Neurology and neurosurgery

12.1. Which of the following statements is/are true of cerebral palsy?

There has been a decrease in incidence in the last decade.

There is progressive neurological deterioration.

There is spontaneous improvement in motor function in some cases.

Mental retardation is present in more than 95% of cases.

Affected infants may have abnormal tonic neck patterns in the neonatal period.