con la herramienta Cochrane. Fueron excluidos 1613 estudios. Se aplicó el protocolo del estudio para la extracción, revisión y validez de los estudios incluidos. Resultados: La evidencia disponible muestra resultados positivos del uso terapéutico de la EMT en el desempeño motor en aspectos como la aceleración, la fuerza de pinza y de agarre, la estabilidad y la fuerza muscular, así como una mejor velocidad de la marcha y una disminución en la frecuencia y severidad de los espasmos. Discusión: La EMT puede constituir una estrategia terapéutica para mejorar el desempeño motor en pacientes con ECV, Lesión Medular y enfermedad de Parkinson, que requiere más investigación por la heterogeneidad de los diseños y medidas de descenlace utilizados, así como por la alta variabilidad interindividual que hace complejo estandarizar los protocolos de su uso terapéutico.

An approach from positive psychology to mental health of university freshmen in Concepcion (Chile)

University is a demanding and changing environment for first year students, what could affect their mental health and their academic performance. Due these conditions, this research wanted to analyze mental health in freshmen of a private university in, Concepción, Chile, oriented by an approach from positive psychology. 554 were selected and surveyed to evaluate three variables: self-Esteem, satisfaction with life and optimism. furthermore, socio-demographic characteristics and mental health problems were assessed. Outcomes show that students evaluate positively themselves, their life and future. In addition, these variables are related with age, type of former school, religion, depression and anxiety. Systematic relationship found between these three strengths of mental health and their inverse relationship with the most prevalent problems in this area highlight the relevance that these three variables could have to define preventive and remedial strategies to promote student welfare.

Psychotherapeutical effects of stimulate positive connotation in the increase of forgiveness

This work presents different aspects that have been related to the aptitude to forgive, emphasizing its importance for the psychotherapeutic practice in order to promote an increase of such capacity. Existing empirical evidence tends to relate forgiveness to emotional, physical and psychological well-being of the persons, and shows that the way of providing sense to the experiences influences the process of forgiveness. An alternative to increase the aptitude to forgive is proposed and results of an experimental study with 60 patients demonstrate the psychotherapeutic effects of stimulating positive connotation in the increase of forgiveness. The independent variable was the type of psychotherapeutic approach applied and the dependant variables were measured with the Aptitude to Forgive Scale (CAPER) that evaluates the general predisposition of a subject to forgive, across four independent constructs: a) Self, b) Others, c) Situation, and d) Beliefs.

Loss of nerve fiber layer in HIV positive patients and comparative patterns in a series of cases in Bucaramanga, Colombia

Objective: The objective of this study is to conduct a description of the features of optic neuropathy associated with Human Immunodeficiency Virus in relation to their possible incidence within our population, regarding that there is no data in our population in terms of frequency of this pathology (1,2). Methodology: Descriptive cross-sectional study of a clinical series of patients infected with human immunodeficiency virus, but AIDS, and the thickness of optic nerve´s layer of fibers studied with OCT technology (optical coherence tomography), patients were cited once captured. OCT was performed by the same observer, by taking 3 shots and picking the one with better reliability. Patients were given personally to the Ophthalmologic Foundation of Santander to conduct the review called OCT (optical coherence tomography). Results: In terms of viral load variable, we found a clear correlation in which validates the hypothesis that lower viral load means a thicker layer of fibers finding statistically significant differences for the 6 hours in right eye and 12 and 6 hours in left eye. Comparison between the known nomogram of fiber layer thickness for the population of Bucaramanga, Santander and thickness found in our sample, we note a clear decrease in the upper and lower quadrants, specifically in 7 hours and 11 hours, being more important in 7 hours, showing statistically significant differences. Conclusions: The pattern  of thinning of the nerve fiber layer in HIV positive patients without AIDS, and antiretroviral treatment type HAART, showed a statistically significant thinning targeted at 7 hours and 11 hours, being higher in first. Viral load figures have a direct relation with loss fiber layer, showing a statistically significant difference for the 6 and 12 hours.

