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Search Results: 1 - 10 of 229771 matches for " Fernando Torrealba L "
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La corteza prefrontal medial controla el alerta conductual y vegetativo: Implicancias en desórdenes de la conducta
Valdés G,José Luis; Torrealba L,Fernando;
Revista chilena de neuro-psiquiatría , 2006, DOI: 10.4067/S0717-92272006000300005
Abstract: the frontal lobe, the most human part of the brain (goldberg), has been intensely studied, particularly in the last decades. this region is crucial for the control of behavior, cognition, planning, and working memory. both behavior and higher cognitive abilities depend importantly on the arousal level, and on the autonomic responses that anticipate and accompany behaviors. in this review we will discuss the role played by the medial prefrontal cortex in controlling the level of vigilance and the autonomic and endocrine responses that are crucial for normal behavior. we will also discuss how dysfunctions of the medial prefrontal cortex resulting in the loss of the cortical control over arousal (both behavioral and vegetative) can help to explain the behavioral alterations observed in patients with posttraumatic stress, schizophrenia, attentional deficit and hyperactivity disorder and antisocial and aggressive behavior. additionally we will discuss how studies in rats may give us valuable information about of the mechanisms by which the medial prefrontal cortex is capable of controlling the arousal state, autonomic and emotional responses in humans
La corteza prefrontal medial controla el alerta conductual y vegetativo: Implicancias en desórdenes de la conducta The medial prefrontal cortex controls the behavioral and vegetative arousal: Implications for behavioral disorders
José Luis Valdés G,Fernando Torrealba L
Revista Chilena de Neuro-Psiquiatría , 2006,
Abstract: El lóbulo frontal, la parte más humana del cerebro, como lo propone E. Goldberg, ha llamado intensamente la atención de los investigadores en las últimas décadas. Esta región es clave en el control de la conducta, la personalidad, la memoria de trabajo, y en funciones cognitivas superiores. Sin embargo, tanto la conducta como las habilidades cognitivas superiores dependen de manera importante del estado de alerta, y de las respuestas autonómicas y emocionales asociadas. En esta revisión discutiremos acerca del papel que la corteza prefrontal medial juega en el control del alerta, y cómo alteraciones en la actividad de la corteza prefrontal medial, al afectar dicho control cortical, pueden explicar las alteraciones conductuales observadas en pacientes con estrés postraumático, esquizofrenia, déficit atencional y conductas antisociales y agresivas. Adicionalmente discutiremos cómo los estudios en la rata pueden darnos valiosa información sobre los mecanismos por los cuales la corteza prefrontal medial es capaz de manejar el alerta, el control autonómico y el control emocional The frontal lobe, the most human part of the brain (Goldberg), has been intensely studied, particularly in the last decades. This region is crucial for the control of behavior, cognition, planning, and working memory. Both behavior and higher cognitive abilities depend importantly on the arousal level, and on the autonomic responses that anticipate and accompany behaviors. In this review we will discuss the role played by the medial prefrontal cortex in controlling the level of vigilance and the autonomic and endocrine responses that are crucial for normal behavior. We will also discuss how dysfunctions of the medial prefrontal cortex resulting in the loss of the cortical control over arousal (both behavioral and vegetative) can help to explain the behavioral alterations observed in patients with posttraumatic stress, schizophrenia, attentional deficit and hyperactivity disorder and antisocial and aggressive behavior. Additionally we will discuss how studies in rats may give us valuable information about of the mechanisms by which the medial prefrontal cortex is capable of controlling the arousal state, autonomic and emotional responses in humans
Histamine and motivation
Fernando Torrealba,Maria E. Riveros,Jose L. Valdes
Frontiers in Systems Neuroscience , 2012, DOI: 10.3389/fnsys.2012.00051
Abstract: Brain histamine may affect a variety of different behavioral and physiological functions; however, its role in promoting wakefulness has overshadowed its other important functions. Here, we review evidence indicating that brain histamine plays a central role in motivation and emphasize its differential involvement in the appetitive and consummatory phases of motivated behaviors. We discuss the inputs that control histaminergic neurons of the tuberomamillary nucleus (TMN) of the hypothalamus, which determine the distinct role of these neurons in appetitive behavior, sleep/wake cycles, and food anticipatory responses. Moreover, we review evidence supporting the dysfunction of histaminergic neurons and the cortical input of histamine in regulating specific forms of decreased motivation (apathy). In addition, we discuss the relationship between the histamine system and drug addiction in the context of motivation.
