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The main purpose of this book is to unify approaches and ideas in the field of aneural sensory transduction. This field has recently come to the attention of several research groups in various disciplines, and their number seems to be growing. Unfortunately, because of the diverse scientific backgrounds of the researchers in the field, the apparent heterogeneity of experimental techniques (i. e. , behavioral response analysis, sophisticated biochemical and genetic manipulations, conventional and pulsed laser spectroscopy) and theoretical approaches may be discouraging, for both the experienced worker and the new comer. Actually, this heterogeneity is more apparent than real, and unifying concepts, approaches, and ideas already exist, particularly with respect to all the questions concerning the role of membranes and their properties (such as ion permeability, electric potentials, and active transport) in the various steps of sensory perception and transduction processes. It is currently accepted that most, if not all, the fundamental facts in molecular sensory physiology of aneural organisms, be they chemosensory, photosensory, or geosensory, can ultimately be understood in terms of a few basic ideas. Each chapter of this book emphasizes and clarifies the role of mem brane properties and phenomena in the particular sensory response examined. Of course, in some cases, this task has been rather complex because of the limited amount of experimental data clearly supporting a membrane-based model of sensory transduction.
The main purpose of this book is to unify approaches and ideas in the field of aneural sensory transduction. This field has recently come to the attention of several research groups in various disciplines, and their number seems to be growing. Unfortunately, because of the diverse scientific backgrounds of the researchers in the field, the apparent heterogeneity of experimental techniques (i. e. , behavioral response analysis, sophisticated biochemical and genetic manipulations, conventional and pulsed laser spectroscopy) and theoretical approaches may be discouraging, for both the experienced worker and the new comer. Actually, this heterogeneity is more apparent than real, and unifying concepts, approaches, and ideas already exist, particularly with respect to all the questions concerning the role of membranes and their properties (such as ion permeability, electric potentials, and active transport) in the various steps of sensory perception and transduction processes. It is currently accepted that most, if not all, the fundamental facts in molecular sensory physiology of aneural organisms, be they chemosensory, photosensory, or geosensory, can ultimately be understood in terms of a few basic ideas. Each chapter of this book emphasizes and clarifies the role of mem brane properties and phenomena in the particular sensory response examined. Of course, in some cases, this task has been rather complex because of the limited amount of experimental data clearly supporting a membrane-based model of sensory transduction.
Present knowledge of the mechanisms underlying any single sensory modality is so massive as to discourage effort directed towards completeness. The idea underlying the structure of this volume on "Sensory transduction" was to select just a few topics of general interest, which are currently being investigated and for which a reasonably clear picture is now available. During the last five years there has been a revolution in the way sensory physi ologists think about transduction, and a series of exciting advances have been made in understanding the basic processes of photo transduction, chemotransduction and mechan otransduction. It is clear that in many cases the fundamental processes by which nature attains optimization of performance are similar, and that they have much in common with more general processes of signal recognition by living structures. The molecular events underlying the detection of photons by visual cells, the recognition of a given molecule by a chemoreceptor, or the level of a hormone in the extracellular fluid by a target cell, are all very similar, and involve the activation of a sequence of events leading to a secon d messenger. The 20 papers that form the present volume cover various topics in the field of sensory transduction. They originate from the lectures, seminars and discussions which made up the XVIII Course of the International School of Biophysics held in Erice, 9th - 19th June 1988.
Provides a comprehensive and up-to-date review of transduction in various sensory modalities.
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A NATO Advanced study Institute on "Receptors, Membrane Trans port and Signal Transduction", was held on the Island of Spet sai, Greece, from August 16-27, 1988, in order to consider re cent developments in membrane receptor research, membrane trans port and signal transduction mechanisms. These topics were put in the larger context of current knowledge on the structure and function of membranes; connections between different fields of research were established by in-depth dis cussions of energy transduction and transport mechanisms. The general principles of regulation by signal transduction and protein phosphorylation/dephosphorylation were presented in the context of specific cellular processes. Discussions included al so the role of protein tyrosine kinases which are structurally related to oncogene products and, therefore, implicated in va rious aspects of cell development and transformation. This book presents the content of the major lectures and a se lection of the most relevant posters presented during the course of the Institute. The book is intended to make the proceedings of the Institute accessible to a larger audience and to offer a comprehensive account of those topics on receptors, membrane transport and signal transduction that were discussed extensive ly during the course of the Institute. February 1989 The Editors CONTENTS I. G-PROTEINS, ADENYLATE CYCLASE AND PROTEIN PHOSPHORYLATION Selective regulation of G proteins by Cell surface receptors ......... .
Since the first TRP ion channel was discovered in Drosophila melanogaster in 1989, the progress made in this area of signaling research has yielded findings that offer the potential to dramatically impact human health and wellness. Involved in gateway activity for all five of our senses, TRP channels have been shown to respond to a wide range of st
Many advances have been made in the last decade in the understanding of the computational principles underlying olfactory system functioning. Neuromorphic Olfaction is a collaboration among European researchers who, through NEUROCHEM (Fp7-Grant Agreement Number 216916)-a challenging and innovative European-funded project-introduce novel computing p
This review covers the major systems of human physiology. These Notes are not exhaustive and assume that students have completed a course in human physiology and wish to refresh their memory in preparing for an examination. Students are encouraged to refer to a comprehensive textbook or to monographs while using this review. This book is a revised version of a review book used by our medical students for over ten years. Coverage of various topics in physiology is comparable to the percentage of questions on those topics in recent National Board, Part I examinations. Review questions follow every few pages of text in order to monitor your understanding of the just preceding material. Multiple choice questions are mainly of the two conventional types; "single best answer" questions and "multiple correct answer" questions. "Single co~ct answer" questions have lettered alternatives (Le. , A to E); "multiple correct answer" questions have numbered alternatives (Le. , 1, 2, 3 and 4). The latter questions are answered as follows: Answer A if 1, 2 and 3 are correct Answer B if 1 and 3 are correct Answer C if 2 and 4 are correct Answer D if 4 only is correct Answer E if all are correct National Board Examinations also use matching questions, and matching with four choices (Le. , Situation 1, Situation 2, Both 1 and 2, Neither 1 or 2). Review questions are numbered consecutively within each of the seven chapters.
This is the first book to provide a molecular level explanation of how the senses work, linking molecular biology with sensory physiology to deduce the molecular mechanism of a key step in sensory signal generation. The editors have assembled expert authors from all fields of sensory physiology for an authoritative overview of the mechanisms of sensory signal transduction in both animals and plants. They systematically cover phototransduction, chemosensory transduction, mechanotransduction, temperature and pain perception, as well as specialized receptors for electrical and magnetic signals. Required reading for biologists, physiologists and medical researchers with an interest in sensory physiology.