[PDF] Plants And The Human Brain eBook

Author : David O. Kennedy
Publisher : Oxford University Press
Page : 395 pages
File Size : 43,89 MB
Release : 2014-01-09
Category : Science
ISBN : 0199914028

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We're all familiar with the idea that plant-derived chemicals can have an impact on the functioning of the human brain. Most of us reach for a cup of coffee or tea in the morning, many of us occasionally eat some chocolate, some smoke a cigarette or take an herbal supplement, and some people use illicit drugs. We know a great deal about the mechanisms by which the psychoactive components of these various products have their effects on human brain function, but the question of why they have these effects has been almost totally ignored. This book sets out to describe not only how, in terms of pharmacology or psychopharmacology, but more importantly why plant- and fungus-derived chemicals have their effects on the human brain. The answer to this last question resides, in part, with the terrestrial world's two dominant life forms, the plants and the insects, and the many ecological roles the 'secondary metabolite' plant chemicals are trying to play; for instance, defending the plant against insect herbivores whilst attracting insect pollinators. The answer also resides in the intersecting genetic heritage of mammals, plants, and insects and the surprising biological similarities between the three taxa. In particular it revolves around the close correspondence between the brains of insects and humans, and the intercellular signaling pathways shared by plants and humans. Plants and the Human Brain describes and discusses both how and why phytochemicals affect brain function with respect to the three main groups of secondary metabolites: the alkaloids, which provide us with caffeine, a host of poisons, a handful of hallucinogens, and most drugs of abuse (e.g. morphine, cocaine, DMT, LSD, and nicotine); the phenolics, including polyphenols, which constitute a significant and beneficial part of our natural diet; and the terpenes, a group of multifunctional compounds which provide us with the active components of cannabis and a multitude of herbal extracts such as ginseng, ginkgo and valerian.

Author : David O. Kennedy
Publisher : Oxford University Press
Page : 395 pages
File Size : 44,24 MB
Release : 2014-04
Category : Science
ISBN : 019991401X

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Discusses how plant-based chemicals affect and interact with the human brain and its evolution.

Author : Michael Pollan
Publisher : Penguin
Page : 289 pages
File Size : 28,85 MB
Release : 2021-07-06
Category : Body, Mind & Spirit
ISBN : 0593296915

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The instant New York Times bestseller | A Washington Post Notable Book | One of NPR's Best Books of the Year “Expert storytelling . . . [Pollan] masterfully elevates a series of big questions about drugs, plants and humans that are likely to leave readers thinking in new ways.” —New York Times Book Review From #1 New York Times bestselling author Michael Pollan, a radical challenge to how we think about drugs, and an exploration into the powerful human attraction to psychoactive plants—and the equally powerful taboos. Of all the things humans rely on plants for—sustenance, beauty, medicine, fragrance, flavor, fiber—surely the most curious is our use of them to change consciousness: to stimulate or calm, fiddle with or completely alter, the qualities of our mental experience. Take coffee and tea: People around the world rely on caffeine to sharpen their minds. But we do not usually think of caffeine as a drug, or our daily use as an addiction, because it is legal and socially acceptable. So, then, what is a “drug”? And why, for example, is making tea from the leaves of a tea plant acceptable, but making tea from a seed head of an opium poppy a federal crime? In This Is Your Mind on Plants, Michael Pollan dives deep into three plant drugs—opium, caffeine, and mescaline—and throws the fundamental strangeness, and arbitrariness, of our thinking about them into sharp relief. Exploring and participating in the cultures that have grown up around these drugs while consuming (or, in the case of caffeine, trying not to consume) them, Pollan reckons with the powerful human attraction to psychoactive plants. Why do we go to such great lengths to seek these shifts in consciousness, and then why do we fence that universal desire with laws and customs and fraught feelings? In this unique blend of history, science, and memoir, as well as participatory journalism, Pollan examines and experiences these plants from several very different angles and contexts, and shines a fresh light on a subject that is all too often treated reductively—as a drug, whether licit or illicit. But that is one of the least interesting things you can say about these plants, Pollan shows, for when we take them into our bodies and let them change our minds, we are engaging with nature in one of the most profound ways we can. Based in part on an essay published almost twenty-five years ago, this groundbreaking and singular consideration of psychoactive plants, and our attraction to them through time, holds up a mirror to our fundamental human needs and aspirations, the operations of our minds, and our entanglement with the natural world.

