The Princess Royal will officially open the world's first brain imaging centre for autism at an Oxford hospital tomorrow.

A special scanner at the £2.3m centre at the university's Department of Psychiatry at the Warneford Hospital, Headington, will help Oxford University researchers study the brains of autistic children and adults, to look at how it functions as they complete tasks.

The technique will highlight how the brains of those with autism disorders differ from other people, and could lead to better treatments.

The Princess Royal will be shown the scanner and other facilities at the Oxford Neurodevelopmental Magnetoencephalography Centre.

While in the city, the Princess will also attend a Citizenship Ceremony at County Hall and join a meeting of the St Helena Diocesan Association at Pusey House.