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With a thorough exposition of the ancient practice of aromatics in China, India, Persia and Egypt and a modern scientific understanding of scent, this book provides a guide for mastering the use of essential oils.
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If we possessed a true, well established and undoubted theory concerning the function of the nerves in the human body, the principles of smell would be much easier to understand. So far, we do not know for certain whether the action of nerves takes place by means of a subtle fluid, which is instantaneously conveyed from the beginning of the nerves to their ends, or whether, as some think, some sort of vibratory movements is produced in them, or whether the stimulation should be considered as the only sufficient cause, to say nothing of the new opinion concerning the electrical force. Linnaeus Although much has been learned since the time of Linnaeus, it is still true that we do not yet possess "a true, well established and undoubted" theory of olfaction. The literature of the subject, however, has long been rather voluminous - the frequent assertions to the contrary are simply untrue - and is now growing rapidly. Moreover, quite a number of symposia on olfaction (or olfaction and taste) have been held during recent years. For example, in the U. S. A.
Handbook of Perception, Volume VIA Tasting and Smelling focuses on the psychophysics of tasting and smelling and covers topics ranging from food technology and the neurophysiology of taste to the chemistry of odor, the neural code, the olfactory process, and chemical signals in the environment. This volume is organized into five sections encompassing 10 chapters and begins with a historical overview of taste research, followed by a discussion on the biophysics and chemistry of taste and its phylogenetic basis in vertebrates. The focus then shifts to the nature of taste qualities, the psychophysical methods of studying them, and the influence on taste sensation of factors such as intensity, duration and area of stimulation. The important phenomenon of adaptation is well covered, with attention to the role of water. The book methodically introduces the reader to the pleasantness or unpleasantness of a food, the physicochemical basis of olfaction, information processing in the olfactory nerve pathway, and the relationship between molecular structure and odor. A chapter on the extraneous stimulation caused by industrial processes, the psychophysical foundation for applications of olfactory research, and real and potential applications in the realm of odor abatement concludes the volume. This book will serve as a basic source and reference work for psychologists and natural scientists, as well as for those who are interested in human perception.
The Perception of Odors presents concisely and clearly some of the important aspects in the study of olfaction such as perception, human pheromones, and odor pollution. The book consists of 11 detailed chapters. Chapters 1 and 2 serve as the introduction as it outlines the basic principles, historical development, and the anatomy and physiology of olfaction. A chapter on ""Psychophysics"" is included wherein it covers the history of the measurement of odors and developments in the psychophysics of smell. The following chapters deal mostly with areas of research such as odor masking, deodorization, adaptation, odor mixture, and memory. Chapter 9 tackles the relationship of smell, particularly the perception of odor, to other senses. The last two chapters discuss the possible future areas of research and problems in odor perception. This book is a valuable reference to students and researchers studying sensation and perception.