The parietal association cortex of the rat
TORREALBA,FERNANDO; VALDéS,JOSé LUIS;
Biological Research , 2008, DOI: 10.4067/S0716-97602008000400002
Abstract: spatial cognition is a complex higher function in mammals and is involved in a variety of tasks that can be explored in the laboratory. in this review we will discuss the role of the posterior parietal/anteromedial cortex of rodents, also known as the parietal association cortex, and the hippocampal formation in spatial navigation. we will also discuss other higher associational functions of the posterior parietal/anteromedial cortex as they relate to dr. pinto-hamuy's contribution to understanding behavioral functions.
A tribute to Dr. Teresa Pinto-Hamuy
Luis Robles,Fernando Torrealba,Manuel Santos
Biological Research , 2008,
Abstract:
The parietal association cortex of the rat
FERNANDO TORREALBA,JOSé LUIS VALDéS
Biological Research , 2008,
Abstract: Spatial cognition is a complex higher function in mammals and is involved in a variety of tasks that can be explored in the laboratory. In this review we will discuss the role of the posterior parietal/anteromedial cortex of rodents, also known as the parietal association cortex, and the hippocampal formation in spatial navigation. We will also discuss other higher associational functions of the posterior parietal/anteromedial cortex as they relate to Dr. Pinto-Hamuy's contribution to understanding behavioral functions.
PERCEPCIóN DE LOS INDICADORES DE GESTIóN DE LA EMPRESA ELEOCCIDENTE
Sandra Torrealba,José O. Flores G.,Sandra L. Flores M.
Revista Venezolana de Análisis de Coyuntura , 2009,
Abstract: Para evaluar la percepción de los indicadores claves de gestión de la Gerencia de Comercialización de la empresa Eleoccidente-Zona Portuguesa por parte de los empleados, en el a o 2006 se aplicó un cuestionario tipo Likert-5 de 36 ítems a una muestra aleatoria estratificada de 62 individuos pertenecientes a cada uno de los niveles administrativos que conforman la organización. Para analizar los resultados del cuestionario se discriminó a los trabajadores en grupos, en función de la jerarquía formal y, también, en función de las similitudes de sus perspectivas. En el primer caso, el personal fue clasificado atendiendo a su nivel administrativo mientras que en el segundo caso se aplicó un análisis cluster. Con base a los promedios de las puntuaciones se concluyó que no hubo diferencias importantes en la percepción de los indicadores de gestión en función de los grupos jerárquicos formales, pero cuando se conformaron grupos informales las diferencias estadísticas se hicieron evidentes en la mayoría de los indicadores.
Rinofima severo
Tronocoso R,Antonio; Torrealba P,Ramón; Bozán S,Fernando; Lazo C,ángel;
Revista chilena de cirugía , 2012, DOI: 10.4067/S0718-40262012000200015
Abstract: rhinophyma is a progressively growing benign tumor that has the ability to distort the nasal form. even though, it is considered a rare subtype of rosacea, it is of great importance for the ability to create: psychic, aesthetic and functional disorders. this report describes a severe case of rhinophyma in a 52 years old male patient, the medical treatment and the surgical technique used for removal.
Rinofima severo Severe rhinophyma
Antonio Tronocoso R,Ramón Torrealba P,Fernando Bozán S,ángel Lazo C
Revista Chilena de Cirugía , 2012,
Abstract: El Rinofima es un tumor benigno de crecimiento progresivo con la capacidad de provocar severas alteraciones en la morfología nasal. Es considerado un subtipo de rosácea poco frecuente, sin embargo, es de gran relevancia por su capacidad de crear trastornos tanto estéticos como funcionales y psicológicos en las personas afectadas. Este reporte describe un caso severo de rinofima, en un paciente de género masculino de 52 a os, el tratamiento médico y la técnica quirúrgica que se utilizó para su remoción. Rhinophyma is a progressively growing benign tumor that has the ability to distort the nasal form. Even though, it is considered a rare subtype of rosacea, it is of great importance for the ability to create: psychic, aesthetic and functional disorders. This report describes a severe case of rhinophyma in a 52 years old male patient, the medical treatment and the surgical technique used for removal.
Las TIC y la metodología de proyectos de aprendizaje: Algunas experiencias en formación docente
Torrealba,Gualberto;
Educere , 2008,
Abstract: in this paper some possible links and advantages of the combination of communication and information technologies (cit) and the methodology of learning projects are analyzed. the author shows some experiences on project execution with the help of cits through several years at the upel-maturín. finally, the achievements accomplished in the education of future teachers are analyzed, among them, some finished products such as audiovisuals and educational software where is clear that important changes occurred in self-esteem, confidence and transversality understanding by the students who participated.
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