Word: hypothalamus
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Dates: during 1990-1999
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...collaborator, such patients are windows into the brain. Their seizures, strokes and diseases, while damaging the hippocampus, leave core consciousness unimpaired. That's because it evolved much earlier than extended consciousness, Damasio says, and thus is dependent on more ancient structures, especially those located within the brain stem and hypothalamus. Among the most important: a large region called the cingulate cortex, which not only receives sensory input from the skin, muscles and internal organs but also sends out signals to initiate movement and focus attention, as when emotions send our blood pressure soaring or make our hair stand...
...does the drug work? Wessells believes it acts on the brain, specifically the hypothalamus, to set off arousal centers there. "It will start an erection whether you want it or not," he says. "The men in these trials weren't being stimulated erotically...
...grafts genetically-engineered nerve cells into the hypothalamus of their brains; the cells assemble themselves into circuitry that generates opposite-sex attraction, and soon these site-sex attraction, and soon these young men are happily dating women, their homosexuality a thing of the past...
...ever does become fact, I'll have to take part of the blame. For it was my research, published in 1991, which suggested that brain structure--particularly the size of a tiny cell group in the hypothalamus, where our sexual urges may have their roots--has a lot to do with why a person is straight, gay, or bisexual...
...orientation is far too deeply ingrained to be changed by any means. The history of misguided and futile attempts to make gay people straight seemed to attest to that. But recently, researchers have had remarkable success in changing the behavior of laboratory animals by grafting nerve cells into their hypothalamus: animals that were bred to have an abnormally short, 20-hour sleep/wake cycle by grafting brain cells from other animals into them...