Author : Giorgio A. Ascoli
Publisher : MIT Press
Page : 247 pages
File Size : 11,1 MB
Release : 2015-04-24
Category : Science
ISBN : 0262329034

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An examination of the stunning beauty of the brain's cellular form, with many color illustrations, and a provocative claim about the mind-brain relationship. The human brain is often described as the most complex object in the universe. Tens of billions of nerve cells-tiny tree-like structures—make up a massive network with enormous computational power. In this book, Giorgio Ascoli reveals another aspect of the human brain: the stunning beauty of its cellular form. Doing so, he makes a provocative claim about the mind-brain relationship. If each nerve cell enlarged a thousandfold looks like a tree, then a small region of the nervous system at the same magnified scale resembles a gigantic, fantastic forest. This structural majesty—illustrated throughout the book with extraordinary color images—hides the secrets behind the genesis of our mental states. Ascoli proposes that some of the most intriguing mysteries of the mind can be solved using the basic architectural principles of the brain. After an overview of the scientific and philosophical foundations of his argument, Ascoli links mental states with patterns of electrical activity in nerve cells, presents an emerging minority opinion of how the brain learns from experience, and unveils a radically new hypothesis of the mechanism determining what is learned, what isn't, and why. Finally, considering these notions in the context of the cosmic diversity within and among brains, Ascoli offers a new perspective on the roots of individuality and humanity.

Author : Bret Stetka
Publisher : Timber Press
Page : 273 pages
File Size : 38,38 MB
Release : 2021-03-16
Category : Science
ISBN : 1604699884

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“A History of the Human Brain is a unique, enlightening, and provocative account of the most significant question we can ask about ourselves.” —Richard Wrangham, author of The Goodness Paradox Just 125,000 years ago, humanity was on a path to extinction, until a dramatic shift occurred. We used our mental abilities to navigate new terrain and changing climates. We hunted, foraged, tracked tides, shucked oysters—anything we could do to survive. Before long, our species had pulled itself back from the brink and was on more stable ground. What saved us? The human brain—and its evolutionary journey is unlike any other. In A History of the Human Brain, Bret Stetka takes us on this far-reaching journey, explaining exactly how our most mysterious organ developed. From the brain’s improbable, watery beginnings to the marvel that sits in the head of Home sapiens today, Stetka covers an astonishing progression, even tackling future brainy frontiers such as epigenetics and CRISPR. Clearly and expertly told, this intriguing account is the story of who we are. By examining the history of the brain, we can begin to piece together what it truly means to be human.

Author : Daniel Chamovitz
Publisher : Macmillan
Page : 192 pages
File Size : 50,83 MB
Release : 2012-05-22
Category : Gardening
ISBN : 0374288739

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Explores the secret lives of various plants, from the colors they see to whether or not they really like classical music to their ability to sense nearby danger.

Author : Eric Chivian
Publisher : Oxford University Press, USA
Page : 576 pages
File Size : 40,13 MB
Release : 2008-05-15
Category : Medical
ISBN :

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Edited and written by Harvard Medical School physicians Eric Chivian and Aaron Bernstein, Sustaining Life presents a comprehensive--and sobering--view of how human medicines, biomedical research, the emergence and spread of infectious diseases, and the production of food, both on land and in the oceans, depend on on the earth's disappearaing biodiversity. With a foreword by E.O. Wilson and a prologue by Kofi Annan, and more than 200 poignant color illustrations, Sustaining Life contributes essential perspective to the debate over how humans affect biodiversity and a compelling demonstration of the human health costs.

