Word: braine
(lookup in dictionary)
(lookup stats)
Dates: during 1960-1969
Sort By: most recent first
(reverse)
...Thomas' chest in 31 min. His second, for Recipient James B. Cobb, took 42 min. Cooley's third transplant, which took about 30 min., raised a legal question. The heart came from Clarence Nicks, 32, who died after being beaten in a barroom brawl. Nicks showed no brain-wave activity and had had no reflexes for hours before his doctors shut off the machine that had been oxygenating the blood in his lungs. There was, therefore, no question that Nicks was legally dead. But since he had been involved in what could become a prosecution for homicide...
...been developing his brain for a million years or more, but only in the past seven years has research into its workings assumed significant dimensions. Last week in Manhattan, 70 of the world's leading experts on brain processes met at a New York Academy of Medicine symposium sponsored jointly by the Manfred Sakel Institute* and the Foundation for Research on the Nervous System. In sum, what the researchers had to say was that when brains work, the reaction is chemical -and complex...
Study in man is vastly complicated by the fact that the human brain contains an estimated 10 billion nerve cells called neurons, and another 100 billion of a second type called glial cells. The fluid bath in which they are suspended is an important element in their electrochemical interactions. Moreover, said Sweden's Dr. Holger Hydén, one big neuron may have on its surface as many as 10,000 points of contact (synaptic knobs) with other neurons (see chart). But by means of exquisitely delicate instrumentation and an electron microscope, Dr. Hydén has discovered that...
Pecking Order. The reaction is more readily observable in animals, Hydén reported. When a normally lefthanded rat was forced to learn to use his right paw to get food out of a tube, cells in the most highly developed part of the brain (the cortex) produced a special kind of RNA as well as proteins. A similar thing happened in goldfish that were forced to learn a new kind of swimming by having buoyant plastic foam stuck under their chins by Dr. Victor Shashoua of M.I.T. Fish that Dr. Shashoua made work just as hard swimming against...
...Samuel Bogoch of Boston's Foundation for Research on the Nervous System taught pigeons to peck a particular button to get a kernel of corn from a machine. He found that the chemical brain reaction was not only the creation of new brain protein, but protein-sugar combinations (mucoids) as well. Until three years ago, said Dr. Bogoch, only 20% of the brain's proteins had been identified. This has now been raised to 60%, and those known are divided into 16 groups. Two of these groups show a marked, though brief, increase when a pigeon learns...