Word: physiologists
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Kohn is a radiologist, biologist and physiologist who has done research in mutagenic rates and agents that cause mutations in man and other animals...
...cannot wait for natural selection to change him, some scientists warn, because the process is much too slow. Yale Physiologist José Delgado likens the human animal to the dinosaur: insufficiently intelligent to adapt to his changing environment. Caltech Biophysicist Robert Sinsheimer calls men "victims of emotional anachronisms, of internal drives essential to survival in a primitive past, but undesirable in a civilized state." Thus, by his own efforts, man must sharpen his intellect and curb his aboriginal urges, especially his aggressiveness...
That self-awareness resides in the brain, the organ about which scientists have the most to learn. To Physiologist Charles Sherrington, the brain's 10 billion nerve cells were like "an enchanted loom" with "millions of flashing shuttles." For some functions, M.I.T. Professor Hans-Lukas Teuber explains, brain cells are pre-programmed with "enormous specificity of configuration, chemistry and connection." Some are sensitive only to vertical lines, others only to horizontal or oblique ones. "Each of these little creatures does his thing," Teuber says...
...Physiologist Delgado has developed even more dramatic methods of aggression control in animals. In one famous experiment, he implanted electrodes in the brain of a bull bred for fierceness. Then, with only a small radio transmitter as protection, he entered the ring with the bull and stopped the angry animal in mid-charge by sending signals into what he believes was its violence-inhibiting center. Similarly, Neuroanatomist Carmine Clemente of U.C.L.A. has shocked cats into dropping rats they were about to kill. But neither man sees any early prospects for remote control of human aggression...
Writing in Circulation, Physiologist Alexander R. Lind of St. Louis University School of Medicine notes that while isometrics may increase the strength of one or more muscle groups, they do little or nothing to improve breathing efficiency or the workings of the heart. Tensing the muscles invariably raises blood pressure, Lind says, and the rise may be dramatic if the muscles are strained to half their maximum tension. He points out that the size of the muscles involved is of little importance: a 30% contraction of the small forearm muscles in a hand grip will have the same effect...