Many people have a fascination for dreams because of their strange mix of the normal and the weird. People often wake up having had a 17
dream but just a few seconds later find it 18
to remember anything about the dream. This tendency to forget a dream’s content so quickly presents scientists with difficulty when trying to study dreams. One 19
to the problem has been to invite volunteers to sleep in a laboratory where the scientists wake them up at intervals and 20
question them about their dream.
There seems to be some 21
that technology may have an effect on dreams. Apparently, many people used to dream in black and white when all television programmes were in black and white. However, with the 22
of colour television, many began dreaming in colour again.