Media bias and central bank response. Evidence from the nominal exchange rate behavior in Colombia

Since 1991 Colombia has had a market-determined Peso - US Dollar Nominal Exchange Rate (NER), after more than 20 years of controlled and multiple exchange rates. The behavior (revaluation / devaluation) of the NER is constantly reported in news, editorials and op-eds of major newspapers of the nation with particular attention to revaluation. The uneven reporting of revaluation episodes can be explained by the existence of an interest group particulary affected by revaluation, looking to increase awareness and sympathy for help from public institutions. Using the number of news and op-eds from a major Colombian newspaper, it is shown that there is an over-reporting of revaluation episodes in contrast to devaluation ones. Secondly, using text analysis upon the content of the news, it is also shown that the words devaluation and revaluation are far apart in the distribution of words within the news; and revaluation is highly correlated with words related to: public institutions, exporters and the need of assistance. Finally it is also shown that the probability of the central bank buying US dollars to lessen revaluation effects increases with the number of news; even though the central bank allegedly intervenes in the exchange rate market only to tame volatility or accumulate international reserves.

Pobreza, Empleo y Distribución del Ingreso en las Zonas Rurales de Colombia, Durante la Década de 1990. Una Revisión de Literatura

En este trabajo se examinan los más importantes estudios realizados sobre la pobreza, el empleo y la distribución del ingreso en zonas rurales de Colombia, con especial referencia a la década de 1990. Aunque hay cierta dificultad para identificar los “hechos estilizados” que caracterizan la evolución de estas variables, durante el período de interés, los resultados de la revisión permiten indicar lo siguiente: la pobreza rural tiende a disminuir en el largo plazo, aunque se ve afectada negativamente por el ciclo económico y por la forma como interactúa con el resto de la economía. El empleo rural disminuye su participación en el empleo total y tiende a adquirir características que lo asimilan más al empleo urbano, en la medida en que parece “terciarizarce”. Existe un sesgo antirural que determina que la brecha de ingresos rural-urbana se amplíe secularmente; en tanto que las reformas económicas introducidas a comienzos de la década tuvieron una incidencia positiva en la disminución de la concentración del ingreso rural.

Apoyo social e ideación suicida en pacientes con cáncer

El diagnóstico de cáncer ha sido asociado con un alto riesgo de presentar ideación suicida en comparación con la población no oncológica, sin embargo se ha considerado al apoyo social como un factor protector para la ocurrencia de esta conducta. La presente investigación tuvo como objetivo identificar la relación entre el apoyo social percibido y la ideación suicida en 90 pacientes oncológicos adultos en Bogotá, bajo la hipótesis de que a mayor apoyo social percibido, menor presencia de ideación suicida. Se midió la variable de apoyo social a través del cuestionario Duke UNC y la ideación suicida a través de cuatro instrumentos: Escala de Ideación Suicida (SSI), Escala de Desesperanza de Beck (BHS), el ítem 9 del Inventario de Depresión de Beck (BDI-IA) y una entrevista semiestructurada. Los resultados mostraron que no existe relación entre el apoyo social percibido y la ideación suicida. Por otro lado se identificó una prevalencia de suicidio entre 5,6% y 22,77%, confirmando que el paciente con cáncer considera el suicidio y es fundamental evaluar esta variable en esta población. Se considera importante continuar con la realización de investigaciones que permitan generalizar los resultados a la población oncológica colombiana.

Does uncertainty cause inertia in decision making? An experimental study of the role of regret aversion and indecisiveness

Previous research has shown that often there is clear inertia in individual decision making---that is, a tendency for decision makers to choose a status quo option. I conduct a laboratory experiment to investigate two potential determinants of inertia in uncertain environments: (i) regret aversion and (ii) ambiguity-driven indecisiveness. I use a between-subjects design with varying conditions to identify the effects of these two mechanisms on choice behavior. In each condition, participants choose between two simple real gambles, one of which is the status quo option. I find that inertia is quite large and that both mechanisms are equally important.