The Control of Human Arm Movement Models and Mechanical Constraints

A serial-link manipulator may form a mobile closed kinematic chain when interacting with the environment, if it is redundant with respect to the task degrees of freedom (DOFs) at the endpoint. If the mobile closed chain assumes a number of configurations, then loop consistency equations permit the manipulator and task kinematics to be calibrated simultaneously using only the joint angle readings; endpoint sensing is not required. Example tasks include a fixed endpoint (0 DOF task), the opening of a door (1 DOF task), and point contact (3 DOF task). Identifiability conditions are derived for these various tasks.

Sex differences in oppositional defiant disorder

Resumen tomado de la publicaci??n

Attention training in Attention Deficit Hyperactivity Disorder

Resumen tomado de la publicaci??n

MCMI-II borderline personality disorder in anorexia and bulimia nervosa. 'Trastorno l??mite de personalidad seg??n el MCMI-II en la anorexia y bulimia nerviosas'

Resumen tomado de la publicaci??n

Hyperreflexivity as a condition of mental disorder : A clinical and historical perspective. 'La hiperreflexividad como condici??n de los trastornos mentales : una perspectiva cl??nica'

Resumen tomado de la publicaci??n. Resumen tambi??n en ingl??s

The Open Education Movement: OERs and MOOCs

This presentation is based around a conference keynote presentation developed in April 2013.

Diferencias en la experiencia subjetiva entre depresión unipolar y bipolar

En la depresión unipolar el estado de ánimo predominante es la tristeza y la experiencia corporal es de un cuerpo que se siente más cómodo con la quietud que con la actividad, parecido a la pereza de la vida cotidiana. En la depresión bipolar el estado de ánimo predominante es de apagamiento emocional. La experiencia corporal es de un cuerpo pesado, cansado, un elemento que se interpone entre los deseos de actuar y la realización de las acciones y que se vuelve un obstáculo para el movimiento. Además, en la depresión bipolar hay mayor bradipsíquia, dificultad para concentrarse y desesperanza que en la unipolar. Se realizó una investigación de tipo cualitativo, exploratorio, de las experiencias subjetivas (de primera persona) de un grupo de pacientes con depresión unipolar y bipolar. Se utilizó entrevistas en profundidad de orientación fenomenológica.

Enfoque del paciente con trastornos del sueño

La importancia del sueño y las patologías relacionadas con el mismo son ampliamente reconocidas en el campo de la medicina y la neurología, sin embargo la mayoría de neurólogos dedican muy poco tiempo al estudio de estas entidades y muy raramente durante la valoración de los pacientes se indaga acerca de la presencia de trastornos relacionados con el sueño. Esto es sorprendente si tenemos en cuenta que pasamos casi un tercio de la vida durmiendo, además de la alta incidencia de trastornos de sueño en la población general. A continuación revisaremos los principales trastornos del sueño, su diagnóstico y tratamiento.

Sensibilidad del cuestionario anamnésico de síntomas de miembro superior y columna desarrollado por la unidad de investigación de ergonómica de postura y movimiento (EPM) desde la perspectiva de la fisioterapia en Colombia

El propósito de este estudio es evaluar la sensibilidad, especificidad y valores predictivos del Cuestionario Anamnésico de Síntomas de Miembro Superior y Columna (CASMSC) desarrollado por la Unidad de Investigación de Ergonomía de Postura y Movimiento (EPM). Se realizó un estudio descriptivo de tipo correlacional, mediante el análisis de datos secundarios de una base de datos con registros de trabajadores de la industria de alimentos (n=401) en el año 2013, a quienes se les había aplicado el CASMSC, así como una evaluación clínica fisioterapéutica enfocada en los mismos segmentos corporales; esta última utilizada como prueba de oro. Para analizar si existían diferencias estadísticas por edad, antigüedad y género se aplicó el análisis de varianza de una vía. La sensibilidad, especificidad y valores predictivos del CASMSC se informan con sus respectivos intervalos de confianza (95%). La prevalencia de umbral positivo para sospecha de Desorden Músculo Esquelético (DME) tanto de miembro superior como de columna se encontró muy por encima de la media nacional para el sector. La sensibilidad del CASMSC para miembro superior estuvo en el rango de un 80% a 94,57% y para columna cervical y lumbar fue de 36,4% y 43,4%, respectivamente. Para la región dorsal fue casi del doble de las otras dos regiones (85,7%). El CASMSC es recomendable en su apartado para miembro superior dado a su alto nivel de sensibilidad.