Author : Frantisek Baluska
Publisher : Springer
Page : 223 pages
File Size : 12,31 MB
Release : 2018-04-23
Category : Science
ISBN : 331975596X

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This book assembles recent research on memory and learning in plants. Organisms that share a capability to store information about experiences in the past have an actively generated background resource on which they can compare and evaluate coming experiences in order to react faster or even better. This is an essential tool for all adaptation purposes. Such memory/learning skills can be found from bacteria up to fungi, animals and plants, although until recently it had been mentioned only as capabilities of higher animals. With the rise of epigenetics the context dependent marking of experiences on the genetic level is an essential perspective to understand memory and learning in organisms. Plants are highly sensitive organisms that actively compete for environmental resources. They assess their surroundings, estimate how much energy they need for particular goals, and then realize the optimum variant. They take measures to control certain environmental resources. They perceive themselves and can distinguish between ‘self’ and ‘non-self’. They process and evaluate information and then modify their behavior accordingly. The book will guide scientists in further investigations on these skills of plant behavior and on how plants mediate signaling processes between themselves and the environment in memory and learning processes.

Author : Beronda L. Montgomery
Publisher : Harvard University Press
Page : 241 pages
File Size : 20,76 MB
Release : 2021-04-06
Category : Nature
ISBN : 0674259394

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An exploration of how plant behavior and adaptation offer valuable insights for human thriving. We know that plants are important. They maintain the atmosphere by absorbing carbon dioxide and producing oxygen. They nourish other living organisms and supply psychological benefits to humans as well, improving our moods and beautifying the landscape around us. But plants don’t just passively provide. They also take action. Beronda L. Montgomery explores the vigorous, creative lives of organisms often treated as static and predictable. In fact, plants are masters of adaptation. They “know” what and who they are, and they use this knowledge to make a way in the world. Plants experience a kind of sensation that does not require eyes or ears. They distinguish kin, friend, and foe, and they are able to respond to ecological competition despite lacking the capacity of fight-or-flight. Plants are even capable of transformative behaviors that allow them to maximize their chances of survival in a dynamic and sometimes unfriendly environment. Lessons from Plants enters into the depth of botanic experience and shows how we might improve human society by better appreciating not just what plants give us but also how they achieve their own purposes. What would it mean to learn from these organisms, to become more aware of our environments and to adapt to our own worlds by calling on perception and awareness? Montgomery’s meditative study puts before us a question with the power to reframe the way we live: What would a plant do?

Author : Garth Sundem
Publisher : Crown
Page : 258 pages
File Size : 19,21 MB
Release : 2012-03-06
Category : Reference
ISBN : 0307886131

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Blind Them…with SCIENCE! How much better would your life be if you had an army of Nobel Laureates, MacArthur ‘geniuses’ and National Medal of Science winners whispering tips in your ear about your body language, or how to resist that impulse purchase you’ll regret tomorrow, or when to sell your car—or even helping you trick your spouse into doing the dishes? With this mighty little tome, you can have the next best thing--because Brain Trust is packed with bite-sized scientific wisdom on our everyday challenges, hand-delivered to you direct from the galaxy’s biggest brains. Based entirely on interviews with an incredible lineup of luminaries from the fields of neuroscience, economics, anthropology, music, mathematics, and more, Brain Trust is full of cutting-edge science that’ll help you see the real world better—and smarter. Discover: --what advanced math can teach you about getting all your chores done today --how creating a ‘future self’ can help you shop smarter at the grocery store --what prairie voles can teach us about love --how the science of happiness can help you trick lawyers into doing charity work --the components of gullibility, and how they can help you scam-proof yourself --the secrets to building your very own army of cyborg beetles --how memetic information can help you exploit altruism for good…or evil --why eating for eight hours can help you lose weight --the behavioral economics behind selling your junk for big bucks on eBay --how to get more plasure for less price …And much, much more.