A． Right B． Wrong C． Not mentionedCheour’s finding is w……
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Easy Learning Students should
be jealous. Not only do babies get to doze their days away, but they’ve also
mastered the fine art of learning in their sleep. By the time
babies are a year old they can recognise a lot of sounds and even simple words.
Marie Cheour at the University of Turku in Finland suspected that they might
progress this fast because they learn language while they sleep as well as when
they are awake. To test the theory, Cheour and her colleagues
studied 45 newborn babies in the first few days of their lives. They exposed all
the infants to an hour of Finnish vowel sounds -- one that sounds like "oo",
another like "ee" and a third boundary vowel peculiar to Finnish and similar
languages that sounds like something in between. EEG recordings of the infants
brains before and after the session showed that the newborns could not
distinguish the sounds. Fifteen of the babies then went back
with their mothers, while the rest were split into two sleep-study groups. One
group was exposed throughout their night-time sleeping hours to the same three
vowels, while the others listened to other, easier-to-distinguish vowel
sounds. When tested in the morning, and again in the evening,
the babies who’d heard the tricky boundary vowel all night showed brainwave
activity indicating that they could now recognise this new sound. They could
identify the sound even when its pitch was changed, while none of the other
babies could pick up the boundary vowel at all. Cheour doesn’t
know how babies accomplish this night-time learning, but she suspects that the
special ability might indicate that unlike adults, babies don’t "turn off" their
cerebral cortex while they sleep. The skill probably fades in the course of the
first year of life, she adds -- so forget the idea that you can pick up tricky
French vowels as an adult just by slipping a language tape under your pillow.
But while it may not help grown-ups, Cheour is hoping to use the sleeping hours
to give remedial help to babies who are genetically at risk of language
disorders.
