This research aims to know the relationship between the variables teachers' pedagogical management and instrumental performance in students from an Artistic Higher Education School. It is a descriptive and correlational research that seeks to find the relationship between both variables. The sample of the study consisted of 30 students of the symphonic band to whom two instruments were applied: a questionnaire for pedagogical management and a checklist for instrumental performance in the symphonic bando The results of the research showed when applying the Spearman's correlation formula a significance level of 5%, with a significant correlation of Rho = 0.843. Based on that, it is determined that a very good pedagogical management of teachers produces a very good instrumental performance of the symphonic band in the population under study. Specifical1y, when analyzing the results of the specific cognitive and procedural competences of the teacher in relation to the instrumental performance, a moderate correlation was found; when analyzing attitudinal and teaching competences of the teacher in relation to the instrumental performance, a good correlation was found. It was concluded that there is a significant correlation between the variables teachers' pedagogical management and instrumental performance.

El presente trabajo de investigación tiene como propósito conocer la relación existente entre las variables: Gestión pedagógica docente y ejecución instrumental en estudiantes de una Escuela Superior de Formación Artística. Es una investigación de nivel descriptivo - correlacional que busca hallar la relación que existe entre ambas variables. La muestra del estudio estuvo conformada por 30 estudiantes de la banda sinfónica a quienes se le aplicó dos instrumentos: Cuestionario para la gestión pedagógica y una Lista de cotejo para la ejecución instrumental en la banda sinfónica. Los resultados de la investigación evidenciaron al aplicar la fórmula de correlación de Spearman un nivel de significancia del 5%, con una correlación significativa de Rho = 0.843; por lo cual se determina que a muy buena gestión pedagógica de los docentes se produce muy buena ejecución instrumental de la banda sinfónica en la población en estudio. De manera específica al analizar los resultados de la competencia cognitiva y procedimental del docente en relación con la ejecución instrumental se encontró una correlación moderada, en la competencia actitudinal y didáctica del docente en relación con la ejecución instrumental se encontró un nivel de correlación buena. Concluyendo que sí existe una correlación significativa entre las variables gestión pedagógica docente y ejecución instrumental.

The mother-child relationship is fundamental to the establishment and maintenance of synaptic networks and physiological and emotional development. Animal models including maternal separation have been used to study changes at behavioral and neurobiochemical levels. Due to the relevance of glial cells during development, our aim was to determine if short periods of maternal separation during breastfeeding induce permanent changes in a number of astrocytes labeled with the glial fibrillary acidic protein in different brain areas. Wistar rats were housed under standard laboratory conditions with reversed light/dark cycle; food and water ad libitum. Pups were separated from their mothers for 6 h daily during breastfeeding period. On day 22, pups were separately housed according to gender and treatment. At day 60, subjects were evaluated in the elevated plus maze and, after processing for immunohistochemistry, 20-μm sections were made. Prefrontal cortex, paraventricular nucleus, preoptic area, hippocampus and amygdala were localized. Labeled cells were quantified using Image-J program. Results showed that separated females had more entries into open arms and spend more time as compared with the control groups. In the prefrontal cortex we identified a decrease in staining cells in separated females, whereas there was an increase in staining cells in separated males. In the hippocampus and preoptic area, we observed a decrease only in separated males. We did not find any differences in the paraventricular nucleus or amygdala. Our results indicate that maternal separation during breastfeeding induces permanent changes in the number of astrocytes in different brain areas of both males and females.