The Brain 在线电子书 图书标签:
发表于2024-11-07
The Brain 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024
Introduction:<br >The Enchanted Loom<br > very cell of the human body is ruled by<br > the brain. Its commanding presence orders<br > sensation, movement, thought, a lifetime<br >of memory and dream. What makes this so is the<br >central nervous system, a maze of nerve fibers<br >linking all areas of the body to cells in the fabric<br >of the brain. Within that "enchanted loom," ro-<br >manticized physiologist Sir Charles Sherrington,<br >"millions of flashing shuttles weave a dissolving<br >pattern, always a meaningful pattern, though<br >never an abiding one."<br > Object of mystery and superstition through<br >most of history, mankind s brain has revealed it-<br >self only in recent centuries. Ancient Greeks rea-<br >soned that thought was "the soul s walk abroad."<br >Thinking about the brain, seeking ways to un-<br >ravel its infinite mysteries, inspired the minds of<br >great men--St. Augustine, Leonardo da Vinci,<br >Descartes, Freud.<br > Anthropologist Loren Eiseley noted that both<br >gorilla and human have "appealingly similar"<br >brains at birth. But the human s triples in size the<br >first year, growing "unlike anything else we<br >know in the animal world." Problem solving,<br >language, creating works of art--all bear wit-<br >ness to humankind s unique birthright.<br > Seeds of thought lie in furrows of dark tissue<br >that cover the brain like a layer of fertile topsoil.<br >From here stem conscious acts, speaking one s<br >mind -- and changing it. Within the brain s lobes<br >echo sounds, awakening imaginations. Impulses<br >of sight, rocketing through these spaces, stir<br >memories. Deeper in the brain s core are rooted<br >the origins of feelings, our pleasures and sorrows.<br >Among the emotions twine tendrils of smell,<br >sensing nostalgia s past.<br > We may see, through the eyes of science, ever<br >more of the enchanted loom. To unveil what is<br >known about the brain -- and what is not -- is to<br >stretch the limits of imagination. Future discov-<br >eries will propel man to new thresholds of awe.<br >
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The Brain 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024