When these stimuli reach the brain, there is a specific response, principally in the form of muscular action. Now, each receptor can be adequately stimulated only by the particular factor or factors in the environment which created the necessity for the existence of that receptor. Thus there have arisen receptors for touch, for temperature, for pain, etc. The receptors for pain have been designated _nociceptors_ (nocuous or harmful) by Sherrington.英文原著 · 《The Origin and Nature of Emotions》
With this conception, the human body may be likened to a musical instrument--an organ--the keyboard of which is composed of the various receptors, upon which environment plays the many tunes of life; and written within ourselves in symbolic language is the history of our evolution. The skin may be the "Rosetta Stone" which furnishes the key.英文原著 · 《The Origin and Nature of Emotions》
It seems most probable that the site of the pain is in the brain-cells. If this be so, then what is the physical process by which the phenomena of pain are produced? The one hypothesis that can be tested experimentally is that pain is a phenomenon resulting from the rapid discharge of energy in the brain-cells. If this be true, then if every pain receptor of the body were equally stimulated in such a manner that英文原著 · 《The Origin and Nature of Emotions》
DARWIN, 12, 26, 30, 91, 127, 153 on phenomena of fear, 26 Disease, mechanistic theory of, 157 Distance receptors, discharge of energy through stimulation of, 25 Dog, spinal, 4 Dolley, 2, 10 Drugs, changes in brain-cells from, 113英文原著 · 《The Origin and Nature of Emotions》
NAGGING, 46 Nausea pains, 78 Nervous energy, cause of discharge of, 12 as result of trauma under inhalation anesthesia, 12 discharge of, role of summation in, 30 through representation of injury, 25 through stimulation of distance receptors, 25 psychic discharge, 25 Neurasthenia, sexual, 43 Neuroses, postoperative, 46 traumatic, 46 Noci-association, chemical, in infections, 48 Nociceptors, 14 diseases and injuries of regions not endowed with, 47英文原著 · 《The Origin and Nature of Emotions》
Amy, I recently read your paper on lesions In the olfactory receptors in the brain.美剧 · 《The Big Bang Theory》