Students’ movement and participation in Latin-American psychology: historical and future perspectives

The historiographical paper presented is about the students’ activism and participation in the Latin American psychology. This aims are: 1) to provide a brief historic overview of the Latin American psychology; 2) to review on the students’ participation in the Latin American psychology; 3) to raise students’ future perspectives for the Latin American psychology. It is recognized that there is an extensive past of Latin American psychology and an emerging historiographical work that re fl ects that past.However, there are several historiographical gaps not covered yet by the investigations in the region. In this context, this paper wants to contribute to the study of the students’ activism and participation in the Latin American psychology construction. The historical perspective is supported by the renewed historiographical conception called instant history” which focuses on ancient and recent history at the same time. Indirect sources were used: articles, monographs and compiled editions.

Stress and depression in informal caregivers of patients with bipolar affective disorder

This study aims to establish the stress and depression´s prevalence in informal primary caregivers of patients with bipolar affective disorder of the Clínica de Nuestra Señora de la Paz (Bogotá, Colombia). The sample consisted of 40 informal primary caregivers who were tested by several tools: a survey filter, a sociodemographic record, the Beck Depression Inventory (BDI) and the Daily Stress Questionnaire. Results indicate that there is much more presence of depression than of daily stress in the sample. 

Autobiographical Memory for Stressful Events, Traumatic Memory and Posttraumatic Stress Disorder: A Systematic Review

Stressors and traumatic events may contribute to the development of many psychopathologies, PTSD among them. People with this disorder can present significant cognitive impairments and losses in memory, particularly autobiographical memory (AM).This paper aims to present a systematic review of literature considering changes on autobiographical memory in people exposed to potentially traumatic stressors. Therefore, we performed a computerized search in databases PsycINFO, PubMed, Web of Science and Pilots in March 2012.A total of 29 articles were selected and grouped into three categories: studies comparing Trauma X PTSD, studies comparing PTSD X Trauma X Control and comparison studies according to post-traumatic symptoms. Results demonstrate that people with PTSD presents alterations in a larger number of AM components compared to the cases in which PTSD did not developed. In the same way, subjects never exposed to trauma did not demonstrate significant alterations on  AM when compared to the other groups. The results of this study allowed concluding that changes of some components of the AM are primarily associated with PTSD, but it was not possible to clarify whether such changes are related to the timely development of the disorder, or if they are also observed in traumatic memories even in the absence of disorder.

Brain Tumour, Mood Disorder and Encephalopathy. Discusion of the Clinical Case Presented in Volume 6, Number 2

We report a case of a 65 years old female patient, who was admitted to the hospital with non specific neurological symptoms and who had preliminary imagenological findings of an extra-axial tumor mass (a meningioma of the sphenoid’s wing), which was taken to complete surgical removal. Afterwards, she developed progressive neurologic deterioration until her death. The final diagnosis was acute spongiform encephalophaty, and was obtained by cerebral biopsy. Spongiform encephalopathy was described, almost a century ago, as the Creutzfeldt-Jakob Disease, poorly diagnosed in our environment because of its low frequency and uncommon onset, which starts with a mood disorder followed by a phase of dementia and a final fatal outcome. The gold standard for the diagnosis is based on a biopsy or an autopsy of the brain, with immunohistochemical stains for the prionic abnormal protein.

Brain Tumour, Mood Disorder and Encephalopathy. Discusion of the Clinical Case Presented in Volume 6, Number 2

We report a case of a 65 years old female patient, who was admitted to the hospital with non specific neurological symptoms and who had preliminary imagenological findings of an extra-axial tumor mass (a meningioma of the sphenoid’s wing), which was taken to complete surgical removal. Afterwards, she developed progressive neurologic deterioration until her death. The final diagnosis was acute spongiform encephalophaty, and was obtained by cerebral biopsy. Spongiform encephalopathy was described, almost a century ago, as the Creutzfeldt-Jakob Disease, poorly diagnosed in our environment because of its low frequency and uncommon onset, which starts with a mood disorder followed by a phase of dementia and a final fatal outcome. The gold standard for the diagnosis is based on a biopsy or an autopsy of the brain, with immunohistochemical stains for the prionic abnormal protein.