The technology allows researchers to measure magnetic-field changes around the brain while a baby sits under what looks like a beauty-salon hair dryer.

WSJ: Wise Beyond Their Years: What Babies Really Know

The jury earlier heard how Mrs Esack was stabbed up to 11 times in the neck and chest at her hair and beauty salon in Ashford High Street.

BBC: Ex-policeman Ivan Esack 'was a vile disgusting monster'

Mrs Esack, 33, was stabbed up to 11 times in the neck and chest at her hair and beauty salon in Ashford High Street, the court has been told.

BBC: Ivan Esack

After high school Robert attended hair-dressing school and opened a Boston beauty salon.

FORBES: Sole Survivors

L'Oreal for .beauty, .hair, .makeup, .salon and .skin.

BBC: New internet name objections filed by government panel