Word: alpha
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Dates: during 1970-1979
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...below the DMZ, from the South China Sea to the blue-tinged Annamite mountains of western Quang Tri province, are now manned by ARVN 1st Infantry troops and Marines. In a month or two, G.I.s will be pulled out of the seventh position, an outpost near the coast called Alpha 1, and the U.S. 5th Mechanized Division will leave its headquarters in Quang Tri city. A few Americans will stay on at the DMZ fire bases to tend complex optical and radar equipment. But the South Vietnamese will be substantially defending their own northern border for the first time since...
...Alpha 4, the other base turned over to ARVN last week, is only three miles from the southern edge of the DMZ. Better known as Con Thien-the name that was still lettered on its tactical operations center when the 300-man G.I. garrison pulled out last week-it is a small triangle of dusty hillocks that long ago earned a pivotal niche in the history of the war. In 1967, the North Vietnamese put such relentless pressure on Con Thien and inflicted so many casualties that the American public's confidence in its government's management...
Alone in a semidarkened room, a young woman relaxed in an armchair before a blank screen, three electrodes fixed to her scalp and one grounded to an earlobe. Suddenly a pale blue light flickered on the screen and then steadied; a voice said quietly: "That's alpha...
...voice was that of Neurophysiologist Barbara Brown of the Veterans Administration Hospital in Sepulveda, Calif. She was demonstrating "biofeedback training," a new way of teaching human beings to control the kind of waves their brains emit-in this case, a rhythm called alpha, which usually accompanies a mood of relaxed alertness...
...patterns, recorded by the EEG as tracings on ribbons of paper, come in four main wave lengths: delta (.5 to 3 cycles per sec.), occurring in sleep; theta (4 to 7 per sec.), linked to creativity; beta (13 to 30 per sec.), identified with mental concentration; and the relaxed alpha (8 to 12 per sec.). It was only in 1929 that German Psychiatrist Hans Berger discovered alpha waves and not until 1958 that experimenters began working with alpha training. A tone or light activated by the EEG tells a trainee when he is producing alpha. Asked to keep the feedback...