Scientists say they have solved the mystery of why mothers tend to cradle newborn babies on the left.
This
position activates the right hemisphere of the brain, which is involved
in functions that help in communication and bonding, they say.The "positional bias" is not unique to humans, with their advanced brains, but is also found in animals, according to researchers in Russia.
Similar behaviour has been seen in baby mammals following their mothers.
They include kangaroos and horses on land and walruses and orcas in the sea.
Dr Yegor Malashichev of Saint Petersburg State University, said the position helped in survival and social bonding.
"If there is no eye contact, or it is wrong, there is no activation of the right hemisphere of the infant... the right hemisphere is responsible for social interactions," he told BBC News.
"All the [11] species we studied demonstrated the lateral bias.
"We suggest that this bias is even more widespread and may be a characteristic of all mammals, with few exceptions. "-read more
No comments:
Post a Comment