Brain injury: Assessment of hemineglect occurence and of attentional deficit through cancellation tasks

Hemineglect (HN) is a widely studied syndrome after unilateral lesions due to stroke. However, although there are some studies with HN rehabilitation of posttraumatic brain injury (TBI), there seems to be no published data about the prevalence of HN in TBI through cancellation tasks. Thus, the objective of this study was to characterize the occurrence of this syndrome and of attentional deficits in patients with TBI by means of the Bells Test and of a line cancellation task. The sample was comprised of 21 patients with TBI and 21 healthy controls matched by education, age and frequency of written language habits. There was a poorer performance of patients with TBI with a greater number of omissions on the left side and lower speed processing. In addition, suggestive signs of HN were found in 38 % of the sample of TBI patients. More research is needed to characterize clinical syndromes regarding the occurrence of HN after a TBI through the traditionally known cancellation paradigm.

Ciudad y espacio público, perspectivas complementarias y nuevos desafíos

La ciudad y los procesos que ésta desencadena en su entorno territorial han variado, de acuerdo con el momento histórico y contexto geográfico donde ocurrió, está ocurriendo o sucederá, por lo tanto, lo primero y lo segundo, son tan cambiantes, como lo son los elementos constitutivos de ese espacio ocupado, apropiado y gobernado.Son pocos los asuntos sobre los cuales coinciden las distintas comunidades académicas y disciplinas que se encargan del estudio de los procesos urbanos, como urbanistas, arquitectos, geógrafos, sociólogos, politólogos, ingenieros o planificadores; por ejemplo, con relación a la definición de lo urbano o lo qué podemos entender por ciudad; tal vez hay mayor acuerdo por lo que no es, como se constata con los espacios dedicados, exclusiva o principalmente a las actividades productivas agropecuarias. De la misma manera, sobre lo que se considera como espacio público, ya que algunos le dan un énfasis estructural y físico, como uno de los elementos rígidos que constituyen el espacio ocupado, mientras que otros, además de lo físico, rescatan de él referentes históricos, culturales y simbólicos.En la actualidad viene ganando audiencia la postura que combina lo físico y material de la ciudad y el espacio público, con lo inmaterial y simbólico de los mismos, lo que le confiere un nuevo sentido. De este tipo de convergencias, surge el escenario que contribuye a construir el ciudadano que requiere y demanda la ciudad.De acuerdo con lo anterior, el análisis que aquí se presenta se aborda a partir de tres aspectos relevantes: en primer lugar, se reiteran algunos de los caminos andados, para esbozar algunas de las nuevas perspectivas sobre la ciudad y el espacio público, tal como se sugiere en el título del artículo; en segundo lugar, relacionar aspectos históricos, conceptuales y aplicados sobre la ciudad y de esta con el espacio público, con base en el caso de Bogotá y finalmente plantear algunos de los desafíos que surgen de esta interacción, a partir de algunas reflexiones que buscan vincular esta temática con las ciencias sociales y en particular con la ciencia política.-----The city and the processes triggered by the city in its territorial environment have changed, according to the historical moment and the geographical context in which it happened, is happening, or will happen; therefore, the former and the latter are as changing as the elements of that occupied, appropriated, and governed space.There are very few subjects on which there is an agreement among the different academic communities and disciplines that study urban processes, such as town planners, architects, geographers, sociologists, political scientists, engineers, or planners. For example, regarding the definition of the urban matters or what we may understand as a city, a greater agreement may be found on what it is not, as shown with spaces exclusively or mainly dedicated to the productive agricultural/livestock activities. Likewise, regarding what is deemed as public space, because some people stress the structural and physical aspect as one of the rigid elements that comprise the occupied space, while others rescue, in addition to the physical, the historical, cultural, and symbolic references.The position that considers the physical and material city and public space combined with their immaterial and symbolic aspects has been gaining terrain lately, providing them with a whole new sense. From these convergences arises the scenario that contributes to the building of the citizenship required and demanded by the city.According to the foregoing, the analysis presented here is addressed from three relevant aspects: First, reiterating some of the already treated topics to outline some new perspectives on the city and the public space, as suggested in the title of this article; second, relating historical, conceptual, and applied aspects of the city and such aspects of the city related to the public space, based on the case of Bogotá; and finally, formulating some challenges arising form this interaction, based on certain thoughts that seek to link this topic with the Social Sciences and, in particular, with the Political Sciences.

Herramienta de detección y medición de las condiciones de riesgo laborales asociadas a la presentación de los desórdenes por trauma acumulativo en hombro

El movimiento en el complejo articular de hombro, al igual que en las demás partes del cuerpo se realiza gracias a los sistemas óseo, articular y muscular. Cuando se presentan movimientos repetitivos, posturas y fuerzas en el lugar de trabajo al desarrollar las tareas, se pueden originar una serie de patologías profesionales en los trabajadores ocupacionalmente expuestos. Estas patologías no solamente se asocian a estos factores de riesgo, sino también, a una concepción inadecuada del diseño del puesto de trabajo en dónde los trabajadores desarrollan su actividad laboral. se pretende a través de este proyecto de investigación dar a conocer una herramienta de observación, detección de éstos, y medición tridimensional de los movimientos que puedan llegar a representar un riesgo, facilitando la recolección de datos de forma precisa y rápida, así como la apreciación de las condiciones de trabajo, por parte de los profesionales interesados en Salud Ocupacional.

Reference values for handgrip strength in among healthy young adults

Background: Isometric grip strength, evaluated with a handgrip dynamometer, is a marker of current nutritional status and cardiometabolic risk and future morbidity and mortality. We present reference values for handgrip strength in healthy young Colombian adults (aged 18 to 29 years). Methods: The sample comprised 5.647 (2.330 men and 3.317 women) apparently healthy young university students (mean age, 20.6±2.7 years) attending public and private institutions in the cities of Bogota and Cali (Colombia). Handgrip strength was measured two times with a TKK analogue dynamometer in both hands and the highest value used in the analysis. Sex- and age-specific normative values for handgrip strength were calculated using the LMS method and expressed as tabulated percentiles from 3 to 97 and as smoothed centile curves (P3, P10, P25, P50, P75, P90 and P97). Results: Mean values for right and left handgrip strength were 38.1±8.9 and 35.9±8.6 kg for men, and 25.1±8.7 and 23.3±8.2 kg for women, respectively. Handgrip strength increased with age in both sexes and was significantly higher in men in all age categories. The results were generally more homogeneous amongst men than women. Conclusions: Sex- and age-specific handgrip strength normative values among healthy young Colombian adults are defined. This information may be helpful in future studies of secular trends in handgrip strength and to identify clinically relevant cut points for poor nutritional and elevated cardiometabolic risk in a Latin American population. Evidence of decline in handgrip strength before the end of the third decade is of concern and warrants further investigation

The impact of broadband quality standards on internet services market structure in Colombia

This paper develops a structural model which allows estimating the impact of regulatory decisions looking for the setting of download-speed standards on market structure and performance. We characterize a setting under which quality standards improve both service quality and availability. As to quality, we evaluate the impact of quality standards on the performance of local demand from a detailed database of broadband internet subscribers, discriminated by the main attributes of an internet subscription contract as location, supplier, monthly-fee, download- and upload-speed features. From these results, we are able to identify the effect of quality regulation on the behavior of internet providers in a differentiated product market approach. As a consequence, we are able to assert that the response of internet service providers to quality regulation is a more intense product differentiation that contributes to demand expansion and therefore to improve broadband penetration indicators.