Dreams appear to help people
remember facts they value better than those they do not, according to a new
study which adds weight to the theory that the sometimes bizarre imagery has a
deeper purpose. The reasons why people dream are still controversial. According
to some experts, they are just random noise as the brain takes a rest. But others
believe they are actually part of the process of filing newly acquired
knowledge and memories and an important way of coping with traumatic events. In
a study, participants were taught Welsh phrases and then tested on how much
they could remember. Those who got a good night’s sleep fared better than those
who learned the words in the morning and were tested later that day. But people
who placed a particular value on the Welsh language got more of a benefit from
sleeping on what they had been taught.
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