Researchers investigating brain size and mental ability say their work offers evidence that education protects the mind from the brain’s physical deterioration.
It is known that the brain shrinks as the body ages, but the effects on mental ability are different from person to person. Interestingly, in a study of elderly men and women, those who had more education actually had more brain shrinkage.
"That may seem like bad news," said study author Dr. Edward Coffey, a professor of psychiatry and of neurology at Henry Ford Health System in Detroit. However, he explained, the finding suggests that education allows people to withstand more brain-tissue loss before their mental functioning begins to break down.
The study, published in the July issue of Neurology, is the first to provide biological evidence to support a concept called the "reserve" hypothesis, according to the researchers. In recent years, investigators have developed th
A. mood
B. high blood pressure
C. alcohol
D. age
| Specific brain disorders can affect the
perception of music in a very specific way. Experiments done on epileptics
decades ago showed that stimulating certain areas of the temporal lobe on both
sides of the brain awakened "musical memories"—vivid re-creations of melodies
that the patients had heard years earlier. Lesions in the temporal lobe can
result in so-called musicogenic epilepsy, an extremely rare form of the disorder
in which seizures are triggered by the sound of music. Autism offers an even
greater puzzle. People with this condition are mentally deficient, yet most are
proficient musicians; some are "musical savants" possessed of extraordinary
talent. The opposite is true of the less than 1 percent of the population who suffer from {{U}}amusia{{/U}}, or tree tone deafness. They literally cannot recognize a melody, let alone tell two of them A. affect the understanding of music in almost every possible way B. stimulate the memorizing of music he/she knew before C. hinder musical understanding of the brain in some special ways D. restrain the memorizing of music he/she knew before 我来回答: 提交
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