Evaluating Evidence of Mechanisms in Medicine
Evaluating Evidence of Mechanisms in Medicine

Author: Veli-Pekka Parkkinen

Publisher: Springer

Published: 2018-07-13

Total Pages: 131

ISBN-13: 3319946102

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This book is open access under a CC BY license. This book is the first to develop explicit methods for evaluating evidence of mechanisms in the field of medicine. It explains why it can be important to make this evidence explicit, and describes how to take such evidence into account in the evidence appraisal process. In addition, it develops procedures for seeking evidence of mechanisms, for evaluating evidence of mechanisms, and for combining this evaluation with evidence of association in order to yield an overall assessment of effectiveness. Evidence-based medicine seeks to achieve improved health outcomes by making evidence explicit and by developing explicit methods for evaluating it. To date, evidence-based medicine has largely focused on evidence of association produced by clinical studies. As such, it has tended to overlook evidence of pathophysiological mechanisms and evidence of the mechanisms of action of interventions. The book offers a useful guide for all those whose work involves evaluating evidence in the health sciences, including those who need to determine the effectiveness of health interventions and those who need to ascertain the effects of environmental exposures.

The Mechanism of Human Facial Expression
The Mechanism of Human Facial Expression

Author: G. -B. Duchenne de Boulogne

Publisher: Cambridge University Press

Published: 2006-11-02

Total Pages: 0

ISBN-13: 9780521032063

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In Mecanisme de la Physionomie Humaine, the great nineteenth-century French neurologist Duchenne de Boulogne combined his intimate knowledge of facial anatomy with his skill in photography and expertise in using electricity to stimulate individual facial muscles to produce a fascinating interpretation of the ways in which the human face portrays emotions. This book was pivotal in the development of psychology and physiology as it marked the first time that photography had been used to illustrate, and therefore "prove," a series of experiments. Duchenne's book, which contained over 100 original photographic prints pasted into an accompanying Album, was rare, even when it first appeared in 1862. Duchenne was a superb clinical neurologist and in this study he applied his enormous experience in neurological research to the question of the mechanism of human facial expression. Duchenne has been little cited and little known in this century; his book has been virtually unobtainable, and copies are available in only a few libraries in the United States and Europe.

Mechanism
Mechanism

Author: Domenico Bertoloni Meli

Publisher: University of Pittsburgh Press

Published: 2019-04-18

Total Pages: 295

ISBN-13: 0822986523

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The mechanical philosophy first emerged as a leading player on the intellectual scene in the early modern period—seeking to explain all natural phenomena through the physics of matter and motion—and the term mechanism was coined. Over time, natural phenomena came to be understood through machine analogies and explanations and the very word mechanism, a suggestive and ambiguous expression, took on a host of different meanings. Emphasizing the important role of key ancient and early modern protagonists, from Galen to Robert Boyle, this book offers a historical investigation of the term mechanism from the late Renaissance to the end of the seventeenth century, at a time when it was used rather frequently in complex debates about the nature of the notion of the soul. In this rich and detailed study, Domenico Bertoloni Melifocuses on strategies for discussing the notion of mechanism in historically sensitive ways; the relation between mechanism, visual representation, and anatomy; the usage and meaning of the term in early modern times; and Marcello Malpighi and the problems of fecundation and generation, among the most challenging topics to investigate from a mechanistic standpoint.

Beyond Mechanism
Beyond Mechanism

Author: Brian G. Henning

Publisher: Lexington Books

Published: 2013-02-01

Total Pages: 488

ISBN-13: 0739174371

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It has been said that new discoveries and developments in the human, social, and natural sciences hang “in the air” (Bowler, 1983; 2008) prior to their consummation. While neo-Darwinist biology has been powerfully served by its mechanistic metaphysic and a reductionist methodology in which living organisms are considered machines, many of the chapters in this volume place this paradigm into question. Pairing scientists and philosophers together, this volume explores what might be termed “the New Frontiers” of biology, namely contemporary areas of research that appear to call an updating, a supplementation, or a relaxation of some of the main tenets of the Modern Synthesis. Such areas of investigation include: Emergence Theory, Systems Biology, Biosemiotics, Homeostasis, Symbiogenesis, Niche Construction, the Theory of Organic Selection (also known as “the Baldwin Effect”), Self-Organization and Teleodynamics, as well as Epigenetics. Most of the chapters in this book offer critical reflections on the neo-Darwinist outlook and work to promote a novel synthesis that is open to a greater degree of inclusivity as well as to a more holistic orientation in the biological sciences.

Regulation of Tissue Oxygenation, Second Edition
Regulation of Tissue Oxygenation, Second Edition

Author: Roland N. Pittman

Publisher: Biota Publishing

Published: 2016-08-18

Total Pages: 117

ISBN-13: 1615047212

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This presentation describes various aspects of the regulation of tissue oxygenation, including the roles of the circulatory system, respiratory system, and blood, the carrier of oxygen within these components of the cardiorespiratory system. The respiratory system takes oxygen from the atmosphere and transports it by diffusion from the air in the alveoli to the blood flowing through the pulmonary capillaries. The cardiovascular system then moves the oxygenated blood from the heart to the microcirculation of the various organs by convection, where oxygen is released from hemoglobin in the red blood cells and moves to the parenchymal cells of each tissue by diffusion. Oxygen that has diffused into cells is then utilized in the mitochondria to produce adenosine triphosphate (ATP), the energy currency of all cells. The mitochondria are able to produce ATP until the oxygen tension or PO2 on the cell surface falls to a critical level of about 4–5 mm Hg. Thus, in order to meet the energetic needs of cells, it is important to maintain a continuous supply of oxygen to the mitochondria at or above the critical PO2 . In order to accomplish this desired outcome, the cardiorespiratory system, including the blood, must be capable of regulation to ensure survival of all tissues under a wide range of circumstances. The purpose of this presentation is to provide basic information about the operation and regulation of the cardiovascular and respiratory systems, as well as the properties of the blood and parenchymal cells, so that a fundamental understanding of the regulation of tissue oxygenation is achieved.

The Auditory System and Human Sound-Localization Behavior
The Auditory System and Human Sound-Localization Behavior

Author: John van Opstal

Publisher: Academic Press

Published: 2016-03-29

Total Pages: 438

ISBN-13: 0128017252

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The Auditory System and Human Sound-Localization Behavior provides a comprehensive account of the full action-perception cycle underlying spatial hearing. It highlights the interesting properties of the auditory system, such as its organization in azimuth and elevation coordinates. Readers will appreciate that sound localization is inherently a neuro-computational process (it needs to process on implicit and independent acoustic cues). The localization problem of which sound location gave rise to a particular sensory acoustic input cannot be uniquely solved, and therefore requires some clever strategies to cope with everyday situations. The reader is guided through the full interdisciplinary repertoire of the natural sciences: not only neurobiology, but also physics and mathematics, and current theories on sensorimotor integration (e.g. Bayesian approaches to deal with uncertain information) and neural encoding. - Quantitative, model-driven approaches to the full action-perception cycle of sound-localization behavior and eye-head gaze control - Comprehensive introduction to acoustics, systems analysis, computational models, and neurophysiology of the auditory system - Full account of gaze-control paradigms that probe the acoustic action-perception cycle, including multisensory integration, auditory plasticity, and hearing impaired