Search results for "classical"
showing 10 items of 2294 documents
Mechanism of reperfusion damage after thrombolysis and ‘direct PTCA’
1997
Summary There is general agreement between cardiologists, that reperfusion of the infarct related coronary artery (PTCA) is the method of choice for the treatment of an acute myocardial infarction. However, the method utilized for inducing a rapid and complete reperfusion is still discussed. Even if thrombolysis will remain the method of choice for the major part of the population, part of the patient cohort with acute infarction will be treated by direct PTCA. Rapid reperfusion of ischemic myocardium reduces infarct size by limiting infarct extension into the entire area at risk, although a reperfusion damage is induced in the core ischemic area. This reperfusion damage has been convincing…
Ethical issues: invasive ventilation in amyotrophic lateral sclerosis.
2012
The first man was a school headmaster. By his eye-gaze system he is able to order coins to enlarge his 10-year collection. His grandchildren extort presents from him in exchange for help. The second was a prefect and even now insists that the flowers in the garden represent the national flag. In spite of his gastrostomy, he still likes to sip his espresso from porcelain cups. The ventilation circuit 24/7 has not changed his custom to read the newspapers and listen to classical music in the living room. That girl is a young mum. She is fed by a tube, but she always makes her little child laugh with the dialectal phrases that she writes on the screen. The surgeon, every day in his electric wh…
The Role of the Amygdala in the Extinction of Conditioned Fear
2006
The amygdala has long been known to play a central role in the acquisition and expression of fear. More recently, convergent evidence has implicated the amygdala in the extinction of fear as well. In rodents, some of this evidence comes from the infusion of drugs directly into the amygdala and, in particular, into the basolateral complex of the amygdala, during or after extinction learning. In vivo electrophysiology has identified cellular correlates of extinction learning and memory in the lateral nucleus of that structure. Human imaging experiments also indicate that amygdaloid activity correlates with extinction training. In addition, some studies have directly identified changes in mole…
Hippocampal theta phase-contingent memory retrieval in delay and trace eyeblink conditioning
2017
Hippocampal theta oscillations (3–12 Hz) play a prominent role in learning. It has been suggested that encoding and retrieval of memories are supported by different phases of the theta cycle. Our previous study on trace eyeblink conditioning in rabbits suggests that the timing of the conditioned stimulus (CS) in relation to theta phase affects encoding but not retrieval of the memory trace. Here, we directly tested the effects of hippocampal theta phase on memory retrieval in two experiments conducted on adult female New Zealand White rabbits. In Experiment 1, animals were trained in trace eyeblink conditioning followed by extinction, and memory retrieval was tested by presenting the CS at …
Learning to learn: Theta oscillations predict new learning, which enhances related learning and neurogenesis
2012
Animals in the natural world continuously encounter learning experiences of varying degrees of novelty. New neurons in the hippocampus are especially responsive to learning associations between novel events and more cells survive if a novel and challenging task is learned. One might wonder whether new neurons would be rescued from death upon each new learning experience or whether there is an internal control system that limits the number of cells that are retained as a function of learning. In this experiment, it was hypothesized that learning a task that was similar in content to one already learned previously would not increase cell survival. We further hypothesized that in situations in…
Merit, Competition, Distinction
2018
The article presents a critique of competition by introducing a concept called 'distinction'. Competition is thought to work as a guarantee of the fairness of meritocratic procedures (merit-based recruiting in the job market or e.g. entrance examinations). However, fairness created by competition is, even at its best, only relative. This critique is then used a part of a larger critique of the role of merit in society.
L’épistémologie de Jean Bollack ou Bollack contre Bollack
2015
International audience; Jean Bollack’s philologische Wissenschaft aims to reach the “good lesson” of a text and to get the “original intent” of its author, in the true sense of these expressions. It is based on three main elements: the identification of biases that would lead to an incorrect interpretation; the syntactic analysis of the text and the discussion of the points of view of other scholars (i.e. a dialectical criticism). Bollack – despite his accuracy – does not question his own assumptions: 1) that the sense of a text is in the manuscripts we possess (or – in any case – it is recoverable through them); 2) the idea that the great texts are more insightful than others; and 3) the n…
Maternidades siniestras en los mind-game films (1990-2020)
2022
En este artículo pretendemos atender a la representación de la figura de la madre en los denominados por la academia como mind-game o puzzle films. Sin que ni el espectador ni, frecuentemente, las propias protagonistas lo sepan, las películas que estudiaremos sostienen su relato sobre subjetividades delirantes, sobre puntos de vista engañosos. La enunciación fílmica, cómplice del autoengaño, amnesia o trauma de los personajes, traslada su percepción alterada de la realidad al espectador. Aquí proponemos que una parte importante de este heterogéneo corpus plantea relatos en los que la causa del delirio es la pérdida dolorosa, y no aceptada, de un niño. A lo largo del texto procuraremos anali…
Constant Power Model in Arm Rotation—A New Approach to Hill’s Equation
2014
The purpose of this study was to further develop the constant power model of a previous study and to provide the final solution of Hill’s force-velocity equation. Forearm and whole arm rotations of three different subjects were performed downwards (elbow and shoulder extension) and upwards (elbow and shoulder flexion) with maximum velocity. These arm rotations were recorded with a special camera system and the theoretically derived model of constant maximum power was fitted to the experimentally measured data. The moment of inertia of the arm sectors was calculated using immersion technique for determining accurate values of friction coefficients of elbow and whole arm rotations. The experi…